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How Many Solar Panels Are Needed to Power a House?

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As every home has a different energy requirement, it is important to know how much kilowatt is required to address your home energy needs before finalising the number of solar panels you will need. Whether you want your rooftop solar system to meet 100% or some proportion of your home’s electricity demand, the decision will require you to define your objective of going solar first. Most people generally switch to solar to reduce their electricity bills while lowering their carbon footprint. 

To understand how many solar panels are needed to power your house, you need to analyse your average annual energy requirements, your current electricity usage in watts, and peak Sun hours in your region. Also, the efficiency and physical size of the solar panels you are considering can influence your home’s total count of solar panels in the rooftop solar system. 

Determine How Many Solar Panels Are Needed to Run a House

To calculate how many solar panels are needed to run your house you need to know the energy requirements of your house. This calculation involves three key factors. It’s true that the easiest way could be to ask a reputed solar company in India to perform a complete solar inspection and walk you through all the aspects of upgrading to solar so that you can make an informed decision. However, you can still do the math yourself by obtaining enough information. The basic formula is to divide the total solar system size by the production ratio and then by individual panel wattage.

You need to consider three main factors to get a near-accurate estimate of how much kilowatt is required for your home’s electricity demand:

  • Annual electricity usage
  • Solar panel wattage
  • Production ratios

Annual Electricity Usage

The first step to assessing how many solar panels are needed to power your house will require you to check the current electricity usage for a year. This information, measured in kilowatt-hours (kWh), can be easily found in your monthly electricity bills. Your annual electricity usage should factor in all areas of electricity consumption, such as all types of small and large appliances, lights, ACs, geysers, laptops, TVs and any motors. For the explanatory purpose, we will assume a household with an average electricity consumption of 6,000 kWh annually.

Solar Panel Wattage

All solar panels look and function alike, but they are not created to generate equal amounts of power. That’s why you must find out the home solar panels’ wattage before making a decision. The panel wattage represents each panel’s electricity production capacity. The standard range for solar panels wattage is between 250 to 400 watts. Depending on your energy requirements and budget, you can pick above or below the average panel wattage of 300 watts.

Production Ratios

The production ratio of a solar panel system is the correlation of its estimated energy output (in kWh measured over time) to its actual size (in W). This might appear to be a 1:1 ratio as it’s easy to believe that a system will always perform and generate power to its total capacity. However, fluctuations arise depending on the amount of Sunshine falling on your home. As a result, the ratio varies.

For instance, a 10kW system that generates 16kWh of electricity annually will have a production ratio of 1.6. The regions with long days and ample Sunshine will see a better production ratio than those with much rainfall and fewer hours of Sunshine.

The Formula for Finding How Many Solar Panels are Required for Home

Now that you have the required information handy, put the figures in the following mathematical formula to determine how many kWs are required to power your household. 

Number of panels = system size/production ratio/panel wattage

Now, if we put the figures we have estimated so far, the number of panels can be calculated as 6,000 kWh / 1.6 / 300 W. This equates to 10 to 15 solar panels that are enough to power a medium-sized home. So, now you can put your house’s unique values to determine how much kw is required for your house. 

A Different Way of Finding Estimated Solar Use

If you don’t prefer this approach to finding how many solar panels you need to fulfil your electricity demand, a simpler way would be to evaluate your monthly utility bills. They tell you how much energy you are consuming. Now multiply the energy usage figure by the total number of strong sunlight hours your intended solar installation location receives. Divide the figure thus obtained by the wattage of the panels you are planning to buy.

Factors Affecting How Much Kilowatt Required for Home

Although the above calculations will give you a near-accurate estimate of how much kW is required for your house in India, there might still be more to think about. Here are some of the factors that can influence the number of solar panels for your intended location.

System Efficiency

Even the most efficient solar panels can’t do the job of absorbing Sunshine and generating energy at their top capacity levels at all times of the year. Many weather conditions hinder the working of solar panels. On days when sunshine hours are reduced due to rainfall, a cloudy sky, or winter, these are the days when you’ll need a few additional panels to be able to generate just enough energy your home needs. Hence, experienced solar panel installers are likely to add an additional 25% more over the standard number of solar panels needed in your rooftop solar system.

Hours of Sunlight

Clearly, solar panels require an uninterrupted supply of Sunshine to generate ample amounts of energy. Hence, you must determine the amount of Sunshine you get every day. If sunshine hours are less in your region due to weather or geographical conditions, you’ll need more panels to increase the amount of Sunshine captured in a day by your solar panels.

The Wattage of Your Panels

As discussed earlier, the wattage of solar panels varies from 250 to 400 watts per panel. If you choose to install lower wattage panels, you would need a higher number of panels to generate ample power to meet your home’s energy requirement. Of course, this depends on whether you are aiming for 100% conversion of your energy usage to solar energy. However, if you only hope for a partial conversion, then you wouldn’t mind settling for fewer panels of low wattage.

Cost

After the question of how many solar panels are needed to run a house, you would certainly be concerned to learn about the prices. Before you decide what solar panels to pick, it’s important to evaluate your budget and how much you are willing to spend on your home solar systems.

Does Solar System Type Affect How Much Solar Panels I Need for my Home?

Rooftop solar panel systems are available in three different options: on-grid, off-grid and hybrid systems.

On-grid solar systems are the type of solar power framework that is tied to the grid and can transfer solar electricity to the government. The only key components making up this type of system are solar panels and the solar inverter. A grid-tied network is the simplest and most budget-friendly type of home solar system as you don’t have to buy any additional solar panels.

On the other hand, off-grid or stand-alone solar system owners are required to go for a lot more solar panels. This is because the type of solar system is responsible for generating enough electricity to meet day-to-day demands and charging solar batteries, which is an important component in this type of solar system.

A hybrid solar system is connected to the grid and has solar batteries to keep your home powered during an outage. For this system, the solar developer will recommend adding the maximum number of solar panels to meet your electricity requirements.

FAQs

Will I continue to get an electricity bill after switching to solar?

Once you have added solar panels to your rooftop and enjoy green solar energy, the generation of a monthly electricity bill will continue as long as you are connected to the grid. However, you can expect a reduced/zero or even a positive solar credit balance if your electricity exports to the grid exceed any electricity imports for the month. 

Is it possible to increase the solar system size after installation?

It’s always possible for homeowners to add more solar panels and increase the size of their home solar system if the current system size falls short of their home electricity requirements. This will help them further reduce the cost of electricity and unveil the great solar benefits for your home.

What is solar panel efficiency?

The efficiency rating of different solar panels represents the amount of Sunshine that solar panels absorb and turn into usable electricity. A higher efficiency rating means you’ll need fewer solar panels to generate ample energy with fewer panels. For example, the 15% efficiency rating of solar panels means that 15% of Sunshine that hits the solar panels will be used to generate electricity.

Are solar panels costly?

In a rooftop solar system, solar panels are the most costly component that holds the highest share of the overall upfront cost of home solar systems in India. However, the cost of solar panels can vary depending on the energy efficiency rating of solar panels.

I need a 24 hours electricity supply. How much kW is required for my house?

Solar production is intermittent for the simple fact that the Sun doesn’t shine around the clock. As a result, solar electricity isn’t available at night. Luckily, the problem can be easily resolved by adding solar batteries that can consistently maintain enough reserve of solar energy for later use. 

Are solar panels worth it?

Given the current environmental crises, solar is certainly the only way forward. However, the individual decision to adopt solar will depend on your electricity prices, daily energy usage and your desire to choose an environmentally-friendly energy source. Considering all these factors in combination with your home’s geographic location can show you how favourable solar panel installation will be for you.

How long does it take for solar panels to pay for themselves?

Despite the high upfront solar investment, modern solar panels, in most cases, have a commendable pay-off of 6 to 8 years while reducing the cost of electricity for your home for the rest of the 25 years of lifespan of solar panels.

How much do solar panels weight?

Depending on how many solar panels are needed to power a house, installing solar panels will add additional weight to the roof. There are several options for homeowners to design a unique mounting structure for their panels creatively. Hence, it is important that you ensure the integrity of the roof so that it can bear the burden of solar panels for the next 25+ years.

Do solar panels require a lot of maintenance?

Maintaining solar panels is much easier as the structure doesn’t have any moving parts, which eliminates the chances of any functioning failure. In addition, with the right panel cleaning routine, you can maintain the efficient functioning of solar panels and prolong their life.

Is my roof suitable for solar panel installation? 

Depending on how many solar panels are needed to run your house, you will need ample space free of any shade cast by neighbouring trees or buildings to install solar panels. Shade hinders the solar panel’s ability to absorb Sunshine and efficiently lowers energy output. Even a small shaded area on one panel can bring down the efficiency of all the interconnected panels.

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All About Off-Grid Solar System Price, Benefits, Working and more

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Households depend on many home appliances for a comfortable lifestyle. However, each one of these appliances puts a significant burden on the monthly electricity expenses, not to mention the serious environmental harms of using conventional energy sources. At the same time, we put up with the disadvantages of using grid electricity, like unreliable power supply, unpredictable outages, and high annual energy costs.

Consider switching to renewable energy sources like solar. Off-grid solar systems, in particular, are a great energy source because of their high efficiency. Solar energy proves to be the most sustainable and reliable energy that offers a series of economic benefits while catering to your heavy loads.

Let’s understand what an off-grid solar system is and how adopting solar will translate into savings for the next 25 years for you.

What is an Off-Grid Solar System?

Also known as the stand-alone PV system, off-grid solar systems for homes are a remarkable alternative energy source to use in remote locations. As this type of system doesn’t depend on the utility grid, it enables homeowners to become power independent in areas where accessing the grid electricity is costly or impractical. As the grid is not a part of the structure, batteries become a critical component in the working of off-grid solar systems.

The modern off-grid systems are robust and manufactured to survive inclement weather. Your solar installation company will ensure to provide you with a tailored system design tailored to suit the style of your home and can give and maintain a reserve of ample energy output to power your home throughout the day, at night, and even on other days when energy generation falls below the required standard.

Read About: 5kW Solar System Price in India

Components of an Off-Grid Solar System

An off-grid solar power system is composed of four key components – solar panels, a solar inverter, batteries, and the equipment needed for the balancing of the system.

  • Solar panels and mounting

Solar panels are a major and most obvious component in a solar system. A solar panel is made up of solar cells, which can be recognised as small squares. Determining the size and number of solar panels required is a serious consideration in designing a perfect off-grid solar system for your home. When you have the right number and size of panels, they are configured in series strings, and multiple strings are connected to form a substantial solar array.

  • Charge Controller

This device is responsible for controlling the energy flow between solar panels and batteries, facilitating the optimum performance of the latter. It allows for proper charging of the batteries while protecting them against overcharging. 

  • Solar inverter

Using a battery-based inverter is the industry standard in putting together a functional off-grid solar power system. Picking the right size of the inverter depends on the load required by your off-grid system. A battery-based system not only converts the direct current (DC) electricity from solar panels into alternating current (AC) electricity but facilitates the AC to DC conversion for battery charging.

  • Batteries

In a stand-alone solar system, having a reliable battery bank is indispensable. It is the second most expensive component in an off-grid structure after solar panels. Moreover, you may need several batteries if your electricity consumption needs are higher. There are a few types of batteries available on the market, and an experienced solar installer will be able to guide you towards selecting the right option.

The Working of an Off-Grid Solar System 

Off-grid solar systems are self-sufficient solar structures working independently of the grid. They consist of all the key components, which are solar panels plus mounting structure, batteries, an inverter, and other supportive equipment, all functioning in one single unit to ensure optimal power generation.

Stand-alone solar systems can ensure power is available for critical loads while allowing you to achieve absolute grid independence. Let’s understand how off-grid solar systems work in four simple steps:

  1. Your roof-mounted solar panels act as a power hub where the critical process of energy generation takes place. Solar panels absorb maximum sunshine during the day and convert it into direct current energy.
  2. Then comes the role of the solar charge controller-cum-solar inverter that is wired with solar panels. As the DC power passes through the inverter, the controller regulates its voltage. It also monitors and measures the total energy production of the solar array while ensuring that the solar panels harvest maximum energy.
  3. When there is surplus availability of this controlled DC power after meeting the load requirement, the excess energy gets stored in the batteries, which are connected to the charge controller. 
  4. Now this stored energy is used later on when solar power generation is below the required level. The inverter automatically draws power from the battery bank to run appliances as needed at night and during inclement weather.

Is an Off-Grid Solar System a Sound Investment?

Considering that solar is a huge financial investment that will impact your life for a long time (over 25 years), it’s wise to evaluate the viability of an off-grid solar power system. And for most homeowners, solar panels turn out to be an advantageous investment. With solar energy, you reduce your monthly energy bills, increase home value, enjoy better energy security, and feel amazing about doing your bit for the environment by cutting down on your carbon footprints.

Amongst all these benefits, another key factor is to determine what the sound return on investment (ROI) is on an off-grid system for your unique situation. Below is a method of figuring out approximate ROI for your system.

  1. Determine the price of an off-grid solar system for your home.
  2. Divide this price by your current cost of per-watt electricity.
  3. Divide the figure by the hours of electricity consumed in a year.
  4. This final number will decide how many years it will take to break even on your initial solar investment. If you further divide the number by the solar system’s average lifespan, i.e., 25 years, you will get an approximate total number of times the system will pay for itself during the expected performance life.

If this sounds challenging, you can partner with an experienced solar installer to guide you. They will not only provide a more accurate ROI estimation but also guide you at every step of your solar journey.

Benefits of the Off-Grid Solar System

The biggest perk of getting an off-grid solar system is that installation is possible virtually anywhere. You set yourself free of common electricity problems homeowners face. You do away with unexpected and prolonged power outages as well as high electricity bills.

  • Absolute energy independence

Power outages are the most inconvenient. Unavailability of electricity can sometimes last for hours or even days, depending on the cause of the power cut and the time required to restore the supply. Inclement weather, such as sleet and storms, lightning bolts, and heavy downpour can damage grid-related utility lines and equipment. Such damages can mean loss of electricity across several localities. 

The working of off-grid solar systems is independent of the government grid. It makes your home self-sufficient in producing and storing electricity. Your home will still have power when the entire locality is in darkness due to hours of power cuts. The battery bank in your stand-alone solar system will always maintain enough surplus electricity to power your home when the sun isn’t visible.

  • Reduced electricity cost

There is no denying that solar energy is highly cost-effective in the long run, promising significant return on investment and savings. As finite resources remain the primary energy source and are depleting, sooner or later, it’s going to be inevitable to switch to green energy sources due to the cost and negative impact on the environment.

The initial cost of getting an off-grid solar system is relatively high as the buyer is required to pay for more components like batteries and several panels. However, you can rest easy knowing that solar has a great payback period. Through savings, you can expect your solar panels to pay for themselves in 6-8 years, depending on energy output, the method of financing your solar, etc. Moreover, your system promises over 25 years of cheap electricity, with no monthly electricity bills.

  • Suitable for any location

There are still many areas that don’t have access to the local grid. Thankfully, with an off-grid system, you don’t have to depend on DISCOM companies to power your home. The system is the best choice for homes in rural or remote locations, which either can’t access the government grid or suffer from intermittent and prolonged outages. Regardless of where you are, if the sun shines on you, solar can be immensely beneficial for you.

Read About: 1kW Solar System Price in India with Subsidy

How Much Do Off-Grid Solar Systems Cost in India?

Off-grid systems cost the highest among all three types of solar system setup. Several factors like energy usage patterns are important in determining the right solar system size and costs. Hence, only an experienced installer can help you know for sure after an on-site assessment.

Regardless of the off-grid solar system prices in India, these systems are worth the price if you are looking to achieve absolute energy independence in a remote location. 

Facts About Off-Grid Solar Systems for Home

If you are considering a cost-effective, eco-friendly way to power your home, switching to an off-grid solar power system could be a smart choice. 

When you are investing in solar equipment that is practically going to stay with you for a lifetime, you would want to know the key facts to make the right choices for your home and family. If you partner with an experienced solar installer in Delhi, they will be able to guide you at every step of your solar transition journey. The main thing to focus on is getting the right system for your situation.

  • How much does an off-grid solar system cost? Apparently, a dime! It costs the highest amongst all types of solar systems since they require batteries. However, don’t let the initial investment scare you. Instead, learn all about the benefits that outweigh the cost.
  • Unlike an on-grid system, you go for a much higher capacity model when investing in off-grid solar. Your stand-alone system must be able to generate enough energy to power your home but also maintain ample surplus for storage to use during zero energy production hours.
  • The extra energy that your system produces during the daytime is not sent to the government grid but is stored in batteries to be accessed during rainy or cloudy days, at night, and in the winter weather.

Subsidy on Off-Grid Solar System

There’s no subsidy applicable to purchasing an off-grid solar system for your home. You can only avail government subsidies if you are purchasing a grid-connected solar plant.

The government of India is pushing residential rooftop solar installations by offering subsidies on the solar system’s benchmark cost. A 40% subsidy is available on a solar unit of 1 kW to 3 kW capacity, whereas the subsidy is 20% for units of higher capacity (up to 10 kW).

However, it is important to learn about what all types of solar systems are and which systems are eligible for government subsidy. The three types of solar power systems in India are:

Although you would want to select your solar system that best meets your home’s electricity needs, the solar subsidy is also a major consideration for individuals planning to buy solar. So far, the subsidies are available on grid-connected units and hybrid solar systems (the cost of batteries will not be included in calculating the system’s total cost).

As per the latest updates from MNRE, there is no provision for subsidies for off-grid or stand-alone solar systems.

FAQs About Off-Grid Systems

Do solar inverters work at night?

No. The solar inverter’s job is to convert DC energy coming from solar panels into AC energy. When solar panels are not capable of generating electricity due to weak solar radiation, the inverter in your off-grid solar system turns off during this period.

Does the power outage affect the off-grid solar system?

Not at all. An off-grid solar structure isn’t connected to the government grid. So any power failure related to the grid will not influence the working of your inverter or any part of your off-grid solar system for your home.

Which solar system is suitable for me: on-grid or off-grid?

There are both advantages and disadvantages to using on-grid and off-grid solar power systems, and making the best choice varies from one home to another. You might think an on-grid system is suitable for your home until you recall all those days when outages disrupted your routine. Or you might lean towards off-grid as you would rather choose to disconnect from the grid. If you are not convinced about either of them, you can customise a hybrid solar system to work specifically for your situation.

How do I determine if my home gets enough sunlight for solar panels to work?

Off-grid solar systems for homes require an uninterrupted supply of sunlight to generate enough power for your daily needs. However, it does not mean high temperatures during peak summer days. Solar panels absorb sunlight (not heat) to create energy and, thus, work more efficiently in clear skies. Your solar installer is likely to be familiar with standard calculations to help you with the sizing of the solar system and estimating ROI and savings.

What is the main difference between living off-grid and on-grid?

If you have a professionally designed and installed solar system, there is little difference in living with either type of solar structure. Both the systems ensure that you have the power needed in your home. In an on-grid system, you depend on the grid for additional electricity, whereas you use electricity stored in the batteries in an off-grid system.

Do I get warranties to cover my off-grid solar power system?

Yes. Most solar companies in India are able to provide 25 years of performance warranty on solar panels. Other components, such as inverters and batteries, are also covered by a limited warranty of 5-10 years, depending on the brand. This means that you are protected against unexpected failures and performance issues if any occur in your system.

Is solar maintenance costly and time-consuming?

No. The modern solar equipment is highly efficient and robust to provide users with years of hassle-free, low-cost solar energy. With routine cleaning of solar panels and period maintenance of all solar components, you can keep your off-grid solar system for home working at its peak efficiency level. Moreover, several installers top your solar system with the convenience and protection of AMC maintenance packages. This ongoing solar service plan ensures that your system’s service needs are always fulfilled on time.

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1kW Solar System Price with Subsidy and Details for Home in India

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Are you planning to upgrade your home to a solar-powered home? Do you think you have a small home and that’s why you cannot have a solar plant installed? If yes, then a 1kW solar system is the ideal choice for you. A 1kW solar system can easily power a 2-3 BHK house wherein you can use one refrigerator, three fans, one TV, one laptop, and 4-5 lights. On average, you can run about 800 W loads on a regular basis. 

The complete solar setup typically includes high-efficiency solar components such as solar panels, solar batteries (off-grid solar plant), solar inverter, mounting structure, and added accessories. After absorbing the sunlight, the solar panels generate DC electricity. It is then converted into AC electricity through a solar inverter to power the appliances in your home. To effectively run your entire home load, you will need both solar power and a solar battery or connection to a grid. 

As a homeowner, investing in 1kW solar panels is a great step towards increasing your savings tremendously. If you are wondering how many types of 1KW home solar systems are available in the market today or what the 1kW solar system price is in India, this blog has all the information you need.  

Also Read: 2kW Solar System Price in India with Subsidy

Types of 1kW Home Solar System

To cater to the varying electricity needs of customers, there are three different types of solar systems available in India.

  • On-grid 1kW Solar System (with grid export)
  • Off-grid 1kW Solar System (with Battery Backup)
  • Hybrid 1kW Solar System (Solar Battery Storage with Grid Connection)

On-grid 1kW Solar System

Also known as a grid-tied system, an on-grid solar system allows you to draw electricity from both your solar system and the grid. It consists of only two main components — solar panels and a solar inverter. Since the system does not have a device like a solar battery to store the electricity, it does not provide power backup. The electricity is generated from solar panels and passes through the inverter, where it is converted from DC to AC for household use. 

If electricity generated is more than your consumption, then excess power will be automatically exported to the utility grid. In this way, you can export extra or unconsumed electricity to the grid and gets compensated for it with days when your consumption exceeds generation. On average, a 1kW on-grid solar system produces about 4-6 units per day depending on your location.

on-grid solar system

Here are some key highlights of having on-grid 1 kilowatt solar panels at home:

  • Since this type of solar system requires fewer components, it is on the affordable side — no recurring costs.
  • Electricity is consumed as per the home power requirements.
  • Extra power generated is exported back to the grid. Net metering ensures and keep a record of all units exchanged between you and the grid, which reflects periodically in monthly bills.
  • The utility grid can be used to draw power in case of less energy generation from the solar system and at time when there is no generation, like night.

Also Read: 10 steps to installing solar on your rooftop

Off-grid 1kW Solar System

Also known as a solar system with battery backup, off-grid solar systems are designed for places with no access to grid or when the homeowner wants independence from power outages. This kind of solar system comes with solar batteries and can function effectively independent of the grid connection. The main components include solar PV modules, solar inverter, solar battery (solar battery, normal battery, or lithium ion battery), and the balancing equipment (mounting structure, mc4 connectors, DC wire, DCDB box, and earthing kit). 

With this system, the unconsumed electricity does not go back to the grid. Instead, it gets stored in solar batteries. It is a complete power bank in itself and provides a power backup when your solar panels aren’t producing electricity. On average, a 1kW off-grid solar system generates 4-6 units per day.

off-grid solar system

Here are some key highlights of having off-grid 1 kilowatt solar panels at home:

  • Works without a grid; battery is used as the device to store power, and it acts as a grid in itself
  • When the solar system does not generate electricity due to a lack of sunlight, the system utilises the stored power to run electrical appliances.
  • Ensures reliable power supply 

Also Read: 3kW Solar System Price in India with Subsidy

Hybrid 1kW Solar System

The hybrid solar system combines the functionality and features of both on-grid solar systems and off-grid solar systems. While a hybrid system stays connected with the conventional utility power grid, it also contains a battery backup. This allows the user to not only export power back to the grid once your battery and appliances are fully charged but also draw from the grid in times of excess power demand. This type of solar system is recommended when you want a reliable power backup, do away with unexpected power cuts, and reduce energy bills.

hybrid solar system

Here are some key highlights of having a hybrid solar system at home:

  • Excessive energy can be both stored (in the battery) and exported back (to the grid), resulting in no wastage.
  • With features like battery backup, its demand stays firm in the market. 

1kW Solar System Price List in India

Wondering what the average 1kW solar system price in India is? The standard price for a 1kW solar system can fall anywhere between Rs. 60,000-1,20,000  depending on the type of the system, as well as government-imposed subsidy within that state. Consult an experienced solar contractor to learn about everything, from 1kWsolar system price in India with a subsidy to the best ways to install solar systems on your property.  

While most homeowners in India prefer on-grid systems for their flexibility and high return on investment, there is a fair share of market demand for off-grid systems as well. It all boils down to the customer’s specific needs and budget. 

  • The 1kW solar system prices mentioned above can vary as per location, promotions, brand, and availability.
  • The prices are also exclusive of Govt. Subsidy. The eligibility to avail a subsidy depends on various factors, including the state regulations and the type of solar system.
  • For any questions regarding the solar 1kW price across states, the Homescape team can help you.

 

Also Read: 5kW Solar System Price in India, Subsidy, Benefits & More

1kW Solar System Specification

Components Description
Solar Power System 1kW
Average Electricity Generation 4-6 Units Per Day
1kW Solar System Price Rs. 60,000 to Rs. 1,20,000
Solar Panel Required 3 to 4 solar panels of 330-250-watt
Warranty 25 Years on your Solar Panels
10 Years on Your Product
1kW Solar System Subsidy 40%  Govt. Subsidy on benchmark cost.
Area Required for 1kW Solar System 100 Sq. ft.
AMC Maintenance Yes, with additional cost of AMC Package Purchase.

Benefits of Having a 1kW Solar System Installed at Home

Solar panels are indeed one of the best ways to ensure self-consumption while cutting down heavily on your energy bills. Not to mention the positive impact solar has on the environment. Here are some of the major benefits a homeowner can enjoy with solar. 

  • Accessibility as per Your Needs

With three solar model types to choose from, buyers can enjoy greater convenience and advantages. For example, homeowners who opt for 1kW on-grid solar panels can export the excess power generated through the panels to the government grid. When you don’t draw any electricity from the grid due to sufficient solar power generation by your 1kW solar panels, the utility bill will reflect zero charge. On the other hand, those who want to enjoy independence from government grids and be self-sufficient in producing and storing electricity may go for a hybrid or off-grid system. Off-grid systems even work for locations that do not have access to the local grid!

  • Reliable Source of Electricity

Since you will be generating your own electricity, you will still have power even when the entire town experiences a power cut. Whether you choose an off-grid system with a battery backup or an on-grid system with accessibility to the local grid, there will always be enough surplus electricity to power your home for hours. In addition, today’s photovoltaic solar panels are better-performing in terms of energy output against the sunlight captured. As a result, fewer panels are needed to generate ample solar electricty. 

  • Energy Cost Savings

For most homeowners, the cost of fuels and monthly bills can be quite overwhelming. Solar systems can help you reduce your energy bills by up to 70%. With solar powering your home, you get to save small amounts every month, which results in higher profitability in the long run.

Also Read: 10kW Solar System Price in India with Subsidy

1kW Solar System Installation Cost in India

The overall 1kW solar panel price in India depends on the type and number of 1 kW solar panels you want to purchase and how complex it is to install them. 

In order to efficiently install a 1kW solar panel system in India, you will need about 100 sq. feet of shadow-free roof space. It will help generate 5 kilowatt hours of energy during the day (for 8-10 hours), enough to meet your entire household’s needs. The power generation capacity can be increased by installing more panels and having the required battery backup. While a steady decline in prices has been noticed in the solar industry — thanks to more and more homeowners going solar — PV arrays are still a significant investment that needs to be done wisely. It is better to always consult a trusted solar company before making a final decision. 

Usually, the cost of installation is included within the cost of solar system purchase, so you can just let the solar energy company take care of it. They can not only custom design the solar solution as per your unique needs and conditions, but also ensure that the entire installation process is streamlined properly. A typical solar installation project takes around 1-2 days, and this varies from project to project. They will also ensure that solar panels are set up properly so that they receive maximum sunlight. 

1Kw Solar System Subsidies in India

If you are thinking of buying a 1kW solar system and subsidy is your major consideration, then know that subsidies are offered by the government on grid-connected solar plants and hybrid systems (excluding the cost of battery backup). There’s no subsidy applicable on residential off-grid solar systems.

In order to encourage more solar installation among homeowners, the government of India has introduced many benefitting subsidies and policies. Subsidies can easily reduce the overall cost of owning a 1kW solar system, while the future financial benefits of solar electricity prove to be rewarding in the long term. As per the provision, eligible homeowners can avail 40% subsidy on 1kW to 3kW rooftop solar systems. For on-grid solar systems ranging from 3 kW to 10 kW, the subsidy has been capped at 20%. No subsidies are given for plants of over 10 kW capacity. 

Frequently Asked Questions About 1kw Solar System

What All Appliances Can a 1kW Solar System Power?

1kW on-grid solar panels with no battery system can power your regular home appliances, like washing machine, refrigerator, and lights, fans, chargers. On a battery-based solar off-grid system, only a limited number of appliances can function for limited hours. 

Who Should Purchase 1kW Solar Panels?

For an average Indian household, a 1KW solar system is enough to power a 2-3 BHK home. Hence, any homeowner looking to upgrade their property with a solar system is eligible. Moreover, the government of India offers subsidies for solar panels of up to 10kW. 

Where Can I Buy 1kW Solar Panels?

Though there are various solar energy companies in India, it is best to buy a system from a trusted dealer. You can purchase a suitable 1kW solar panel from an experienced and trusted solar developer like Homescape. We offer end-to-end solutions, including solar consultation and installation. 

Are 1 kW Systems a Better Option Than 3 kW Systems?

While the performance depends on the energy consumption of your house, a 1kW solar system usually suffices for any average 2-3 BHK household. If you have a 10 square meter area available around your house, then it is sufficient to install a 1KW solar system.

How Much Solar Power Does My Home Need?

To determine your own average electricity consumption, have a quick look at your total energy used for the last twelve months. This understanding can be easily obtained from the utility bills. Divide that number by 12 to have a great estimate of what quantity of solar energy you would need from your home solar system.

How Many Solar Panels Will I Need for 1kW?

Typically, one needs to install 3 to 4 solar panels of 330-250-watt to generate enough electricity for a 1kW solar system. A solar professional can help you decide on the panels based on the watt peak in an array.

What Is the Area Required for 1kW Solar Panel?

Ideally, a sun-facing 100 sq ft open area is required to install a 1kW solar panel system. It should be free from any shadow cast by trees or surrounding buildings. Talk to your solar contractor for the best advice. 

How Many Units Are Generated by 1kW Solar Panels?

On an average sunny day in India, an efficient 1kW solar panel system can generate about 4-5 units of electricity, which is equivalent to 1,400-1,500 KWh of annual power generation. The daily energy production can vary based on weather conditions.

Will My 1kW Solar Panels Be Covered under Warranties?

Yes. In India, most solar manufacturers provide 25 years of performance warranty on their solar panels. Their components are covered under warranty as well, though for a limited period of 5-10 years, depending on the brand. Make sure to compare your options in this regard before opting for a solar solution. 

How Do I Know My Roof Is Ideal for Solar Installation?

A 1kW solar panel can be easily installed on any type and size of the roof, as long as there are more than two rooms. The only concerning factor should be the strength of the structure and if it can bear the weight of the solar plant. A proper assessment by a solar professional can determine the eligibility of your home for solar installation. 

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Take a Step Towards a Better Future with Home Solar

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The government of India is promoting solar power as a cornerstone source of energy in the renewable energy mix on a massive scale. Favourable policies, solar subsidies and tax benefits (accelerated depreciation) have amplified the advantages of solar for domestic solar manufacturers, solar panel installers and end consumers of solar. Let’s dive deeper into each aspect and discover how solar is a great investment. 

Long-term Benefits for You and the Environment

The answer to whether or not solar is the right decision for you can be found in the long-term advantages of solar. And in all these cases, it seems “Going solar” is indeed a smart way forward. Solar electricity is good for the environment primarily because solar power generation doesn’t emit very high carbon emissions, thus helps fight climate change and our dependence on non-renewable energy sources, like coal. 

Most solar installation companies in Gurgaon, Delhi and other parts of India offer higher efficiency solar systems that help homeowners produce power for themselves and make them energy independent and take less or no energy from the local grid. As a result, you reduce  or eliminate your energy cost and maximise savings in the long run, especially considering the government subsidies for home solar. Another great advantage with solar PV systems is that they are easy to maintain and come with manufacturer’s warranties, thus becoming a great value addition for homes.

United Steps Towards a Better Future

From the time India committed to take stronger climate change mitigation measures under the Paris Agreement, the government has introduced several tools and policies to encourage the quicker adoption of solar. The endeavour is to create a clean energy future where the citizens can reap numerous environmental and economic benefits of solar systems.

The Union Budget 2022-23’s announcements objectively factor in the emerging requirements of India’s renewable energy sector and aim to help it become more self-reliant and competitive. By further increasing funding in the Production Linked Incentive (PLI) program, the government intends to enable domestic solar manufacturing through fully-integrated units. This will end India’s reliance on solar imports and can even make India a key solar exporter. 

The imposition of Basic Customs Duty from April 1st, 2022, is going to be another gamechanger in the country’s efforts to strengthen domestic solar manufacturing. Though, in the short term it will make solar a bit expensive, but when domestic solar manufacturing hits economies of scale, it will be beneficial in the long run. By levying a high import duty of 40% on solar modules and 25% on solar cells, the domestic solar industry will be safeguarded against the cost competition from the solar imports and have a supportive ecosystem to grow. It’s expected that the cumulative effect of these efforts will also bring down the cost of solar systems for the end-users in India in the long run.

Adopting rooftop solar for homes is easier and more accessible with the simplified rooftop solar scheme by MNRE. Homeowners will now have the freedom to select solar equipment and to have solar power companies of their choice do the installation. Also, applying for solar subsidies is much simpler with the new online process upon which the consumer directly receives the subsidy payout in 30 days in his/ her account.

You can do your part in building a green future for India by installing your own home solar power plant in Gurgaon or anywhere in India. HomeScape by Amplus Solar is a solar installation company serving in Delhi, Gurgaon and several regions of India and is committed to helping homeowners make a smooth and highly beneficial solar transition. Our award-winning innovative residential rooftop solar designs not only saves you money but also adds beauty to your home. 

Contact us to empower your home with its power-generating system today. 

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How to Plan Solar Panel Installation for your Home

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Getting  rooftop solar system for your home is a smart investment to get practically free power for the system’s complete lifecycle of  more than 25 years. However, there are several steps to ensuring a successful solar installation, and it starts with obtaining a broad overview of how this green energy system will work for you. 

An initial site visit and technical assessment by an experienced solar company will be done where your annual electricity consumption will be assessed and location suitable for installing solar panels will be analysed for any shade. The technician will also help you consider solar system capacity, its estimated cost, and the possibility of net metering. You will also learn about the projected solar energy generation and the savings or return on investment you can expect after getting home solar plant.. 

The energy generation of your home solar panels largely depends on how the solar panels are installed on your rooftop.

Here is a step-by-step guide to getting solar panel installation done right.

Location of the Solar Panel (Roof or Ground)

When it comes to onsite solar installations, rooftop solar is preferred for a flat roof as installing solar is fast, easy, and convenient. Another unheard advantage of a solar structure designed for a rooftop is that the solar arrays keep your building cool in the summer by providing a physical cover against scorching heat. Solar panels can also work efficiently on slanted roofs. The decision depends on whether your roof’s size and strength is suitable to accommodate the installation. Also, check if your roof is free of shade from nearby trees and structures. 

You can consider ground-mount installation for your solar panels if your roof can’t accommodate solar and you have ample space for the installation. However, to ensure the suitability of your ground location, check if the area is:

  • Free from obstructions and shadows cast by nearby trees and structures.
  • Flat as steep terrain can lead to costly installation.
  • Dry with good drainage to prevent standing water.

A residential solar system is usually installed inside the property. However, solar panel installations can also be done at distant locations for a group of consumers and they can in turn draw power as per their usage, this concept popular in the west is known as community solar. Parking lots are ideal for ground mount solar plants, which upgrade them into solar energy-generating assets and keep the vehicles protected in warmer months.

The Right Direction for Solar Panel

For countries in the northern hemisphere, like India, true south-facing solar panel placement is recommended to get direct sunlight during the day. It is important to understand that the true or geographic south (direction towards the South Pole) is different from the magnetic south shown by a compass. 

The most optimum direction also depends on how you are installing the solar panels. A home solar panel system, for example, will be more effective if the panels have a slight rotation towards the west, away from true south. The motive for this orientation is to allow rooftop solar panels to produce more electricity in the evening when people are home using the most appliances. This might decrease the total solar energy production but will ensure solar electricity availability when needed the most.

Finding the Right Tilt and Angle

The modern solar panels allow you to adjust the angle and tilt of panels to maximise exposure to direct sunlight and boost sunlight collection efficiency. However, finding the right adjustment setting depends on the geographical latitude. Generally, you can strike an optimal annual solar energy production by setting the solar panel tilt angle the same as the geographical latitude and towards the equator. 

For solar panels located closer to the equator, the panels will be facing upwards. The angle can also negatively affect the production of solar power for your home in an unfavourable climate or environment. Soiling from dust and dirt can happen more frequently on low-tilt solar panels, lowering their ability to collect sunlight.

If you are tired of paying high electricity bills, switching to solar for your home will benefit you immensely. However, getting the most out of your solar power plant in Gurgaon or anywhere in India depends on selecting the right solar options, and a trustworthy and experienced solar installation company makes it all easier for you. 

With HomeScape by Amplus Solar, we go above and beyond to help you make switching to solar a rewarding experience. Our renewable energy solutions for home equip your property with high-efficiency solar panels and easy-to-maintain systems. We make a long-term commitment with our customers and accommodate their service and maintenance needs through a lifetime performance warranty of 25 years and comprehensive AMC packages

Contact us to schedule your site visit and get a solar quote.

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Can you run a house completely on Solar Power?

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An answer to the question, whether you can run a house completely on solar power is yes! Especially in a country like India where we receive abundant sunshine throughout the year, it is convenient and beneficial to have residential solar systems.

Going completely solar you can reap good benefits but there can also be some potential drawbacks which are inadvertently attached to it. The best part about generating electricity through solar power is that it is completely free! The initial investment involves setting up the solar system can be a bit high depending upon your requirement. Solar power is quite efficient and is also free of pollution. But you must also consider the chances of foul weather that might cause a problem to your plans.

TYPES OF SOLAR SYSTEM:

There are two types of solar systems namely off-grid solar system and on-grid solar systems.

Off-grid solar systems:

Off-grid solar systems are the ones that work independently off the grid and have batteries which can store the solar power generated by the system. The system consists of batteries, solar panels, grid box, charge controller, mounting structures, and balance of the system. But there is always a chance of an extended bad weather condition might cause problems for your electricity supply.

On-grid solar system:

In On-grid solar system, if your system produces more power than is required, then the surplus can be fed back into the main electrical grid with the help of solar net metering and you can get credited for the same. Similarly, you can also use the traditional grid provided power during the situations when your system is not producing enough power.

UNDERSTANDING THE INFRASTRUCTURE:

While planning to run your house completely on the solar power, you need to also understand the financial and mental investment required. The infrastructure and working of a solar system are slightly complicated and hence the calculations involved should be precise. With the help of careful routing of a home’s plumbing, you can get hot water heated by the sun and since it is pumped through the house, the heat dissipated can be used to control the temperature of the house. The heat generated in this manner would also not add up to the home’s electric consumption. Although it might be a challenge to execute, in the year 2007, a successful experiment had shown how to heat and cool the house using a solar radiant heat system!

THINGS TO KEEP IN MIND:

Before finalizing to go completely solar, the first point to be considered is whether your house gets enough sunlight throughout the year to produce enough electricity. If your requirement is to run an 800-watt load for your home or less than 800-watt then 1kW solar panel is perfect for you. The solar panel installation requires 100 square feet of shade free roof space and to run the load, the first priority would be given to the solar system and second priority would be the grid or batteries. 1kW solar panel price in India for home depends upon the type of solar system.

The different types of 1kW solar systems include:

1. On-Grid Solar System:

Also known as grid-tied system as it connects with the grid electricity system. The solar system with 1kW capacity produces 4-6 units per day on an average. Solar net-metering is installed which reads how much electricity you are using and the balance which can be exported to the grid. All the adjustments are made in your upcoming bills by the government.

2. Off-Grid Solar System:

Off-grid solar system or stand-alone power system is also known as a solar battery-based system. This system has a battery as a backup which helps you store the solar power which can be used during power cuts when the sunlight is not available.

3. Hybrid Solar System:

Hybrid solar system is designed to have the functions of both the off-grid solar system and on-grid solar system. Basically, a hybrid solar system has three sources to run its load – solar energy, battery storage, and grid electricity. The best part about a hybrid solar system is that it stays connected with the government electricity grid and has batteries as a backup. It is most suitable for people living in areas that witness more power cuts, due to frequent rainfalls. The approximate cost of 1kW solar panel with battery storage in India ranges anywhere between Rs.80,000 to Rs. 1,50,000, including installation. While calculating the price also check whether you are eligible for the government subsidy ranging from 10% to 40%.

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Personal Guide to install solar at home: Part 5- Rooftop Solar Panel Installation, Warranty and Maintenance

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In the previous parts of our blog series, we discussed about receiving your solar proposal, documentation and the types of permits. Here is the final part of a five-part ‘Personal Guide to Installing Solar at Home’ series. This article will be covering the installation process, as well as the warranties and maintenance.

Step 9: Installation

Once you’re done with confirming the proposal , site visits, permit work and planning, the actual rooftop solar panel installation will only take a few days of work. If you are installing an on-grid system with net metering, the process will take additional time. While the decision process for rooftop solar panel installation can take a while, the installation time frame is quick and simple. The actual day when your rooftop solar panel installation starts will be exciting.

1) Set-Up

The solar installer you chose will start by preparing your roof and ensuring the shingles or tiles are attached correctly. They will set up a temporary structure used to support the work crew and materials to help in the process. It helps to take care of safety during the whole rooftop solar panel installation process.

2) Solar Panel Mounts

Then, the installer will set up the solar panel mounting system. It will support the base of the solar modules. It’s the only piece of equipment which is attached to your roof. The entire mounting arrangement must have a tilt and have an angle between eighteen to thirty-six degrees to have most sunlight exposure.

3) Solar Panel Installation

After the installer sets up the mounts, the solar module itself has to be installed on the mounting structure. They should make sure to tighten up all the bolts and nuts so that it stays firm and steady. The panels are mounted on the racking when they are firmly connected to the racking.

solar panel installation

4) Wiring

Then, they put in electrical wiring that will connect to your electrical panel and the general power system. MC4 connectors are predominantly used as wiring for solar modules. During the wiring installation, the company must ensure that the electricity supply from the grid to home is turned off .

5) Solar Inverter

Once the electrical wiring is done, the installer should link the solar inverter to the system. The inverter(s) are connected to the modules to convert direct current (DC) into alternating current (AC) energy which is used in households and on the grid. The solar inverter may be used indoors or outdoors and is normally placed near the main system.
Inverters stored in a spot that is not too hot are often more efficient. If kept outside, the inverter should be kept out from the afternoon sun. If installed indoors, the garage or utility room is typically the most reliable location as they remain cool for most of the year with ventilation.

6) Solar Battery

If you opt for an off-grid solar system, a battery is necessary since it is used to store backup power ,which is connected with the solar inverter.

7) Grid Connection

To link the inverter to the grid, the installer will have to simply plug it in the main power switchboard, so that it receives power from the grid. The output wire should also be connected with a board that is supplying electricity at home. To determine the excess energy generated from the solar system, the installer needs to install a metering device.
The installation time will range from 1 to 3 days, subject to the size of the system you are installing. Net-metering can add time to your installation process . If your installer needs to add a power meter for net-metering, it might add a few hours to your solar installation.

8) Consumer Unit

The inverter should be linked to the consumer unit (known as the distribution or fuse board) to generate electricity. To observe the amount of electricity the solar modules generate, a generation meter should also be connected . To evaluate your solar systems’ performance, you can check on the HomeScapes’ remote monitoring app.
For instance, you can check the electricity generation data and decide the appropriate time for using your dryer or other utilities. It will also show the import and export of the power happening due to the net-meter.

Step 10: Warranty and Maintenance

Warranty

The final step with significant aspect is the warranty of the solar power system. Warranties for solar panels protect your solar investment and are an integral part of any rooftop solar panel installation. There are two kinds of warranties that keep your modules covered, and knowing the differences between them is vital to make sure you get the most suitable agreement for your solar energy system.
The two types of warranties are:

  1. Product (or materials) warranty
  2. The performance warranty

A product warranty of solar modules covers the panel itself and guards you against obstacles like manufacturing defects, environmental issues and unanticipated wear & tear. A material warranty will typically guarantee 10 to 12 years without the modules failing.
The performance warranty will ensure 90% production at ten years and 80% at twenty-five years. As with most guarantees, more the period, the more it is advantageous to you. The solar inverters come with a 5 year warranty which can be increased by AMC (Annual Maintenance Contract).
Warranties, are a very confusing topic for some solar owners. However, there is nothing to worry as HomeScape provides hassle-free warranty management. We have AMC packages which cover up to the lifetime of the product. You can buy it to safeguard your whole solar system. We present the best-in-class warranty on all parts. In case of failures, you can contact us without having to run to the manufacturer.

Maintenance

As opposed to many other technologies generating power, solar photovoltaic systems have low maintenance and service requirements. However, proper upkeep of a solar plant is necessary to optimize energy yield and maximize the life of the system. Some of the maintenance activities include module cleaning once in 15 days (dust, bird dropping, and other debris can cause a decrease in power generation).

Maintenance activities

The other items to take care of include::
  • Checking module connection integrity
  • Checking junction/string combiner boxes
  • Inspecting mechanical integrity of mounting structures
  • Vegetation control
  • Tightening cable connections that have loosened
  • Replacing blown fuses
  • Repairing equipment damaged during module cleaning or intruders.

Maintenance activities

Homescape Remote Monitoring System:

At HomeScape, we have designed an RMS (Remote Monitoring System) called HomeScape Solar, which is IoT based, to keep a record of the performance of your solar plant. The application can be found in Android and iOS.
It helps with the following functions:

  • Notification alarm– If the plant, inverter or any component is not working properly, the HomeScape Solar app sends you a notification.
  • Various plant parameters – Solar energy generation, solar energy consumption, units fed back to the grid, savings and contribution to the environment can be viewed.
  • Plant performance– The performance of the solar system can be seen at different time scales: daily, monthly, annually or between any pair of dates.
  • String monitoring– You will be able to take a look at all the parts of the system with the help of our app.

In essence, we highlighted how the solar system installation takes place starting from setting up, installing the mounts, solar panels, wiring, inverters, batteries, connection to the grid and consumer unit. We have also discussed about the significance of solar warranties and upkeep. Many of the solar companies, including HomeScape, offer a warranty on solar panels as long as 25 years.
With this article, we conclude our ‘Personal Guide to Installing Solar at Home’ series. It is now time for you to switch to the most eco-friendly option by installing solar systems for rooftops for power generation and use!
Save your money and help the world as well. Be prepared for a world which will soon switch to solar power!

Read about previous parts of the five-part series here:
Part 1- https://homescape.solar/personal-guide-to-install-solar-at-home-part-1-system-type/
Part 2- https://homescape.solar/personal-guide-to-install-solar-at-home-part-2-system-type-and-budgeting/
Part 3- https://homescape.solar/personal-guide-to-install-solar-at-home-part-3-choosing-the-solar-installation-company-and-site-survey/
Part 4- https://homescape.solar/personal-guide-to-install-solar-at-home-part-4-proposal-and-documentation/

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Personal Guide to Install Solar at Home: Part 1 – System Type

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Buying and installing a rooftop solar system needs a lot of planning and preparation. And, if you hire a solar contractor or licensed installer to do the job for you, your informed participation would guarantee that quality panels are installed at a fair price, with the correct device size being selected and positioned in an ideal orientation.

To help you with understanding your rooftop solar installation process in detail, we are launching a blog post series. The series guides you through the site assessment, the energy audit, the design process, the sizing of the device, the deployment, and other phases involved. This blog post is the first of our five-part series – ‘Personal Guide to Install Solar at Home.’

Step 1: Evaluate your Options

Here are some of the factors you will have to consider before you install a rooftop solar system:

1)   Location

The geography of your location and the weather will decide how much sunlight you can get all year round. It would affect the number of solar panels you need. For instance, if you live in a location where trees, tall buildings, or other major barriers are present, the photovoltaic system may not receive enough daylight. The solar panels with battery for home need adequate sunlight every day to provide enough kilowatt-hours and easily meet your residential electricity requirements.

2)   Rooftop Condition

If you have a deteriorated roof, the structural foundation of the solar system will be bad. You will not be able to mount photovoltaic panels until you first fix those issues. Repairing the roof is always an easy solution, which shouldn’t cost you a lot.

3)   Type of Solar Panel

Choose which type of panel you would be interested in mounting:

  • Monocrystalline
  • Polycrystalline
  • Thin-film
  • Bifacial
  • PERC

Each type has its unique strengths and drawbacks. Based on the factors particular to your site and preferred system features, the solar panel model ideally fit for your installation would vary. The most common solar panels used today in solar roof installations are monocrystalline solar modules. Among homeowners looking to install solar panels on a budget, polycrystalline panels are economical.

Thin-film panels are futuristic and may be applied by an adhesive directly to a surface (roof, boat, or RV). With traditional solar panel systems now competitively priced, a bifacial system offers higher performance and can take up less room. In awnings or pergolas, bifacial solar panels fit well. If the suitable roof space is small, a solar array capable of the power you need can be made a reality by using PERC solar panels.

4)   Tilt Angle

The tilt angle is a crucial factor to consider. It is the angle between the horizontal ground and the solar panel. The tilt angle of the solar module can be adjusted as per the latitude of your location. Typically, it is assumed that the panels positioned at a tilt angle equal to the latitude will produce the highest amount of output. You may also use a solar tracker to improve the efficiency of the system.

Listed below are the latitudes of the cities in India:

  • Zone 1: J&K, Punjab, Himachal Pradesh, Uttarakhand: 30-36°
  • Zone 2: Rajasthan, UP, Delhi, Haryana, Bihar, North Eastern States: 24-30°
  • Zone 3: Gujarat, MP, Jharkhand, West Bengal, Maharashtra, Chhattisgarh, Orissa: 18-24°
  • Zone 4: Karnataka, Tamil Nadu, AP, Telangana, Kerala: 12-18°

If all of this feels too complex for you, don’t fret! HomeScape helps you to assess the right configuration for your solar-powered rooftop and takes care of all the steps for you.

Step 2: Energy Audit and Load Calculation

To find out the load that your solar PV system should cover, perform a load analysis. For instance, your fridge, dryer, television, lamps, microwave, and computers may all be up and running at once, so you’ll need a solar system big enough. Take the battery bank into consideration in case you are planning to install an off-grid system, i.e. solar panel with battery for home. This step helps you to determine how many kilowatt-hours the system needs to produce to meet your energy usage per month.

An intense energy audit requires the following steps:

  • Make a list of old appliances and try to replace them with newer, energy-saving ones.
  • Check to see which appliances stay on, or in 24/7 standby in your home while not in operation, and start switching them off.
  • Replace incandescent light bulbs with CFL bulbs, if you’ve not already.
  • Blinds or thick curtains can be used to prevent harsh exterior temperatures from radiating into the building.

The following steps should help you with the calculation process:

1)   Solar System Capacity

How many units of electricity do you consume on an average monthly?

For instance, if you use 1400 kWh per month, let’s say an average of 6 hours of daylight every day, this means that at least every hour you will need 1400/(6 x 30) = 7.7 kW, that is approximately 8-10 kW. If you have an idea about the available space on the roof, you can also try using our Solar Calculator.

The following parameters specify the size of the plant:

  • Monthly average Bill peak load in summers and year-round
  • Estimated Load
  • Area of the rooftop or shade-free space

2)   Area Requirement

1 kW requires 10sqm or 100sqft of shade free area. It can be adjusted and installed with existing structures on roofs such as tanks, storerooms and staircases.

3)   Payback Period

Did you know that a solar system reduces your electricity bills by up to 90 per cent? Depending on the electricity bills, the payback period is around four to five years. The total number of years in which the original sum of money spent on the device can be recovered from the profit is known as a solar system’s payback period.

For instance, if you have spent Rs 5 Lakhs in a solar system that provides you with annual savings of Rs 1 Lakh, this ensures that your initial investment has been paid back within five years.

In conclusion, the installation of a solar system (either on-grid or solar panels with battery for home) is not very difficult, nor is it incredibly costly. In this article, we covered the initial few steps: factors to consider before installing a solar system, load calculation, as well as performing an energy audit. We hope you found the first part of our blog series useful. Follow us to know more in our upcoming parts of the personal guide blog series.

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