The new term, people are using is “Solar System”. Solar system (सोलर सिस्टम) means, a complete set of solar panels, inverter, battery and balancing of system is called solar system. It is also known as Solar Power System. The benefits of installing solar system in home, hospital, school, factory, office reduce an electricity bill or run appliances after power cut.
Solar System for Home
Energy is the most important aspect of the advancement and development of mankind. Without energy, there will be no innovation, no invention and mankind will have to compromise with the lack of advancement. However, the sources of energy that are traditionally used by mankind, such as coal, petroleum etc. is coming to an end.
That is why; the world needs to switch to the primary source of energy, where the entire animal kingdom or plant kingdom receives energy from, is the Sun. Utilizing solar energy is the best way to fight this problem. There was a time when the solar energy was trapped and used only in the rural areas, where there was a lack of other electricity sources or in the industrial belts, where there is a huge demand of energy. But, now you can easily access the solar system for home.
Whatever the type you choose for powering your home, it is important to check the service provider for right installations and services like end-to-end EPC solutions, operation, and maintenance.
Types of Solar System for Home
Solar Systems can be broadly classified into two categories:
1. Stand-alone Solar Systems
2. Grid-connected Solar Systems
2) Stand-alone Solar Systems "Off-Grid Solar Systems (with Battery)"
At the name implies, a stand-alone solar system is one which is not connected to a power grid. It feeds a load which often in watts or kilowatts directly. It is also known as Off Grid Solar System (ऑफ ग्रिड सोलर सिस्टम). It can be seen in deep rural areas where there are no frequent power cuts. Off-grid systems are designed to operate independently of the grid, these systems sync with batteries. Battery based systems used to be of smaller capacity due to the cost involved, but the rising cost of other power sources and the lack of power at any cost has seen a steady increase in battery-based system sizes
Complete energy independence
Energy necessities won’t get impacted with power outages
Expensive than the on-grid system
2) On Grid Solar Systems (without Battery)
As opposed to stand-alone solar system, the power generated in a grid-connected solar system is fed to the national power grid and becomes part of the power generated by other energy sources. It is also known as On Grid Solar System (ऑन ग्रिड सोलर सिस्टम). These are the common types of solar power system used in homes today. It is designed to work with the grid alone. Thus, it is a combination of solar panels and grid. As these systems depend on the reference voltage provided by the grid for their operations, grid-tied systems do not work when the grid is down.
Self-independency on power and sell access electricity to the state government
5 years payback time and free electricity for the next 20 years
When grid power fails, the solar power system to fails.
What is the difference between Stand-alone and Grid-connected solar system?
A stand-alone solar system generally has an energy storage unit in the form of a battery as a component, while a grid-connected solar system usually does not need one. Apart from being stand-alone or connected to the grid, PV Solar Systems are also described by other characteristics. They can be (i). regulated or unregulated, (ii). supply a DC load, an AC load or both types of loads, (iii). have a battery storage or no storage.
7 Best tips you should know before buying solar system for home
1. Don’t be carried away by advertisements:
Since more and more people are leaning towards acquiring the solar power system for their homes, many companies have come into this business. With loads of advertisements, they try to influence buyers. However, you must not be carried away by these advertisements in excitement. It is always better that you seek for recommendations.
You must ask your friends, family members, neighbours or even colleagues if they have installed the home solar system in their homes. Ask them about the brand or company that they have chosen. There are a few things that you must ask them –
Pre & Post Buying Service & Support
Quality of Installation
Previous Installer's Installation
It is only after you get satisfactory answers to these questions that you should proceed towards choosing that company or brand.
2. Understand the material and choose the best one:
While buying the off-grid solar systems the first thing that you need to be careful about is the type of panel that you are choosing. There are two kinds of panels available in the market –
1. Monocrystalline Solar Panel
These are made up of uniform crystals, made from pure and single silicon crystal bars. Since the panels are uniform, they are more efficient, eliminating the space wastage. These panels can absorb massive amounts of solar energy in strong sunlight. But absorption is reduced when light condition reduces. An efficiency of monocrystalline solar panels is up to 20% and it works in low light and cloudy weather condition.
2. Polycrystalline Solar Panel
These are purified and modules crystal panels. These are less efficient but are less expensive than the mono-crystalline panels. An efficiency of polycrystalline solar panels is up to 17%.
Both of these panels have their unique properties. You must choose the one that fits your needs and budget.
3. Be Realistic about the Budget
The solar system for home in India is not very cheap. But, you must understand that with this one-time investment, you are actually potentially saving huge for the future. Your energy bills are going to be reduced significantly. All that you have to pay for is the minimal maintenance charges that you would have to otherwise pay for the traditional power systems. Hence, to make sure that you don’t have to pay huge on these solar power kits for repairing and maintenance purposes, choose the best quality ones that will last for long.
4. Understand the location and choose the kit
The location or area in which you are going to install the solar power system for home plays a huge role. If you live in an area, where there is uninterrupted strong sunlight most of the time of the year, you can go for the mono-crystalline systems.
If you live in an area where there is a scarcity of direct or strong sunlight, go for the poly-crystalline ones. This will absorb the sun from different directions.
5. Look for Certifications
This is one of the most important tips that you must follow, while you are buying your solar power kit. Look for the certifications that your system has. It applies to all kinds of solar panel systems that you are buying. The certifications indicate the type of testing that has been done on the panels. There are certain types that bring you government rebates. Go for them if you need to save money on the best solar panel for home.
6. Solar inverter
The solar inverter is very crucial for the solar system for the home. It converts the absorbed DC current into usable AC current. The better is the solar inverter; the less will be the waste of the power that is conserved. This will have a direct impact on your savings.
7. Check the Balancing of System
If you want to know how much do solar panels save, you must consider all other factors that are associated with it. One of them is the mounting system. The best mounting systems will ensure that the chance of the solar panels being unmounted during a wild storm is less. If you live in an area that is cyclone prone, this is especially important.
Solar panel stands also known as Mounting Structure, Solar Panel Holding Stands, Panel Stand, and Solar Structure. On the basis of consumers demands, Solar panel stands can be categorized into: – rooftop mounting structure, wall mounted mounting structure, and Tin Shed Mounting Structure.
So, it is now time that you switch to the solar systems for homes for power generation and usage. It is the most eco-friendly choice and the world needs this switch. Save your money and also save the planet. Be prepared for a world that has to switch to solar power in the near future.
How Much Does Solar System for Home Cost?
The cost of a rooftop solar system depends on the function it serves (to feed power into the grid, to support the load during a power failure, etc.) and incentives/subsidies available. It should be noted that all solar PV systems function by matching the voltage from some other source. Therefore the system has to be integrated with the grid or a battery backup.
Price of Solar System for Home
At Loom solar.com, we are regularly asked the cost break-up and particular of rooftop solar power plants. But before answering that, let’s list down the components of a rooftop plant:
Solar Panels that convert sunlight into electricity
Inverters that convert DC electricity to AC form
Cables: DC cables convey current from panels to inverters and AC cables from inverters to loads
Mounting Structures: They support the panels on the rooftops
Electrical Peripherals: These include Junction Boxes, Earthling, Lightning Arrestors, and Conduits etc. All of these are highly specific to the design of the power plant
Lastly, another cost component is the actual supervision, design and installation for the power plant
Loom Solar estimates a rooftop solar power plant to cost between ₹25 – ₹75 per Watt, depending on the quality of components chosen. We have given ballpark numbers for the costs of rooftop power plant components below – and this holds for 2021:
Peripherals (JBs, DC protection systems, earthling, lightning arrestor)
Supervision, design and installation
We have not considered battery backup as that can alter the economics significantly depending on the extent of battery backup required. Not only do batteries add to the initial cost, recurring maintenance, and replacement expenditure, the energy loss on charging and drawing from the battery also adds to the cost of power. A battery backup could add significant costs to the above system.
Subsidies & Incentives
Several incentives are available for rooftop solar PV plants in India. While the specifics of the incentives could vary from state to state, these incentives broadly fall under the following categories:
Capital Subsidy - Governments in India provides capital subsidy in many states for the investment made for rooftop solar power plants. The subsidy on capital investment of solar system is ₹ 20,000 per kW or 30% of system cost whichever is lesser.
Accelerated Depreciation (AD) - Accelerated depreciation of 80% is available until March 2022 under the Income Tax act for rooftop solar PV systems. The depreciation benefit to a maximum of 40% can be claimed every year from April 1st, 2022.
Income Tax Credits - Investment tax credits work similarly to capital subsidies. Here, instead of a direct subsidy on the capital cost, your income tax is deducted by the amount of incentive.
The final cost to set up the solar system for office, factory, after factoring in Accelerated Depreciation and Subsidy benefit will be:
The final cost of 10 kW rooftop solar system - on-grid solar system
Cost of a 10 kW rooftop solar plant (A)
Subsidy @ 20% per kW (B)
Net cost after subsidy
Accelerated depreciation @40%
Tax saved through depreciation (C)
Final Cost to the consumer after benefits (A-B-C)
Variations in Pricing
Prices of solar PV systems offered by various manufacturers can differ significantly. There can be several reasons for the variations in price, such as
Overstatement of capacity
Some manufacturers advertise a rooftop system with 1 KW modules (solar panels) and a 5 kW inverter as a 5 KW system. As the electricity is generated by the modules this system only has a 1 kW capacity and the price offered by the manufactured should be compared with other 1 KW systems and not 5 kW plants
Brands – Products from Tier I manufacturers are typically more expensive but offer much better performance and reliability.
Certifications/Standards – Products that are certified and meet quality standards are more expensive.
Warranties – The price of the system can depend on the warranties offered. Solar Panels – Industry-standard warranty is
10-year manufacturer warranty
25- year performance warranty
Other systems – Inverters, mounting structures, cables, junction boxes, etc. typically come with a 1-year manufacturer warranty which can be extended to 5 years.
Solar System Initial & Annual Costs
The costing of an energy system is usually considered in two parts - an initial cost and an annual operating cost. As is evident by now, a renewable energy system is characterized by a relatively high initial cost and a relatively low annual cost as compared to a conventional fossil fuel based system. On the other hand, an energy system using a conventional energy source is characterized by a low initial cost and a high annual cost. Thus an economic analysis of an energy system has to consider both these aspects.
Off-Grid Solar System Price List, 2021
In India, up to 10 kW solar system is designed to work with batteries, here is the price list of solar energy powered solar system from 1 kW to 10 kW.
Off-grid solar system
Price (all inclusive)
On Grid Solar System for Home Price List, 2021
Indian homes install up to 10 kW solar system while the business and factory install up to 25 kW on-grid solar system. the price list of 1 kW - 25 kW on-grid system is as follows: