Published: 22 Aug, 2025 | By Solar
If you’re living in India and are tired of paying high electricity bills every month… you must have had a thought of switching to solar power by now. Obviously, it's cheaper, long term and sometimes even earns you money.
But here’s the thing, solar systems require money upfront and that’s what makes people only being able to think about them and rarely ever actually getting it done.
But for that, our Indian government comes ahead as a saviour, with a subsidy for rooftop solar panels, making solar much more affordable for homeowners. And if you don't know how much money you can actually save, the easiest way to find out is by using a solar subsidy calculator.
So, in this article, we’ll explain in simple terms:
A solar rooftop subsidy calculator is a simple online calculator that tells you two simple things:
All you need to do is enter your details, such as:
Once entered, the calculator gives you estimates on:
It’s one of the most useful tools available today for families trying to understand how solar panels can fit into their home budget. If you’re just beginning to explore solar, using the best solar subsidy calculator online is the right place to start.
In India, the government runs a subsidy scheme under the PM Surya Ghar: Muft Bijli Yojana, which provides financial support for residential solar panel system.
Here’s how the solar rooftop subsidy is calculated:
| System Capacity | Subsidy Amount |
|---|---|
| Up to 2 kW | ₹30,000/kW |
| For additional capacity up to 3 kW | ₹18,000/kW |
| Above 3 kW | ₹78,000 (fixed, no extra for higher size) |
So, if you install a 3 kW rooftop solar system, your subsidy would be:
2 x ₹30,000 (first 2 kW) + ₹18,000 (third kW) = ₹78,000
This amount is directly adjusted from the installation cost if you go through an approved vendor and follow the correct process.
While the central government provides a fixed subsidy across India under the PM Surya Ghar Muft Bijli Yojana, the total benefit you get can vary depending on your state. Many state governments add their own subsidies or schemes on top of the central amount.
For example, in Rajasthan, the state government offers an extra ₹17,000 for rooftop solar systems, along with a free 1.1 kW installation for eligible households consuming over 150 units/month. In other states, the additional amount, eligibility rules, and application process may be different, so it’s always best to check your state renewable energy department’s website or the official PM Surya Ghar portal before applying
This is the biggest question most people ask: “How much can I save with solar panels in India?”
Let’s look at a typical example.
If your monthly electricity bill is around ₹3,000, and you install a 3 kW solar panel system, here’s what happens:
And with the solar rooftop subsidy in place, your cost of installation also drops. That means your break-even point (the time it takes to recover your money) comes faster, usually in 3 to 5 years.
If your usage is even higher, or if you live in an area with long sunshine hours, your savings will be even more.
There was a time when people from smaller areas thought that the solar systems were a thing that was only possible in big cities.
Even families from cities like Indore, Surat, Gaya, Nagpur, Jabalpur, and others are now installing rooftop solar to tackle the problem of growing electricity bills and frequent power outages and this has been possible only because of the availability of government subsidy system and qualified local vendors like Spectra Solar Power, the best solar panel company in India.
By choosing a reliable vendor, you get access to:
You don’t need to know all the technical stuff to be able to know what to do, just have a clear electricity bill, some rooftop space, and access to a good local installer.
When using a solar rooftop subsidy calculator, it’s important to understand what factors affect the final numbers:
Location definitely affects what amount of power your panels generate, because location is the factor that affects how much sunlight your panels get. For example, any area in Rajasthan would get more sunlight than somewhere in Assam.
A bigger system means a higher upfront cost—but it also generates more electricity and gets a bigger subsidy (up to the 3 kW limit).
The more you spend currently, the more you’ll save after switching to solar. If you pay more than ₹2,000 per month, solar starts making strong financial sense.
Using the calculator helps you get a clear idea of what portion of the cost will be covered. The newer policies have made the subsidy amount standard and easy to understand.
Choosing a trusted solar panel business ensures your system is safe, is gonna follow all the MNRE norms, and will definitely be eligible for subsidy and also will guide you through every step so you don’t have to figure it out on your own.
If you're searching for the best solar subsidy calculator online, look for these features:
Most calculators will show:
Just spend 2 minutes entering the details—you’ll be surprised how much clarity it brings.
Here’s why 2025 is one of the best times to shift to solar:
If you’re planning to install solar at home, start by understanding your real savings. Don’t rely on guesses or confusing quotes.
Use a solar rooftop subsidy calculator today, because it takes just a few minutes to know how much you’ll save, and what your final cost will be after subsidy.
So the conclusion is that getting a solar system is not just something rich people can do, that’s no longer the case. There are so many good online tools that do not need any skills to start with, give it just the basic info and you are good to go.
And once you get there and make your decision with the right setup, your rooftop can power your entire home for 25 years or more.
If you're looking for a dependable company that offers on-grid solar solutions and can guide you from start to finish, companies like Spectra Solar Power have helped thousands of families already, maybe it’s your turn next.
