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Solar Panel Calculator | Solar Cost Calculator

Solar ROI Calculator

0.0 kW Required System Size
₹ 0
Gross Project Cost
₹ 0
Estimated Subsidy*
₹ 0
Net Investment (After Subsidy)
₹ 0 / Yr
Estimated Annual Savings
0.0 Yrs Estimated Payback Period

*Subsidy estimates are based on the Central Govt. PM Surya Ghar Yojana. Commercial projects are not eligible.

Frequently Asked Questions (FAQs)

How accurate is this Solar ROI Calculator?

The calculator generates an **estimate** based on your inputs (such as your monthly bill and state), average regional data, and current central government subsidies. The true cost, savings, and return on investment may differ depending on your unique roof structure, shadow analysis, final vendor quotations, and future increase in electricity prices.

What assumptions does the calculator use for my location?

In order to calculate system output, the calculator employs pre-set data for the state or UT you have selected. These include the average cost per kW, the normal power tariff per unit, and the average daily peak **sun-hours**.

Why did the calculator round up my required system size (e.g., from 4.3 kW to 4.5 kW)?

Standard increments of 0.5 kW or 1 kW are frequently used for the installation of solar systems. To make sure the system produces enough power to cover 100% of your current electricity use, the calculator rounds the theoretical demand **up to the closest feasible size**.

What is the 'Gross Project Cost'?

The **entire up-front cost** of the solar system before any government incentives or subsidies are applied is known as the Gross Project Cost. This covers the price of the panels, inverter, mounting framework, installation, and commissioning.

How is the 'Estimated Subsidy' calculated?

The Central Government's **PM Surya Ghar: Muft Bijli Yojana** rules are used to compute the subsidy for residential users, which is limited to ₹78,000 for a 3 kW system. This residential system is typically **not available** to commercial users.

What is the 'Net Investment'?

Your real out-of-pocket cost is the Net Investment. It is computed by **subtracting the estimated subsidy from the gross project cost**. Your Payback Period is calculated using this sum.

What is the 'Estimated Annual Savings'?

In a year, this is the estimated total amount of electricity you will no longer need to buy from the grid. It is computed by multiplying the projected tariff rate for your state by your estimated yearly consumption.

What is the 'Payback Period'?

The Payback Period, expressed in years, is the amount of time it will take for your total yearly electricity savings to **match your net investment**. After this time, the electricity produced by your solar system is practically free, resulting in pure profit for the remaining years of the system's life (usually 20–25 years).

Does the calculation account for battery storage?

The current computation is predicated on a typical **Grid-Tied (On-Grid)** solar system, which functions in tandem with the utility grid. It excludes the expense and complexity of hybrid/off-grid battery backup systems.

What should I do after getting my estimate?

The following action is to obtain a comprehensive, **on-site assessment and quote** from a local, certified solar installation partner. In addition to providing a final, precise system cost and thorough financial projection, they will confirm roof suitability and shadow analysis.

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