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This solar systems return on investment tool uses many parameters like system type and costs to estimate the simple payback period in years. Solar Systems Return on Investment Calculator

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1REQUIRED INPUT

Enter the solar system size (kW) as calculated using the system sizing tool. The system size forms the basis to calculate the solar systems return on investment.

The two solar system types available are: DG Replacement and Electric Bill Reduction. Click the Solar System Type field and select the required type. The solar system’s return on investment depends heavily on the selected system type.

2ASSUMPTIONS

photovoltaic cost Enter the cost of the solar panel system per Watt provided by the system provider excluding MNRE subsidy. For example: Rs 250 per Watt. Unlock the lock icon on top to change default values.

This is an auto-calculated field, and denotes the total cost of solar panel system in Rupees. This is the product of the mentioned solar system cost and the provided system size.

DG replacement systems can avail 0% MNRE subsidy on system size up to 100 kW. EB bill reduction systems can avail 0% MNRE subsidy on system size up to 500 kW. This field is locked.

This is an auto-calculated field, and the solar systems return on investment calculator displays the total effective cost of solar panel system after subtracting the subsidy amount.

This value is the expected daily solar generation (kWh/day/kW). This value varies based on solar radiation data for a particular location. Across India this value varies between 4.5 kWh/day and 6.5 kWh/day for a 1 kW system. Unlock the lock icon on top to change default values.

This is an auto-calculated field and denotes the expected annual solar generation (kWh/year/kW). This value varies based on solar radiation data for a particular location.

Enter the current cost of diesel in Rupees. Remember to add all taxes to get accurate solar systems return on investment. Unlock the lock icon on top to change default values.

Enter the electricity generated (kWh/Liter) from diesel using a DG set. Unlock the lock icon on top to change default values.

Enter the standard applicable corporate tax (in percentage). Unlock the lock icon on top to change default values.

This is the accelerated depreciation rate (in percentage) for the investment in the solar power generation system. The standard rate applicable is 80%. This field is locked

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4RESULTS

This field denotes the solar systems return on investment in number of years. Also, the section below displays a year wise break up of electricity savings and depreciation savings after replacing your current electricity provider with a solar power system.

First Year Savings

Second Year Savings

Third Year Savings

Fourth Year Savings

Fifth Year Savings

(ROI-5) Years Savings

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Solar system return on investment tool assesses business viability by calculating return on the cost of solar panel power generation system.