This document provides a financial analysis of a proposed solar PV rooftop project over 25 years. It outlines key steps and parameters to consider, including net metering rules, installation costs, internal rate of return, return on investment, payback period, lifetime savings, and discount rate. Tables show projected annual energy generation, costs, revenues, and financial metrics to help evaluate the project's feasibility and profitability. The analysis aims to help consumers make informed decisions without being misled by inaccurate information from solar companies or officials.
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Sample Calculations for solar rooftop project in India
1. SOLAR PV ROOFTOP PROJECT FINANCIALANALYSIS
STEPS
✔ FINANCIAL ANALYSIS (NET-METERING/OFF-GRID/UTILITY MODEL)
✔ SOLAR ROOFTOP RULES & REGULATIONS BY AUTHORITIES INVOLVED
✔ INSTALLATION DECISION & CHOOSE INSTALLING AGENCY
✔ IF YES – RENT (NO CAPITAL COST) / INVEST / LOAN
FINANCIAL REPORT
➔ Why financial analysis?
Solar PV rooftop systems are expensive and capital cost involved upfront is also high
enough to scare away many consumers from installing them. On top of that every state in India has
its own Rules & Regulations that make solar power either good or bad to the prospective investor.
There is no rule of thumb for which type of consumer(Residential/Industrial/Commercial) will get
benefits of solar power, every consumers location and consumption demands different set of
parameters in feasibility check. “So financial analysis is must to stay away from confusion.”
➔ How we do it?
There are 101+ parameters that determine financial feasibility of solar rooftop project. We
take all the parameters into consideration while doing related mathematics, it also has well defined
approach created by us. We start off from your current consumption of electricity and paying rate
per unit of electricity to the distribution company. We take latest reference for values based on our
own experience, government documents and other credible sources. These calculations are
thoroughly checked by manual inspection as well as computerized programs specially developed by
us.
➔ Don't get cheated !
Always ask for Net Present Values of all solar calculations, consumers often get fooled by
solar companies and some government officials also to attract customer. We explain this to you in
this report by exact numbers and no guesses. You should check in this report the following results
before investing in solar rooftop project. Contact on info@disruptiveenergy.net for any queries.
✔ Internal Rate of Return(IRR)
✔ Return on Investment(ROI)
✔ Payback Period
✔ Savings over the life of system
✔ Discount Rate
etc.....
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4. ARSS BIO-FUELS PVT LTD, NASHIK
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Accelerated depreciation (WDV) in Rs Dust Effect Loss in % 2.00% Present Cash Inflow in Rs
Accelerated depreciation for 1st year 40.00% Future Payments & Bills Present Cash Outflow in Rs
Accelerated depreciation from 2nd year+ 80.00% Installed System Performance Over Time in kWh Present Cost of O&M in Rs
Actual Size of installation kW 10 Interest Earned on Savings in Rs Present Solar Generation Cash Inflow/Saving in Rs
Annual Interest Rate in % 8.50% Inverter Loss in % 6.00% Present Solar Generation Cash Outflow in Rs
APPC Rs/kWh 4 Inverter price / kW (236000/10kw) Rs/kW 23600 Present Solar Policy Cash Inflow/Saving in Rs
Appr. Price per kW in Rs 90000 Inverter Price decrease rate/year in % 3.00% Present Total Solar Cash Inflow/Saving in Rs
Average radiation kWh/Sqm/Year 2000 Inverter price over the years in Rs Projected Bill Payment in Rs
Bad quality loss in % 3.00% IRR 25.24% Projected Cumulative Bill Payment in Rs
Balance units in kWh Levelised cost of Solar Generation in Rs/kWh 3.89 Projected Tariff Rs/kWh for Future
Bank/Fund Savings Section Life of project in years 25 PV Panel Performance for 1kW system kWh/year
Benchmark cost/kw 80000 Month PV Panel Section
Billed Payment in Rs Net adjustment in Rs Radiation on inclined surface in % 20.00%
Book depreciation as per C.A.(Straight line method) in Rs Net Cash Flow in Rs Reflection loss in % 3.00%
Book depreciation for the 1st year(Half yearly) 2.64% Net income tax benefit in Rs Shadow loss if any in % 3.00%
Book depreciation for the 2nd year+(Annually) 5.28% Net IT benefit/kWh in Rs Simple Payback in years 0.81
Cabling loss in % 2.00% Net Positive Solar Generation Cash Flow in Rs Solar Generation Cash Inflow/Saving in Rs
Calculation for Accelerated depreciation Net Present Cash Flow in Rs Solar Generation Cash Outflow in Rs
Calculation for Asset depreciation benefit Net Present Cumulative Solar Generation Cash Flow in Rs Solar Generation Cost Rs/kWh 5.46
Capacity Required to install kW 57.91 Net Present Positive Solar Generation Cash Flow in Rs Solar Panel Efficiency in % 15.50%
Capital cost after 10% salvation in Rs 810000 Net Present Solar Generation Cash Flow in Rs Solar Policy Cash Inflow/Saving in Rs
Closing Balance for AD in Rs Net Solar Generation Cash Flow in Rs Solar Power Generation /day/kW
Closing Balance for Normal depreciation in Rs O & M increase rate/year in % 5.00% Solar Power Generation Loss/year in kWh
Closing Balance In Savings in Rs O & M over the years in Rs Subsidy % 0.00%
Consumption(kWh) O&M /year in % 1.00% Subsidy Component Year in Rs
Corporate Tax 35.00% Opening Balance For AD in Rs Tariff Increase Rate in % 4.00%
Cumulative AD in Rs Opening Balance for Normal Depreciation in Rs Tax benefits by depreciation in Rs
Cumulative net IT benefit in Rs Optimum Angle for Inclination in Degree Temperature loss in % 15.00%
Cumulative Normal Depreciation in Rs Output per kW capacity in kWh/day 3.95 Total Cash Inflow in Rs
Cumulative present Cash Inflow in Rs Output per kW capacity in kWh/year 1440 Total Cash Outflow in Rs
Days of grid dis-connection/year 52 Panel degradation/year in % 1.00% Total O&M Over the years in Rs
Depreciation benefit with AD in Rs Panel mismatch loss in % 1.00% Total Price of System in Rs 900000
Discount Factor Payback Period in years 5 Total Solar Cash Inflow/Saving in Rs
Discount rate 11.00% Paying Rate in Rs/kWh 13.36
101 STATS IN SOLAR PV ROOFTOP FINANCIAL FEASIBILITY
IMPORTANT:
1. You may want to give your inputs about parameters listed above. You can write directly in the box, the value you want to be considered for analysis.
2. Some values are empty in the stats, and they will remain empty on this page because they are to be evaluated on over the years and is not a single value.
3. If you don't have a idea about some of the values, we will take them by our own previous experiences involved in similar analysis or actual readings.
4. This page DON'T HAVE ALL THE RESULTS, Take advice while taking final decision on investment.
5. ARSS BIO-FUELS PVT LTD, NASHIK
Copyright: Disruptive Energy Solutions N212 www.disruptiveenergy.net
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
-3500000
-3000000
-2500000
-2000000
-1500000
-1000000
-500000
0
Chart:2 Pre-Solar Bill payments Vs Post-Solar Bill Payments Over 25 Years
Year
0 1000000 2000000 3000000 4000000 5000000 6000000 7000000
900000
5906957.2
Chart:4 Total Solar Returns In 25 Years
0 200000 400000 600000 800000 1000000 1200000 1400000 1600000 1800000 2000000
900000
1878740.72
Chart: 5 Net Present Value of Total Solar Returns in 25 Years
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-1000000
-500000
0
500000
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Chart:6 Accumulated Solar Returns Over 25 Years(Payback/Break-Even)
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
-3500000
-3000000
-2500000
-2000000
-1500000
-1000000
-500000
0
500000
1000000
1500000
Chart:1 Balance in Bank Account of Equivalent Deposit
Year
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
-1000000
-800000
-600000
-400000
-200000
0
200000
400000
Chart:3 Net Solar PV Project Returns for 25 Years
Year
6. ARSS BIO-FUELS PVT LTD, NASHIK
Copyright: Disruptive Energy Solutions N212 www.disruptiveenergy.net
PV Capacity you will Install on your roof is 10 kW
Area Required on your roof (Shade Free) 1300
Capital Cost of complete system 900,000.00₹
Deposits in Bank can be used to pay bills for 1 Years
5 Years
Savings Over 25 Years 5,006,957.20₹
Net Present Saving 1,878,740.72₹
25.24%
Return On Investment for 25 Years 334.16%
Net Present ROI 91.80%
Paying for Electricity Now 13.36 Rs/kWh
Solar Power Generation Cost 5.46 Rs/kWh
3.89 Rs/kWh
Subsidy (if applicable) 0.00%
Subsidy Amount 0.00₹
Tax Deduction due to Accelerated Depreciation 283,500.00₹
SUMMARY OF RESULTS
by
True Solar Calculator for India (TSCI)
Sq.Ft.
Payback Period/ Break Even (Time taken by
Savings due solar power to cover upfront system cost)
Internal Rate of Return(IRR) of project (You can compare
This value with your bank/investment interest/return rate)
Levelised Cost of Solar Electricity(LCOSE)