SolarROI
Programmatic Solar ROI & Sizing Database

Calculate Solar Panel Costs & Payback ROI

Find your state and city to calculate installation costs, 30% Federal ITC tax rebates, net metering offsets, and 25-year cumulative financial savings.

Try the Interactive Savings Calculator

Calculations are initialized with average national solar metrics (India national electric rate: ₹7.50/kWh, sun exposure: 4.8 hrs).

ROI Estimator for India (Average)

Adjust System Inputs

Personalize these sliders to match your home's roof shading and electric usage.

3,000
₹1,000/mo₹12,500/mo₹25,000/mo
Roof Shading ConditionsNo Shade
3.5%
0% (Flat)5% (India Avg)8% (High)
Required System
3.5 kW
First Year Savings
35,872
Net System Cost
132,000

After Govt Subsidy (PM Surya Ghar)

Payback Period
3.5 Years

Break-even year timeline

25-Yr Net Savings
1,172,873

Internal Rate: 30.1% IRR

25-Year Cumulative Savings vs Cost

Visual break-even payback projection timeline

Solar Savings (₹)
Net Cost (₹)
359k718k1077k1435kYr 0Yr 5Yr 10Yr 15Yr 20Yr 25Breakeven: 3.5 Yrs

Payback Explanation: The vertical orange circle denotes the intersection where cumulative utility bill savings exceed the upfront solar panel purchase cost. Beyond 3.5 years, the system has fully paid for itself, and all energy offset represents direct financial earnings.

Government Subsidies

Under the PM Surya Ghar Yojana scheme, residential solar installations qualify for substantial central subsidies (up to ₹78,000 for systems ≥ 3 kW), directly reducing upfront setup costs.

Utility Inflation Protection

Electric utility prices have increased by an average of 3-4% annually. Generating your own clean power shields you from utility rate hikes over the next 25+ years.

Environmental Impact

A typical 3 kW solar system reduces carbon emissions by over 60 metric tons of CO2. Powering your home with clean energy contributes to a sustainable, carbon-neutral future.

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Browse Solar ROI by State

Select a state below to view localized utility pricing statistics, regional incentives, and city sub-directories.

Gujarat

GJ
Electricity Cost7.10/kWh
Sun Exposure5.6 hrs/day
Payback Estimate~3 years
Net MeteringGrade A+
4 indexed citiesExplore ROI

Maharashtra

MH
Electricity Cost9.50/kWh
Sun Exposure5.2 hrs/day
Payback Estimate~2.4 years
Net MeteringGrade B+
4 indexed citiesExplore ROI

Uttar Pradesh

UP
Electricity Cost7.50/kWh
Sun Exposure5.0 hrs/day
Payback Estimate~3.2 years
Net MeteringGrade B
4 indexed citiesExplore ROI

Delhi

DL
Electricity Cost8.00/kWh
Sun Exposure4.8 hrs/day
Payback Estimate~3.1 years
Net MeteringGrade A
3 indexed citiesExplore ROI

Karnataka

KA
Electricity Cost8.20/kWh
Sun Exposure5.3 hrs/day
Payback Estimate~2.7 years
Net MeteringGrade B+
4 indexed citiesExplore ROI

Rajasthan

RJ
Electricity Cost7.65/kWh
Sun Exposure5.8 hrs/day
Payback Estimate~2.7 years
Net MeteringGrade B-
4 indexed citiesExplore ROI

Telangana

TG
Electricity Cost8.50/kWh
Sun Exposure5.4 hrs/day
Payback Estimate~2.6 years
Net MeteringGrade A-
3 indexed citiesExplore ROI

Tamil Nadu

TN
Electricity Cost8.15/kWh
Sun Exposure5.5 hrs/day
Payback Estimate~2.7 years
Net MeteringGrade B
4 indexed citiesExplore ROI

Andhra Pradesh

AP
Electricity Cost7.95/kWh
Sun Exposure5.6 hrs/day
Payback Estimate~2.7 years
Net MeteringGrade B
4 indexed citiesExplore ROI

West Bengal

WB
Electricity Cost8.60/kWh
Sun Exposure4.8 hrs/day
Payback Estimate~2.9 years
Net MeteringGrade C+
4 indexed citiesExplore ROI

Madhya Pradesh

MP
Electricity Cost7.45/kWh
Sun Exposure5.4 hrs/day
Payback Estimate~3 years
Net MeteringGrade B+
4 indexed citiesExplore ROI

Kerala

KL
Electricity Cost8.10/kWh
Sun Exposure4.9 hrs/day
Payback Estimate~3 years
Net MeteringGrade A-
4 indexed citiesExplore ROI

Punjab

PB
Electricity Cost7.30/kWh
Sun Exposure5.1 hrs/day
Payback Estimate~3.2 years
Net MeteringGrade B
4 indexed citiesExplore ROI

Haryana

HR
Electricity Cost7.15/kWh
Sun Exposure5.0 hrs/day
Payback Estimate~3.3 years
Net MeteringGrade A-
4 indexed citiesExplore ROI

Bihar

BR
Electricity Cost7.60/kWh
Sun Exposure5.0 hrs/day
Payback Estimate~3.1 years
Net MeteringGrade C+
4 indexed citiesExplore ROI

Odisha

OD
Electricity Cost6.80/kWh
Sun Exposure5.3 hrs/day
Payback Estimate~3.3 years
Net MeteringGrade B
4 indexed citiesExplore ROI

Jharkhand

JH
Electricity Cost6.65/kWh
Sun Exposure5.2 hrs/day
Payback Estimate~3.5 years
Net MeteringGrade B-
4 indexed citiesExplore ROI

Chhattisgarh

CG
Electricity Cost6.90/kWh
Sun Exposure5.3 hrs/day
Payback Estimate~3.3 years
Net MeteringGrade B
3 indexed citiesExplore ROI

Assam

AS
Electricity Cost8.05/kWh
Sun Exposure4.5 hrs/day
Payback Estimate~3.3 years
Net MeteringGrade B-
3 indexed citiesExplore ROI

Uttarakhand

UK
Electricity Cost6.50/kWh
Sun Exposure4.9 hrs/day
Payback Estimate~3.7 years
Net MeteringGrade B
3 indexed citiesExplore ROI

Himachal Pradesh

HP
Electricity Cost5.50/kWh
Sun Exposure5.1 hrs/day
Payback Estimate~4.3 years
Net MeteringGrade A
3 indexed citiesExplore ROI

Jammu and Kashmir

JK
Electricity Cost4.80/kWh
Sun Exposure5.0 hrs/day
Payback Estimate~5 years
Net MeteringGrade B
3 indexed citiesExplore ROI

Goa

GA
Electricity Cost6.80/kWh
Sun Exposure5.4 hrs/day
Payback Estimate~3.3 years
Net MeteringGrade A+
3 indexed citiesExplore ROI

Tripura

TR
Electricity Cost6.10/kWh
Sun Exposure4.8 hrs/day
Payback Estimate~4.1 years
Net MeteringGrade B
2 indexed citiesExplore ROI

Meghalaya

ML
Electricity Cost5.90/kWh
Sun Exposure4.5 hrs/day
Payback Estimate~4.5 years
Net MeteringGrade C
2 indexed citiesExplore ROI

Manipur

MN
Electricity Cost6.20/kWh
Sun Exposure4.7 hrs/day
Payback Estimate~4.1 years
Net MeteringGrade C
2 indexed citiesExplore ROI

Nagaland

NL
Electricity Cost6.50/kWh
Sun Exposure4.6 hrs/day
Payback Estimate~4 years
Net MeteringGrade C
2 indexed citiesExplore ROI

Mizoram

MZ
Electricity Cost6.00/kWh
Sun Exposure4.8 hrs/day
Payback Estimate~4.1 years
Net MeteringGrade C
2 indexed citiesExplore ROI

Arunachal Pradesh

AR
Electricity Cost5.70/kWh
Sun Exposure4.6 hrs/day
Payback Estimate~4.6 years
Net MeteringGrade B
2 indexed citiesExplore ROI

Sikkim

SK
Electricity Cost5.20/kWh
Sun Exposure4.6 hrs/day
Payback Estimate~5 years
Net MeteringGrade B
2 indexed citiesExplore ROI

Puducherry

PY
Electricity Cost6.40/kWh
Sun Exposure5.5 hrs/day
Payback Estimate~3.4 years
Net MeteringGrade A
2 indexed citiesExplore ROI

Chandigarh

CH
Electricity Cost6.20/kWh
Sun Exposure5.3 hrs/day
Payback Estimate~3.6 years
Net MeteringGrade A+
1 indexed cityExplore ROI

Rooftop Solar Guides & Subsidies

Read our latest expert guides on installation processes, government grants, panel specs, and safety standards.

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Accurate ROI Modeling Approach

All calculations in our programmatic database account for regional grid metrics, federal tax policies, system inefficiencies (e.g., standard 78% inverter performance), and historical solar data. We update local metrics regularly to provide the most reliable solar projections possible.