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Solar ROI Scenario Calculator

Test how editable CAPEX, energy-yield, tariff, OPEX and discount-rate assumptions affect a 25-year scenario. The result is not a forecast, quote or investment recommendation.

Project Inputs

The displayed defaults are example inputs only. Replace them with the buyer's own evidence before using the scenario.

Enter your own total project CAPEX basis. This is not a JUSTSOLAR module quote.

Replace the preset with a site-specific PVGIS, PVWatts or engineering-model output.

Your avoided electricity rate or PPA price

Advanced Settings

Modeled scenario metrics

3.7y
Modeled payback
27.0%
Modeled IRR
$166k
Modeled 25yr NPV
$386k
Modeled net cash

Assumption-based summary

CAPEX (initial investment)$70,000
Year 1 Generation135,000 kWh
Year 1 Revenue$20,250
Annual OPEX$1,050
25-Year Total Generation3218 MWh
Avg Annual ROI22.1%

Separate the scenario from the commercial review

This output is not a return forecast, engineering model, module price, stock statement, financing offer or delivery commitment. Send buyer type, country, product, quantity and destination port for Frank / Director review. Final price and payment terms are confirmed only in the formal offer and PI.

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Save your inputs and results for reference. A commercial offer requires Director review.

We email your results once and use your address for this request.

Method limit: Results depend entirely on the inputs and omit site-specific engineering, tax, curtailment, permitting, grid, financing and contractual risks. Verify the model independently before making design, procurement, financing or investment decisions.