Solar EROI Calculator

Savings and ROI, and cost of renewable electricity generation or conservation

Calculator Inputs Calculator Outputs
kW (AC)
per year
% $
% $

Capital investment after subsidies 6,126.50 $
Life cumulative utility MMC 7,510.52 $
Electric energy savings 2,628 kWh/y
Average electricity cost savings 1,232.64 $/year
Crude oil import savings 614.13 $/year
Average return on assets 20.12 %/year
Payback time: min & fixed 8.02 9.35 years
Loan payments: max avg’d & fixed 893.38 785.28 $/year
Average, annual ROI 13.21 %/year
Total generator life ROI 330.2 %
Total net cost savings 23,652.94 $
Compound, annual ROI 5.84 %/year
Normalized cost of system 3.06 $/W (peak)
Normalized cost of system 20.42 $/W (avg)
Averaged output electricity cost 0.223 $/kWh

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Last updated: 28 Feb 2014 * Calculator used 429 times.

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