Revenue calculator

Solar park revenue calculator.

Model the electricity generation, gross revenue and operating surplus of a solar park from your own assumptions. Results are modelled estimates, not forecasts of any park's results.

Required inputs

Every result depends on these.

Start from

Choosing a proposed location fills in its PVGIS modelled yield and the 400 kWp design capacity.

Installed capacity kWp

Peak DC capacity. 1 MWp = 1,000 kWp.

Annual energy yield kWh/kWp

Energy per kWp in year 1, after normal system losses.

Electricity sale price EUR/MWh

Assumed average price for energy sold in year 1.

Operating and maintenance costs EUR/year

Year-1 costs you want included. 0 means none.

Annual degradation % per year

Yearly loss of output, applied from year 2.

Projection period years

1 to 25 years.

Optional assumptions

Leave at their defaults to leave them out.

Electricity price escalation % per year

Default 0: the price stays flat.

Operating cost escalation % per year

Default 0: costs stay flat.

Availability after curtailment and outages %

Share of modelled generation actually sold. Default 100. Do not repeat losses already in the yield.

Other annual costs EUR/year

For example land lease or insurance. Default 0.

Download results (CSV)

Formulas

How the results are calculated.

For each year n from 1 to the projection period:

generation(n) = capacity × yield ÷ 1,000 × (1 − degradation)^(n − 1)

sold(n) = generation(n) × availability

price(n) = price × (1 + price escalation)^(n − 1)

gross revenue(n) = sold(n) × price(n)

operating costs(n) = (O&M + other costs) × (1 + cost escalation)^(n − 1)

operating surplus(n) = gross revenue(n) − operating costs(n)

Generation is in MWh, prices in EUR/MWh and money in euros, in nominal terms. Full definitions are on the methodology page.

What the results are not

Gross revenue is not profit. It is the value of electricity sold before any costs.
Operating surplus deducts only the costs entered above. It is not net profit, cash flow or a return, and leaves out financing, tax, depreciation, fees and any cost not entered.
A market price is not a realised price. The Romanian day-ahead reference shows recent wholesale prices, not what any park is paid.
Not a forecast of any SunGrid or partner park.