What must the site deliver to cover its costs?

What the model does

Annual delivered energy = site output × 8,760 × utilisation fraction. Unit contribution = selling price − electricity price ÷ efficiency fraction − other variable cost. Operating cash proxy = energy × unit contribution − fixed costs. Simple payback = capital ÷ positive operating cash proxy. Target utilisation = (fixed costs + capital ÷ target years) ÷ (site output × 8,760 × positive unit contribution).

What to check before using the result

Currency is a label only: no exchange-rate conversion occurs. Utilisation means delivered kWh divided by aggregate site output × 8,760 hours. The model assumes a constant flat energy price and 365 days, excluding demand charges, tax, financing, subsidies, degradation, replacement, rent not entered in fixed costs, discounting and changes over time. Simple payback is not NPV or a forecast.