Solar PV payback
Calculate the simple payback period from net installation cost, self-consumption share, and grid buy/sell rates.
Open calculatorSimple payback period
Simple payback period = upfront outlay ÷ annual cash saving. Ignores the time value of money, inflation and maintenance costs (use the NPV calculator for discounted cashflows).
One-off capital spent upfront.
Net cash saved or earned per year thanks to this outlay.
Payback period (years)
4
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For solar installations with net-billing and self-consumption, use the dedicated “Solar PV payback” calculator.
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Educational estimate only. Not medical, tax, legal or financial advice.