Solar finance calculator
Estimate the monthly repayment, the total cost of credit and the year-one tax relief on a financed system — and see whether it pays for itself from month one. Indicative only; we'll model your real numbers in a quote.
Your estimate
How the estimate works
The monthly repayment uses a standard amortised loan calculation from the system cost, term and indicative rate. The year-one relief assumes the system is owned (hire purchase, equipment loan or cash) so the full cost is claimed under the Annual Investment Allowance at your corporation-tax rate — on a finance or operating lease the relief works differently. "Cash-flow positive" means the monthly energy saving exceeds the monthly repayment. These figures are indicative; your real rate depends on your covenant, and your saving depends on your tariff and consumption. Ask us for a modelled quote and we'll replace every assumption with your numbers.