Big energy decisions, made clear
ThePowerPayback exists to answer one question honestly: when does a big energy purchase pay for itself? We turn your electricity bill into a clear, sourced plan, for free, starting with rooftop solar in India, the US, and the UK.
Three markets, each on its own rules
Solar economics don't translate across borders, so every market gets its own data, incentives model, and math. Nothing is averaged or hand-waved between countries.
India
PM Surya Ghar subsidy slabs, state top-ups, and DISCOM net metering, for all 36 states & UTs with city-level sun data.
Sources: MNRE · State DISCOMs
United States
Post-2025 rules with no federal credit assumed. Per-state rates, sun, and net-metering policy for 50 states + DC and 32 metros.
Sources: EIA · DSIRE · EPA
United Kingdom
Self-consumption plus Smart Export Guarantee earnings, with 0% VAT already in the price, tuned to all 12 regions.
Sources: Ofgem · HMRC
Who it's for
Homeowners weighing solar
Your bill keeps climbing and you want to know if solar actually pays off for your home, before talking to a single salesperson.
People comparing installer quotes
You have a quote in hand and want an independent sanity-check on the size, cost, and incentives you've been told.
Anyone confused by the rules
Subsidies, net metering, export tariffs, the paperwork: you want it explained once, clearly, for your country.
Why you can trust these numbers
We show our working
Every number traces back to a published assumption and an official source. See the methodology page.
We don't oversell
Our defaults are deliberately conservative, and we never assume an incentive we can't confirm, or one that has expired.
No sign-up, no spam
Nothing to fill in, no email gate, no reselling your details. Type your bill and get your answer.
Kept current
Scheme, tariff, and policy figures reviewed as rules change. Last reviewed July 2026.
Ready to see your numbers?
It takes about ten seconds. Pick your country, enter your monthly bill, and we'll do the rest.
Choose your country162+ local calculators across three countries.