GreenCalc calculates which energy renovation subsidies a household qualifies for in France, Germany, Italy, Belgium, and Spain. Send a household profile and get back: eligible grants, zero-interest loans, tax benefits, and net cost after subsidies. 12 programs tracked across 5 countries with automated regulatory monitoring. Free sandbox — test every endpoint without signing up. Built for PropTech, neobanks, energy platforms, and green finance apps.

Hey Product Hunt! 👋 I built GreenCalc because every EU country runs its own renovation subsidy programs — MaPrimeRénov in France, KfW in Germany, Superbonus in Italy — each with different rules based on income, property type, and work planned. For devs building in PropTech or green finance, this means months of regulatory research per country. GreenCalc consolidates 12 programs across 5 countries into one POST endpoint. The sandbox is free and works instantly — no signup: curl -X POST https://greencalc.io/api/v1/elig... \ -H "X-Api-Key: gc_sandbox_000..." \ -d '{"country_code":"FR",...}' Use code PRODUCTHUNT for your first month free on any paid plan. Happy to answer questions about the API design or the EU subsidy landscape!

GreenCalc

One API for EU renovation subsidies across 5 countries

One API for EU renovation subsidies across 5 countries