About this calculator

How-to: pick the technology, country / scheme and system size. We apply the current headline subsidy: EU MaPrimeRénov' (FR), KfW 458 (DE), Ecobonus 65% (IT), Bonus IRPF (ES), UK Boiler Upgrade Scheme (£7,500 heat pump), Ireland SEAI, Netherlands ISDE, plus the US Residential Clean Energy Credit (30%). Result is a headline grant — always verify eligibility windows before ordering equipment.

Frequently asked questions

Do subsidies change often?

Yes — annual budget caps, rate cuts and closure dates are common. Treat this as a planning estimate and confirm on the scheme's official portal before signing a quote.

Can I combine grants with 0% VAT?

In the UK, qualifying energy-saving materials are 0% VAT until 2027. France applies reduced 5.5% VAT on renovation works. These stack with grants.

What about commercial installations?

This tool focuses on domestic. Commercial installs typically use tax depreciation (super-deduction, IRA §48 ITC) rather than grants.

What does the Renewable Energy Subsidy & Grant Estimator do?

Estimate the capital grant, feed-in tariff or tax credit available for a rooftop solar, heat pump, battery or EV charger install across major EU schemes, UK BUS/ECO4 and the US IRA 25D/45L credits. How-to: pick the technology, country / scheme and system size. We apply the current headline subsidy: EU MaPrimeRénov' (FR), KfW 458 (DE), Ecobonus 65% (IT), Bonus IRPF (ES), UK Boiler Upgrade Scheme (£7,500 heat pump), Ireland SEAI, Netherlands ISDE, plus the US Residential Clean Energy Credit (30%). Result is a headline grant — always verify eligibility windows before ordering equipment.

Is the Renewable Energy Subsidy & Grant Estimator free to use?

Yes. Every calculator on Calcurly.com is free, works in your browser without sign-up, and can be embedded on your own website.

How accurate is the Renewable Energy Subsidy & Grant Estimator?

Results are calculated in real time using industry-standard formulas. Treat the output as a well-informed estimate — always cross-check with local regulations, product datasheets, or a qualified eu energy labels professional before committing to a purchase or a job.

What inputs does the Renewable Energy Subsidy & Grant Estimator need?

Enter values for: Technology, Country / scheme, Total system cost, Currency, System size (kWp or kW). Sensible defaults are pre-filled where possible so you can start with a single change.

Can I embed the Renewable Energy Subsidy & Grant Estimator on my own website?

Yes — copy the iframe snippet at the bottom of this page, or use the Embed Generator to customise the size. The embedded version stays in sync with the live calculator on Calcurly.com.