The state doesn't just fund your heat pump, it also helps you with electricity from your own roof. With KfW 271, there's low-interest loans and up to 20% repayment grant for photovoltaics and balcony solar systems in 2026. The best part: You can superbly combine this program with your KfW 270 heat pump funding.
Here you'll learn simply what KfW 271 exactly brings, who can participate, and how to make your heat pump + solar a real savings wonder. No technical jargon, just clear benefits and practical tips.
KfW 271 is the funding program specifically for renewable energies in the electricity sector. It supports the installation of photovoltaics and balcony solar systems with low-interest loans and an attractive repayment grant.
You get not just cheap money to finance, but a portion of the loan is even waived later. This makes solar 2026 even more attractive, especially in combination with your new heat pump.
| Advantage | What You Get | Special Feature |
|---|---|---|
| Low-interest loans | Affordable loans for PV systems | Significantly below market interest rate |
| Repayment grant | Up to 20% | Direct waiver, you pay back less |
| Combination with KfW 270 | Heat pump + solar simultaneously fundable | Perfect double pack for maximum savings |
| Simplified procedure | For balcony solar systems up to 800 W | Super simple and fast |
Especially clever: If you install a heat pump (KfW 270) and a solar system (KfW 271) simultaneously, you benefit doubly, cheap electricity for your heat pump + extra repayment grant.
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Open free calculator now →Private individuals (homeowners, but also tenants for balcony solar systems)
Companies and commercial enterprises
For balcony solar systems up to 800 W, there's an extra simplified procedure, the application is fast and uncomplicated. You don't need complicated appraisals, and everything runs digitally via your bank or directly through KfW.
KfW 271 becomes really powerful when you combine it with your heat pump: Solar electricity makes your heat pump even cheaper (buy less electricity from the grid) and the repayment grant of up to 20% noticeably lowers your monthly rate.
Many homeowners finance their complete energy turnaround (heat pump + solar) almost at a zero tariff.
Say you take out a loan of 15,000 EUR for a photovoltaic system with storage. With a repayment grant of 20%, 3,000 EUR of that is forgiven, so you only pay back 12,000 EUR. On top of that comes the interest advantage, because KfW loans are clearly below the market rate.
The most interesting part is the combination: have the heat pump funded through KfW 270 with up to 70% grant, and finance the solar system through KfW 271 at the same time. The solar power then lowers the effective electricity price for the heat pump, often below 0.10 EUR per kWh, and the repayment grant additionally reduces your financing. Together, the two programs are the strongest package in 2026 for everyone who wants to take heating and electricity into their own hands.
❓ Does KfW 271 provide a direct grant or just a loan?
It's a low-interest loan plus up to 20% repayment grant. A portion of the loan is waived later, it's almost as good as a grant.
❓ Can I use KfW 270 (heat pump) and KfW 271 (solar) together?
Yes, and it pays off massively! Many combine both programs and save thousands in electricity and heating costs.
❓ Does the funding also apply to small balcony solar systems?
Yes! Up to 800 W there's a greatly simplified procedure. Ideal for anyone wanting to start quickly and uncomplicated.
❓ Who submits the funding application?
The application runs through your house bank or directly via the KfW portal. Many solar installers help you with it free of charge.