KfW 270: Your Guide to Solar System Funding in 2026

Germany offers robust support for homeowners and businesses investing in photovoltaic (PV) systems. This support comes in three primary forms: the KfW 270 low-interest loan, a tax bonus, and a guaranteed feed-in tariff under the Renewable Energy Sources Act (EEG). A certified specialist company can coordinate the entire process for you.

KfW 270 Loan: Low-Interest Financing for Renewable Energy

The KfW 270, officially “Erneuerbare Energien – Standard,” provides an affordable promotional loan from KfW Banking Group for investments in renewable energy generation. The program is available to private individuals, companies, and public institutions. KfW finances the erection, expansion, and acquisition of plants for utilizing renewable energies, including associated costs for planning, project design, and installation.

As of February 2026, interest rates vary based on the loan term and creditworthiness, categorized into price classes A, B, and C:

• 5 Years: 4.00% – 4.90% effective annual interest rate
• 10 Years: 4.20% – 5.10% effective annual interest rate
• 15 Years: 4.35% – 5.25% effective annual interest rate
• 20 Years: 4.50% – 5.50% effective annual interest rate

These rates are as of February 2026 and are subject to change. Contact your local bank for precise conditions. Checkeverything.de notes that the KfW 270 program can finance up to 100% of investment costs, with a repayment-free start period of up to three years and free special repayments.

Tax Bonus for Photovoltaic Systems

Since 2023, profits from photovoltaic systems up to 30 kWp are completely exempt from income tax, retroactively and without application. There is no sales tax on the purchase and installation of systems up to 30 kWp (0% VAT). Enpal highlights this significant tax benefit.

EEG Feed-in Tariff: Guaranteed Remuneration for Excess Electricity

Excess electricity generated by your PV system is paid for at a guaranteed price for 20 years under the EEG. For systems up to 10 kWp, as of February 2026, the rates are approximately 7.78 ct/kWh (partial feed-in) or 12.35 ct/kWh (full feed-in). These rates decrease by 1% every six months, so initiating operations in 2026 secures the current rate for the full 20-year period.

Important Considerations for KfW 270 Application

You must secure KfW 270 funding before ordering your system. The application process is through your local bank. Photovoltaikanbieter.com emphasizes the importance of using a certified specialist company to assist with the process, document preparation, and ensuring all requirements are met before ordering the system.

Maximize Savings by Comparing Offers

Market studies indicate that obtaining only one quote for a solar system can result in paying 20-30% more than comparing multiple specialist companies. Utilizing a portal to receive up to five independent, free, and non-binding offers can maximize savings, benefiting from both government funding and the most competitive market price.

Eligible Measures

The KfW 270 program finances a range of technologies, including: Checkeverything.de

• Photovoltaic systems (roof and ground-mounted)
• Battery storage (including retrofitting)
• Solar thermal systems
• Biogas and wind power plants
• Hydro and geothermal power