Loan (KfW Renewable Energy Programme Storage)

Updated: 11.01.2019

Author: Tim Sternkopf

The KfW Renewable Energy Programme –Storage provides low interest loans for stationary battery storage systems related to a PV installation. The investment addresses either the erection of a new PV installation in conjunction with a battery storage system or only the financing of a battery storage system, which is related to a PV installation, which has been put into operation after 31 December 2012. The battery storage systems have to be located on the territory of Germany. Only one storage system for each PV installation is eligible for support. Additionally, the PV installation in conjunction with the battery storage system is allowed to have an installed capacity of maximum 30 kWp. This low-interest loan cannot be combined with other KfW Programmes and is valid between 2016 and 2018. 

Eligible technologies

The programme promotes the usage of stationary battery storage systems, related to a PV installation, which is connected to the electricity grid. 

Solar energy



Up to 100% of the net investment value is eligible for financing. 
Different kind of maturities are possible: 5, 10, or 20 years with a maximum repayment free period of one year, two or respectively three years. For credits up to 10 years, the interest rate is fix. For credits over more than 10 years the interest rate can be fixed either for the first 10 years or for the whole period of time. The installed capacity of the PV power station must not exceed 30 kWp and the feed-in to the grid is limited to 50% of the plant’s capacity. It is a long-term and low-interest loan during a period of 5/10/20 years including a 1/2/3-year repayment-free start-up period. The fixed interest rate is renegotiated after 10 years. Moreover, a commitment fee of 0.25% per month is charged. The share of investment costs eligible for support is gradually reduced every quarter year:
  • 1.3.2016 - 30.6.2016: 25% 
  • 01.07.2016 - 31.12 2016: 22% 
  • 01.01.2017 - 30.06.2017: 19% 
  • 01.07.2017 - 30.09.2017: 16%
  • 01.10.2017 - 31.12 2017: 13% 
  • 01.01.2018 - 31.12 2018: 10%


Foreign and domestic commercial companies, companies hold partially by churches, municipalities or charitable organizations, self-employed professionals, natural persons or non-profit applicants, which use at least partially the produced electricity for their own consumption. 


Process flow

Applications have to be submitted to a bank before starting the project. Planning services prior to the application are allowed. Relevant application forms can be downloaded from 

Competent authority

KfW loans are administered and disbursed by regular banks.

Distribution of costs


KfW Bankengruppe bears the costs of offering low-interest loans.


Further information