German government confirms August 2029 grid fee exemption date for storage, but sets 2027 FID deadline

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Germany’s energy system regulator has confirmed that BESS projects coming online by 4 August 2029 will be exempt from charging and discharging grid fees, opening up investment again after months of uncertainty.

Bundesnetzagentur (Federal Network Agency) president Klaus Müller confirmed the news to Handelsblatt reporter Catianna Krapp this week, along with several other clarifications.

The 4 August 2029 deadline for large-scale energy storage projects was announced in late 2023. But recent statements by Bundesnetzagentur figureheads indicated that the deadline might be brought back. Or, even worse, it might have been done away with entirely and imposed on projects already online.

Muller has now clarified that projects commissioned by 4 August 2029 will be exempt. But they will have to reach final investment decision (FID) before the new regulation comes into effect to do so, which will be sometime in 2027.

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The regulator will then bring in dynamic grid fees for energy storage later, which is currently planned for between 2030 and 2033.

Battery energy storage system (BESS) industry executives reacted positively to the news, which Krapp posted on LinkedIn.

“This decision will provide clarity and security to enable billions of Euros of private investment into energy storage in Germany – strengthening energy security and creating a more efficient power system,” said Julian Jansen, Germany managing director for system integrator Fluence.

“However, with many projects facing development challenges, slow contracting processes, limited capacity to execute large-EPC projects in the market, developers and owners must be acutely aware of the ticking clock to reach FID.”

His colleague Lars Stephen said that no investment decisions have been made in the past five months because of the uncertainty. Some say that, uncertainty aside, grid fees make BESS projects uneconomical. BESS projects in Belgium are exempt (for now), the fees are flexible in the Netherlands, while Romania exempted storage from them recently.

Just yesterday, we published an article off comments from Georg Gallmetzer, managing director of owner-operator Eco Stor, who said that uncertainty around grid fees (and other things) had led to a ‘cooling’ of investor interest in Germany.

That uncertainty has been a counterweight to the huge opportunities in the country’s wholesale energy market, Europe’s largest.

Gallmetzer and other industry figureheads, including from Fluence, will be speaking at the Energy Storage Summit at The Battery Show Europe, in Stuttgart, Germany in two weeks’ time (9-11 June). Use our discount code ESN20 for 20% off. 

See our Q&A articles with event speakers below:

2 December 2026
Italy
Battery Asset Management Summit Europe is the annual meeting for owners, operators, investors, and optimisation specialists working with operational BESS assets across the continent. The Summit focuses on how to maximise performance and revenue, manage degradation, integrate advanced optimisation software, navigate evolving market and regulatory frameworks, and plan for repowering or end-of-life strategies. With insights from Europe’s most active storage markets, it equips attendees with practical guidance to run resilient, profitable battery portfolios as the sector scales.
22 February 2027
InterContinental London - The O2, London, UK
The Future of Energy Storage Starts Here Three days in London where developers, IPPs, investors, utilities and the manufacturers building the technology come to close deals, not swap business cards. If you need to be in the room with the people deploying capital into European storage, this is that room.

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