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+49 170 8253 264Graustromspeicher
The subsidy ends. Your grid connection stays.
Grid-charged battery storage for biogas plants with an existing grid connection above 250 kW in Schleswig-Holstein.
The EEG subsidy ends after 20 years
Once the EEG subsidy period ends, the biogas plant drops out of the feed-in tariff. At the same time, an existing, metered grid connection above 250 kW becomes a scarce asset: as of 1 April 2026, the transmission system operators replaced the previous first-come-first-served approach with a criteria-based maturity assessment procedure that makes new grid connections considerably harder and slower to obtain. An existing connection with grandfathered rights gains value as a result.
existing grid connection
new grid connection allocation procedure
Rules differ by grid level and grid operator. We check the specific situation for your connection.
What a grid-charged storage system changes at an existing grid connection
- ✓Uses the existing grid connection instead of decommissioning after the subsidy ends
- ✓Revenue from electricity market trading instead of unused connection capacity
- ✓Become a storage operator instead of feeding the biogas plant: no substrate, no silage, no daily trips to the plant
- ✓Revenue without feedstock and substrate price risk, land is freed up
- ✓Under the new allocation procedure, an existing grid connection is practically impossible to obtain again – the grandfathered status is the real asset
- ✓Remotely supervised operation: remote monitoring and ongoing supervision instead of round-the-clock plant readiness
existing grid connection
Guideline value. What matters is the actually available connection capacity of your plant. We check it against your data.
possible within 5 years
Depending on connection capacity, storage size and marketing revenue. The analysis shows what is achievable for your operation.
Planning, installation and commissioning from a single source
We size the grid-charged storage system to match your existing grid connection. One point of contact stays responsible throughout the entire project.
Three steps to the economic analysis
The analysis and the grid connection request are chargeable services; the scope is agreed in advance. Not financial advice.
Ove Knutzen
Consultation directly from the operator
After studying energy technology, I founded the company and have been managing PV and storage projects for almost three years.
+49 170 8253 264K.E.S. Knutzen Energy Solutions GmbH
Gutenbergstraße 12
24941 Flensburg
Consultation directly from the operator
Use grandfathered rights before the subsidy ends
Contact us for an assessment of your grid connection and plant.