From April 1, 2026, Germany's four transmission system operators are changing the procedure for large grid connection requests (>100 MW).
Instead of "first come, first served", it will now be "first ready, first served".
This primarily affects large-scale battery storage, data centers, and electrolyzers.
The competitive landscape is shifting significantly. Applications will now be collected in application rounds and prioritized based on project maturity.
What Counts for Maturity Assessment
- Secured land (purchase or lease agreement)
- Permitting status (BImSchG / building law)
- Technical connection concept
- Financing capability
- Grid and system benefit (definition tbd)
💰 Costs: €50,000 application fee + €1,500/MW deposit upon acceptance.
What Does This Mean at DSO Level?
Some E.ON distribution system operators are already showing this trend. A SNAP assessment (Schnelle Netzanschlussprüfung) only serves as an initial orientation on grid conditions.
A serious review and possible reservation only occurs when concrete project progress is demonstrated — such as secured land and an ongoing building permit process.
The planned Grid Package 2026 is likely to embed this logic more broadly among DSOs.
Conclusion
Grid connection has always been the biggest value driver for BESS projects. With current developments, grid applications are becoming more expensive and existing grid connections / reservations even more valuable. For developers with capital access and advanced projects, this means tailwind. For everyone else, another hurdle on the path to grid connection.
