MUST-HAVE BALTIC SIGNAL — Estonia secures 1036 MW for grid-island operation
Elering and Enefit Power have signed a key agreement to guarantee Estonia’s ability to operate as an electrical island if connections to neighbouring grids are lost.
This is one of the most important strategic steps in the Baltic energy transition ahead of full desynchronisation from the Russia–Belarus grid.
Key facts
• 1036 MW of controllable capacity secured
• Maximum annual cost: €59.5 million
• Financed through the new security-of-supply fee on consumer bills starting 2026
• Cost for an average household: ~€2.35/month (incl. VAT)
Why it matters
Estonia’s controllable generation currently comes 85% from Enefit Power plants (Eesti, Balti, Auvere).
The agreement ensures these units remain operational until new modern capacity is built, providing a buffer against:
long, windless cold periods
temporary isolation from Continental Europe’s frequency zone
volatility on Nordic electricity markets
Market design note
The scheme is cost-based and audited.
If Enefit Power earns more revenue on energy markets than projected, the compensation decreases, reducing consumer costs.
Regional perspective
With the Baltics preparing for full synchronous operation with Continental Europe, island-operation capability is not optional — it is a core resilience requirement.
This move positions Estonia as one of the best-prepared energy systems in the region.
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