“RAAEY’s Decision E-65/2025: A Regulatory Milestone for Greece’s Entry into the New Energy Storage Era”
(Article drafted by Ioanna Toufexi, Associate, and Andreas Papastathis, Partner, for Lexology on September 5, 2025)
The recent Decision E-65/2025 of the Greek Regulatory Authority for Waste, Energy, and Water (RAAEW) marks a decisive step in Greece’s energy transition, as it introduces for the first time a comprehensive methodology for calculating annual operational support for electricity storage projects starting operations from January 2026. This landmark decision not only completes the national regulatory framework for storage but also aligns fully with EU state aid rules, the CEEAG 2022 Guidelines, and Greece’s National Energy and Climate Plan.
By introducing the concept of “Reference Revenue” and linking support mechanisms to actual market performance, the framework ensures both the financial sustainability of storage investments and their active participation in the electricity market, particularly in balancing services. At the same time, it mitigates risks from market volatility, reduces curtailment of renewable production, and enhances system security.
While the methodology brings innovation and strong investment incentives, it also introduces new challenges, such as administrative complexity and compliance with performance benchmarks. Nevertheless, Decision E-65/2025 represents a regulatory milestone that balances investment stability with market discipline, paving the way for Greece’s entry into a new era of energy storage and renewable integration.
You can read the full article on Lexology: “RAAEY’S Decision E-65/2025: A Regulatory Milestone for Greece’s Entry into the New Energy Storage Era”
The article is available here: (pdf).