A Major Milestone for Greek Energy Storage

METLEN and Karatzis Group have officially inaugurated Greece's largest standalone battery energy storage system (BESS) in Larissa, Thessaly. The newly commissioned facility boasts a power capacity of 330 MW and an energy storage capacity of 790 MWh. This significant development not only cements its status as the largest standalone energy storage facility in Eastern Europe but also positions it among the largest in the European Union. The inauguration marks a critical step forward in Greece's national energy strategy, aiming to phase out fossil fuels and maximize the utilization of domestic solar and wind resources.

Strategic Joint Venture and EU Funding

The project was successfully delivered through a joint investment vehicle structured between the two industry leaders. METLEN holds a 49% stake in the venture, while Karatzis Group retains the majority 51% stake. METLEN is fully responsible for the construction, operation, and ongoing maintenance of the facility, leveraging its extensive experience in the European renewable energy sector.

Crucially, the investment is implemented with substantial loan support from the EU’s Recovery and Resilience Facility under the NextGenerationEU framework, highlighting the bloc's commitment to accelerating clean energy infrastructure and achieving climate neutrality by 2050.

Grid Stability and Market Integration

As a standalone system, the Thessaly BESS is designed to provide essential grid services, including frequency regulation, voltage support, and peak shaving. Unlike co-located systems, standalone BESS can optimize revenue streams by participating directly in wholesale electricity markets and ancillary service markets. This flexibility is vital for managing the intermittency of renewable generation. The successful deployment of this mega-project demonstrates the growing maturity of the European BESS market and sets a benchmark for future large-scale storage deployments across Southern and Eastern Europe.

Source: METLEN

This article was assisted by AI analysis. Please refer to the original source for official information.