Corsica Sole, an independent solar energy producer and European leader in energy storage, is proud to announce the conclusion of €85.6 million in financing for its Hertz 1 and Hertz 2 storage projects in Estonia.

This financing was obtained by the Baltic Storage Platform (BSP) joint venture, bringing together Corsica Sole, Evecon and Mirova, from the European Bank for Reconstruction and Development (EBRD), the Nordic Investment Bank (NIB) and Edmond de Rothschild Asset Management.

Pioneering financing for energy storage in Europe

Ce financement marque une première dans les

This financing marks a first in the Baltic countries: it is the first project financing structured exclusively around revenues from energy storage assets.

This is a major step forward for the sector, demonstrating that large-scale storage is now a strategic and bankable asset, capable of attracting private capital to support the European energy transition.

This success also benefits from the support of the European Union, through the InvestEU programme, highlighting the recognition of the key role that storage solutions play in building a decarbonised and resilient electricity system.

Hertz 1 and Hertz 2: a strategic complex for the Baltic region

Located in Kiisa and Aruküla, near Tallinn, the Hertz 1 and Hertz 2 projects will form one of the largest energy storage complexes in continental Europe, with a combined capacity of 200 MW of power and 400 MWh of storage.

These facilities will play a key role in stabilising the Baltic electricity grid, which was recently synchronised with the European grid, and in reducing dependence on fossil fuels.

The Hertz 1 project, which was already powered up in early October 2025, will be fully operational by the end of the year, while Hertz 2 will come on stream in 2026.

Corsica Sole’s expertise at the service of European energy sovereignty

Thanks to its recognised experience in the development, construction and operation of storage and photovoltaic power plants, Corsica Sole is once again demonstrating its ability to deploy innovative solutions on a European scale.

These projects are fully in line with the company’s mission: to build sustainable energy infrastructure that contributes to the decarbonisation and energy independence of the continent.

A major step forward for the European energy transition

The finalisation of this financing illustrates the strength of collaboration between private actors and international institutions to accelerate the energy transition.

With Hertz 1 and Hertz 2, Corsica Sole reaffirms its pioneering role in the development of energy storage and contributes to building a more flexible, cleaner and safer European electricity grid.