Eneco, Corre Energy partner on compressed air energy storage project – pv magazine International

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Corre Energy, a Dutch long-duration energy storage specialist, has partnered with utility Eneco to deliver its first compressed air energy storage (CAES) project in Germany. Eneco will acquire 50% of the project.

Groningen-based Corre Energy has signed an agreement with Dutch energy supplier Eneco for offtake, co-development, and co-investment of a compressed air energy storage project in Ahaus, Germany.

The project is based on four salt caverns in the German state of North Rhine-Westphalia with a total storage capacity of at least 500 MW. Eneco will operate, co-develop, and finance the project through its German subsidiary LichtBlick, one of Germany’s largest green energy suppliers. Cavern construction is already underway, with handover of the first two expected in early 2027.

Phase one of the Ahaus project will use two of the site’s existing salt caverns to deploy Corre Energy’s multiday CAES solution to deliver 220 MW of compression capacity and 320 MW of generation capacity. The project is expected to use equipment by Siemens Energy.

The agreement will see Eneco acquire a 50% interest in the project, at economics to be agreed, comprising both development capital and construction equity. “The agreement, which is subject to respective board approvals, significantly de-risks Corre Energy’s pathway to both commercial close and FID [final investment decision],” Corre Energy said.

“This landmark agreement combines offtake, development, and co-investment arrangements to propel our first German project while showcasing the latest demand for our CAES solution,” said Keith McGrane, CEO of Corre Energy.

The transaction represents Eneco’s second agreement with Corre Energy following its 15-year offtake agreement for the ZW1 project in the Netherlands, announced in December 2022.

“By locking in long-term investment partnerships such as in Germany, we are accelerating the commercial development of our portfolio underpinned by long-term offtake arrangements. These arrangements are repeatable across the portfolio and for each project can capture c€1bn of net revenue over the duration of a 15-year offtake agreement.” said McGrane.

The partnership will enable Eneco to use the full capacity of the first phase of the project in Ahaus once delivered in 2027. At the moment, chemical company Solvay is still extracting salt from the caverns.

“We see a bright future for these storage solutions, and this second project with Corre Energy brings us closer to achieving the goals set out in our One Planet Plan: to be climate neutral in 2035, together with our customers,” said Kees-Jan Rameau, COO – Integrated Energy at Eneco.

According to the project partners, the CAES site in Ahaus is well located between increasing offshore wind power production in the north and the significant power consumption regions to the south. It is close to the future national hydrogen backbone grid (H2-Startnetz) and will complement the regional establishment of an industrial scale renewables-based green hydrogen value chain.

The project represents the first CAES facility to be developed, constructed, and operated in Germany since 1978 when the 321 MW Huntorf plant was commissioned as the world’s first CAES plant. In recent years alone, several large-scale projects have been announced in the United StatesIsrael, Canada, Australia and China.

However, there has been a significant limit to the adoption rate of CAES due to its reliance on underground formations for storage.

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