The Kaskasi offshore wind farm developed by German utility RWE will supply seven major industrial customers in the country with green electricity from 2026.
RWE Supply & Trading signed corresponding power purchase agreements (PPAs) with DHL, Ensinger, Evonik, Infraserv Höchst, Thyssenkrupp Steel Europe, and Vodafone. The first PPA from Kaskasi was signed with the retail divisions of the Schwarz Group – which owns Lidl and Kaufland – back in 2023. The deals ensure around 1,000 GWh per year.
According to the German firm, most of the contracts run for ten years and include either a direct purchase (as-produced), a scheduled profile delivery (as-nominated), and a delivery of constant volumes (baseload delivery). The first contract will start in 2026, with further contracts to follow in 2027 and 2028, thus fully allocating the electricity volume available for the PPAs.
The Kaskasi wind farm is located around 35 kilometres off the coast of Heligoland and has 38 wind turbines with a total installed capacity of 34MW. The wind farm can supply 400,000 households a year with green electricity.
The Kaskasi wind farm is part of the Heligoland cluster, which also includes the Amrumbank and Nordsee Ost wind farms. In the German North Sea, RWE also has stakes in the Nordsee One and Alpha Ventus 1 and 2 wind farms, as well as the Arkona offshore wind farm in the German Baltic Sea.
This gives RWE an offshore wind portfolio in Germany of around 1.2GW. The four sites have a total capacity of up to 1.6GW and are scheduled to go into operation in 2027 and 2029 respectively.
