H2 Energy and Copenhagen Infrastructure Partners are the two companies making the biggest grid connection agreements within PtX in Denmark.
The Swiss energy company H2 Energy will produce hydrogen via a 1 GW electrolysis plant, which can be used directly in heavy duty transport and other industries such as shipping and steel. The PtX plant at Veldbæk in Esbjerg is scheduled for completion in 2025.
Copenhagen Infrastructure Partners
Copenhagen Infrastructure Partners will produce green ammonia, a CO2-reducing alternative to agriculture and shipping, at its HØST PtX Esbjerg plant. The plant is expected to be established by the end of 2026. The main 400 kV connection from Energinet’s Endrup Station will supply the electrolysis part with a total power of 1.2 GW. A secondary connection of 150 kV from Lykkegaard will supply ammonia production with a total power of up to 199 MW.
Expansion of 400 kV substation
Production in PtX plants is very power-intensive. So, when H2Energy and Copenhagen Infrastructure Partners independently approached Energinet with the wish to connect their future facilities to Energinet’s transmission grid, it became necessary to expand the existing 400 kV substation in Endrup. The expansion also includes available fields that can be used for future connections.
Endrup is already an important node in the electricity grid. The Cobra link between Denmark and the Netherlands is connected to the grid here, and the future extension of the 400 kV high-voltage link from the Danish-German land border to Holstebro also runs through Endrup.
The station extension is expected to become operational in August 2025. The two facilities are expected to become operational in 2025 and 2026 respectively.