Elements Green Signs TenneT Grid Deal for 400 MW / 1.6 GWh Stadorf BESS

Elements Green Deutschland GmbH has signed a grid connection agreement with transmission system operator TenneT for a 400 MW / 1.6 GWh battery energy storage system (BESS) at Stadorf, Lower Saxony, according to reports published on Nov. 10, 2026 by ESS News and The Energyst.

The plant, near Uelzen, has a four-hour duration and will connect directly to the high-voltage grid, ESS News said. The Energyst describes the connection level as extra-high-voltage. The signing follows a connection construction agreement that Elements Green signed earlier this year, and the two contracts together set out the framework for building and later operating the grid connection, according to The Energyst.

Elements Green, a London-based developer that finances, develops and operates its own storage sites, says the next steps are detailed planning of the grid connection infrastructure and preparation for construction. Michael Zimmermann, managing director of Elements Green Deutschland, said the agreement means the key contractual foundations are in place for connecting the 400 MW project.

For grid operators and investors, the contract matters more than the earlier announcements. In Germany, a developer's place in line for a transmission connection is the scarce asset. Elements Green had already said in October 2025 that it held grid connection commitments for all eight of its planned German sites, as ESS News reported then. The new fact is that the Stadorf connection is now contracted, with TenneT, rather than promised.