The former Grohnde Nuclear Power Plant is located in Grohnde in the Hamelin-Pyrmont district in Lower Saxony. It has one reactor that used 193 fuel assemblies and utilized both enriched uranium and MOX fuel. In 1985, 1986, 1987, 1989, 1990 and 1998 the reactor produced more net electricity for the respective year than any other reactor in the world.

The plant is of the pressurized water reactor type, using four water based coolant cycles, kept under high pressure.

In 2021 the plan passed the mark of 400 TWh total low-carbon electricity output since it was connected to the grid. Over the period the plant has prevented 400 million tons of CO₂ emissions.

The plant ceased power operation on 31 December 2021 as part of Germany's phaseout of nuclear power.