It was led at time of closure by the secretary of state for energy and climate change, Amber Rudd MP.

The department released a major White Paper in July 2009, setting out its purpose and plans.

The costs to the government of nuclear decommissioning are expected to increase when the last of the United Kingdom's Magnox reactors are shut down and no longer produce an income.

[9] However, the proposed disbanding and merger did occur, shortly after the appointment of Theresa May as Prime Minister.

The devolution of energy policy varies around the United Kingdom; most aspects in Great Britain are decided at Westminster.