Hinkley Point Power Station Since construction started in December 1957, considerable progress has been made at the world's largest nuclear power station. Building as the first in Britain's 5000-6000 mw nuclear power programme. Hinkley Point should be in commission by 1962. This is a close up of the structure of Reactor No. 1 showing the complete biological shield, the plinth for the steam raising units, and the steel work for the control room, gas examination room, etc. In the background, the work on Reactor No. 2 can be seen. 22 May 1959