Advanced Boiling Water Reactor 

ABWR – An Advanced Boiling Water Reactor is a light water reactor that generates steam within the reactor and passes it directly to the turbine. This is known as a direct-cycle reactor. The ABWR is an updated design of a boiling water reactor and is offered by both Hitachi-GE Nuclear Energy and Toshiba.

The ABWR is classified as a generation III+ reactor, due to the enhancements included over earlier designs, and it produces around 1350 MWe of electricity.

The ABWR is operational at four sites in Japan: two at Kashiwazaki-Kariwa, one at Hamaoka and one at Shika. There are a further four in construction, two at Lungmen in Taiwan and one at both Shimane and Ohma in Japan. Horizon Nuclear Power, a 100% subsidiary of Hitachi Ltd, plans to deploy the UK Advanced Boiling Water Reactor (ABWR) at two sites: Wylfa on the Isle of Anglesey and Oldbury-on-Severn in Gloucestershire.

For more information on the ABWR see:

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