It is situated in Tap Shek Kok [yue; ceb; sv], Tuen Mun District, on the north shore of Urmston Road.

The power station has been undertaking a range of programmes to improve emission performance, including refurbishing burners to reduce emission of nitrogen oxide, SCR (Selective Catalyst Reduction) and BOFA (Boosted Over Fire Air) has been installed, and flue-gas desulphurisation for sulphur removal.

The Castle Peak A Power Station was officially opened by Prime Minister Margaret Thatcher on 28 September 1982.

[6] On 19 November 2013, CLP Group and China Southern Power Grid Company (CSG) announced its acquisition of Exxon's 60% stake in Capco for HK$24 billion.

[9] In 2020, CLP installed an additional 550 MW combined cycle gas turbine (CCGT) from Siemens for the nearby gas-powered Black Point Power Station.