The station was constructed in 1948–50 by the British Electricity Authority. It used two 314 feet (96 m) tall cooling towers to cool its water.

The boiler plant comprised five Babcock & Wilcox pulverised fuel fired boilers capable of delivering 1,425,000 lb/h (180.0 kg/s) of steam at 660 psi (45.5 bar) and 393 °C.

Following the construction of the national grid in 1928-33 Westwood power station was connected to an electricity grid ring which included the power stations at Southport, Lister Drive (Liverpool), Warrington and Ribble (Preston); this was one of three electricity rings in the North West.

The generating capacity of the station was 128 MW comprising four uprated British Thomson-Houston 32 MW turbo-alternators. The first generating set was commissioned in September 1951 followed by the other sets in December 1951, September 1952, and December 1953.

Steam condensing and cooling was by two Mitchell reinforced concrete hyperbolic cooling towers, each tower had a capacity of 3 million gallons per hour (3.79 m/s).

The generating capacity and output from Westwood power station is given in the following graph and table.

Westwood power station electricity output, GWh

Graphs are unavailable due to technical issues. Updates on reimplementing the Graph extension, which will be known as the Chart extension, can be found on Phabricator and on MediaWiki.org.

In the year ending 31 March 1972 the station's load factor (the average load as a per cent of maximum output capacity) was 20.6 per cent.

The station was demolished in 1989, the cooling towers were demolished on 15 January 1989.

The former power station site has been developed into Westwood business park with over 610,000 square feet (57,000 m) of office space. Another part of the site had been redeveloped into a Girobank office from the early 1990s until it was demolished in 2015 to make way for a 400,000 sqft Nice-Pak wet-wipe factory.