It had two 250 feet (76.2 m) high chimneys. In 1964 work started on expanding Merseyside Power Station to meet growing demand. The new plant comprised: 1 × 104 tons/h boiler delivering steam at 1,500 psi (103.4 bar) and 538 °C, 1 × Associated Electrical Industries (AEI) 5.4 MW turbo-alternator generating at 11kV. This set was supplied with steam at 1,500 psi and discharged steam at 650 psi (44.3 bar). 1 × 8.1 MW turbo-alternator generating at 11 kV. This set took steam at 44.3 bar and reduced the steam pressure to 110 psi (7.59 bar). By 1966 the Unilever network had a total generating capacity of nearly 30 MW and provided steam at 50, 110, 230 and 1,500 psi (3.4, 7.6, 15.9 and 103 bar). In 1974, a further extension to Merseyside Power Station was undertaken and comprised a single high pressure boiler (rated at 104 tons/h), and two back pressure generating sets (5.8 MW) operating at 102/45 bar. The specification and condition of the boilers and turbines in the last few years of operation were as follows. The requirement for steam was reduced by new manufacturing processes and the aging generating plant was decommissioned in 1998. Merseyside Power Station was subsequently demolished. References Oil-fired power stations in England Demolished power stations in the United Kingdom Former power stations in England Buildings and structures in the Metropolitan Borough of Wirral