Bold Power Station

Bold Power Station refers to a series of two coal-fired power stations that were situated in Bold near St Helens in Merseyside, North West England. They are now closed.

Bold A and B Power Stations were coal fired, with a direct coal conveyor belt link from a washery at the colliery. This fed either directly to coal bunkers in both stations or to a stocking area. The extensive rail sidings were utilised for coal delivery, either from Bold Colliery or from other collieries via the main Liverpool to Manchester Lines. The coal from Bold Colliery was deep mined and therefore costly to recover. In later years, due to commercial reasons, the main coal supply became mostly by road from either Yorkshire or Scotland.

The 'A' power station had an installed capacity of 120 MW. It consisted of four 30 MW two-cylinder turbines/alternators manufactured by Metropolitan-Vickers and Associated Electrical Industries (AEI). No.3 M/C was installed with the first direct water-cooled alternator. Steam was supplied from four Yarrow & Co. coal-fired boilers with tangentially fired tilting pulverized fuel burners, with 3no type LM13 table mills made by International Combustion of Derby.

The 'B' power station was installed with three 60 MW machines (equalling 180 MW total capacity). It used a central unit control system with the turbine/hydrogen cooled alternators manufactured by the General Electric Company (GEC). As with 'A' power station, no.3 alternator was a prototype direct water-cooled machine. The coolant water was fed via glass tubes on the three-phase connections. Each unit had boilers manufactured by John Thompson of Wolverhampton, each using two suction ball mills each with two exhausters, these feeding to twelve front wall pulverized fuel burners. The boilers fed steam at 900 psi/900 degrees Fahrenheit directly to each turbine/alternator.

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