PLUTO power station in the pavilion at Browns golf course

This is a timber golf pavilion, built in 1936, which was extended and adapted around 1944 to house equipment related to the PLUTO (Pipe-Line Under Ocean) project. The building is timber-framed and clad in feather-edged elm board, with a felt-battened roof and painted wooden windows.

The pavilion consists of a linear arrangement of three connected plant rooms facing east, with a further projection to the north-west corner at the rear. To the west and south are two sets of water tanks. The principal, east-facing elevation is single-storey and features a double-gabled front with a small, central inset verandah. The verandah has a single timber-panelled door and eye-level leaded-light casement windows to either side. Most of the windows are timber casements, with either 12 or 15 panes. The roof is pitched over the gables, and flat over extensions to the north and west. The water tanks are cylindrical, constructed of corrugated iron, and stand on a concrete plinth, reaching approximately 2 metres in height and 1 metre in diameter; there are three to the west and two to the south, each fed by an exhaust pipe that exits the building and enters the drums.

Inside, there are three rooms: a central room, an extended room to the north containing a large engine, and a smaller engine room to the south. The interior is utilitarian, with some plastered walls. The southern room has terracotta floor tiles, partially obscured by a later concrete engine base. The timber roof structure is exposed, showing evidence of extension and reinforcement. The building contains two Ruston engines; the larger has an approximately 12.5-inch diameter bore, producing around 90 horsepower, and drove two adjacent Metropolitan Vickers DC generators of 16-25kW output. The smaller Ruston engine has an 8-inch bore, producing around 40hp, and drove a single, 25kW generator. The central room also houses a 5.7kW generator, a water pump, and a twin-cylinder Lister engine, along with a grey-metal power-board with control switches and dials, and two freestanding regulators for controlling the electrical power.