Former Bonville's Court Colliery Power House is a Grade II listed building in the Pembrokeshire Coast National Park local planning authority area, Wales. First listed on 26 September 1994. Power house.

Former Bonville's Court Colliery Power House

WRENN ID
quartered-pediment-violet
Grade
II
Local Planning Authority
Pembrokeshire Coast National Park
Constituency
Mid and South Pembrokeshire MP: Henry Tufnell (Lab)
Country
Wales
Date first listed
26 September 1994
Type
Power house
Address
Former Bonville's Court Colliery Power House, Bonville's Court Caravan Park, Saundersfoot
OS grid reference
SN 124 052
Coordinates
51.71489, -4.7165
Source
Cadw listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

The Former Bonville's Court Colliery Power House was built to house steam engines that generated electricity for the colliery and may have also included pumping equipment. Originally, it featured a hipped roof, but at the turn of the century, it was modified into a smaller building. One half received a gabled slate roof, while the other half was fitted with a monopitch corrugated roof. The entire structure is constructed of coursed sandstone rubble. There are several semi-circular brick arches on the west and east elevations that are now blocked. The gabled section has two sash windows on the north elevation, each consisting of three panes by seven, and a large brick arch on the east side that was originally used for wagon access. Additionally, a bearing for a machine drive can be seen at the southwest corner of the building.

Local climate

Former Bonville's Court Colliery Power House sits in one of the wettest parts of the UK, with an average of 1,210 mm of rain a year. This makes it wetter than 91% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 98% of listed buildings.

It experiences an average of 5 freeze-thaw cycles a year, fewer than 97% of listed buildings. Of these, 1 follows at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.

Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.

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