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Home » Industry » Sources of power » Water power

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Aerial photograph of Dyfi Blast Furnace and Charcoal Store, Furnace
  • Between 1870 and 1925, this waterwheel supplied the Gilfach Ddu workshops with power. It was built by the De Winton company from Caernarfon and is the largest waterwheel on mainland Britain, measuring 15.4 meters in diameter. It was estimated that the cost of assembling and erecting the wheel in 1870 was £560, the cost of the cast iron pipes and the valves £3500, the shafting, gearing and pulleys in the workshops amounted to £1393-19 shillings and the bridge which supported the pipes across afon Bala was built for £50-50 shillings. In 1877 the wheel itself was valued at £1200.
Waterwheel, Dinorwig Workshops, Gilfach Ddu, Llanberis, 1969
Aerial photograph of Maentwrog Hydro-Electric Power Station, 1996
  • Between 1870 and 1925, this water wheel supplied the Dinorwig Quarry workshops at Gilfach Ddu with power. It was built by the De Winton company from Caernarfon and is the largest water wheel on mainland Britain, measuring 15.4 meters in diameter. It is estimated that it cost £560 to assemble and erect the wheel in 1870 and £3500 for the cast iron pipes, while the valves, the shafting, gearing and pulleys in the workshops amounted to £1393-19 shillings and the bridge which supported the pipes across afon Bala was built for £50-50 shillings. In 1877 the wheel itself was valued at £1200.
Water wheel
'Felin Newydd on the Rhydol', probably by the Aberystwyth naive painter known as 'A Welsh Primitif', c. 1840
'The Mill at Swydd y Funnon', probably by the Aberystwyth naive painter known as 'A Welsh Primitif', c. 1840