| Name | Location | County | Country | Power source | Type | Function | River |
| Aberdulais Mill, Aberdulais | Aberdulais | Glamorgan | United Kingdom | Water | Watermill | Electricity generating mill, Copper works, Fulling mill, Corn mill, Tinplate works | Dulais |
| Greenfield Mills, Holywell | Holywell | Flintshire | United Kingdom | Water | Watermill | Brass mill, Copper works, Rolling mill, Textile mill | Holywell Stream |