| Name | Location | County | Country | Power source | Type | Function | River |
| Pandy, Commins Coch | Commins Coch, Glantwymyn | Montgomeryshire | United Kingdom | Water | Watermill | Fulling mill | Twymyn |
| Troed-y-Rhiw Factory, Commins Coch | Commins Coch, Glantwymyn | Montgomeryshire | United Kingdom | Water | Watermill | Woollen mill | Twymyn |