Hardwater Mill at Great Doddington, near Wellingborough produces it’s own Hydropower electricity.
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Photos used with the kind permission of Mannpower Consulting
The installation makes enough electricity to power the mill and produce extra for the National Grid.
Several other mills on the same stretch of river are also looking at producing energy.
Andy and Anne Newman, owners of the grade 2 listed mill, said it has taken most of their savings and more than two-and-a-half years to achieve.
Mrs Newman said: “We’re quite green people, we’re into recycling and have an air source heat pump to power our central heating system, and this water flowing under the building all the time was something we felt we wanted to harness.
“We’re looking at this not only for ourselves, but our children and even their children because this will go on for years and produce power endlessly,” added Mr Newman.
The couple have set up the Nene Valley Hydro-electricity group involving 12 mill owners along the river.
One of them is Woodford Mill at Ringstead where the original water wheel has been restored to power a tea room, holiday lets and a neighbouring marina.
Mr Clive Hodgson said; “It has always been an ambition of mine to get electricity from water. Even before I bought the mill it was something I’d always thought of and when I bought the mill it al came together as a really brilliant idea.”