Letter: Electric currents

From David R

O’Keeffe has forgotten one of the UK’s most important natural resources – micro-hydroelectric installations.

There must be thousands, if not tens of thousands of small streams, many of them already with weirs and former or still-present mills.

For a cost of £25,000 or so, these streams can supply a small village with electricity, and if multiplied countrywide could make a significant contribution to the nation’s power supplies.

And rivers, unlike the wind, only fluctuate seriously after extreme and rare droughts.
Timsbury, Somerset, UK

. Boswell