Again not a great deal of electricity. I bet the payback time before any true profit is generated will be in the tens of years. But of course this scheme should not affect the river too directly. Not more than it does already.

The article suggests that this is a water supply reservoir, which also feeds the Tame. Does it only feed the Tame when full, or is there a steady supply to the Tame regardless of water levels in the reservoir?

If it is a water supply reservoir they could also use the "tapwater" outflow to generate power.

Harrison's weir has also been considered for power, but I can't remember whether it was given the go ahead.