The ongoing drought in the UK and Europe is putting electricity generation under pressure, say experts. Electricity from hydropower - which uses water to generate power - has dropped by 20% overall. And nuclear facilities, which are cooled using river water, have been restricted. Sunny Handa MD said, there are fears that the shortfalls are a taste of what will happen in the coming winter. In the UK, high temperatures are hitting energy output from fossil, nuclear and solar sources.