Storm Eustice: What do big storms mean for wind power?

Parts of the UK are being hammered by Storm Eunice, with winds of up to 92mph (148km/h) recorded in Wales.

But does more wind during such large storms generate more energy for wind power captured in the UK's turbines?

Prof Nicholas Jenkins, of Cardiff University's School of Engineering, is an expert on the subject.

He explains why more high wind does not usually mean more green energy in the grid.