Where will all the electricity come from?

An excellent article in the Sunday Times:

https://www.thetimes.co.uk/article/drivers-plugging-into-an-electric-future-will-need-a-lot-of-chargers-pbclhc78h

As any listener to 'You and Yours' yesterday will know, EVs have been received well by the public and, as long as the number and availability of chargers is increased, their take-up across the UK will accelerate.

But where will the reliable base load power to charge them (up to 8GW) come from?

Tidal lagoons can provide the power needed and avoid the possibility of fossil fuel being used to charge the growing fleet of EVs.