As far as I can make out (it’s actually quite difficult to know what information is reliable and unbiased), the power generation capacity in the UK has actually decreased over the last 10 years or so. This is also likely to get worse before it gets better. Hinckley Point C will not come on line for years (and the agreed cost of the power it supplies is another issue), several older nuclear stations will go off line in the same period and whilst renewables are increasing rapidly, they are unlikely to take up the slack.
The situation is, I believe, similar in the US as demonstrated by the recent weather events in Texas and the mid west leading to power rationing. I don’t believe this is down to failures particularly, more demand outstripping supply.
I have lived in various countries in Africa where daily power rationing (also known as intermittent unplanned power cuts) was a way of daily life. There the normality of the situation and particularly the climate made it simply an inconvenience. BUT the byproducts (everyone who could afford one ran a generator, and most fridges ran on gas) would make Greta Thunberg wince.
Modern day life in most of the Western World would simply not cope with such a situation.
This is always brought to mind when people bang on about the EV situation. Just back of the envelope calculations suggest to me that we require at least a 10% increase in generating capacity to be even close to being able to charge the EVs that will be needed if we are to meet stated targets. That’s above and beyond any increase required otherwise. Admittedly, power demand per capita could go down but its not a given....
Dont get me wrong, I’m all in favour of anything we can do to decrease pollution, but it’s been a while since you heard about the lights going out being a serious option.
I think that certain parties are being very economical with the truth.
Incidentally, our extended family are going to holiday on a remote island with no electricity for a couple of weeks next year. It will be interesting to see who copes best, the teens and twenty somethings or those a few decades older......