It won’t take an enemy power to overwhelm the National Grid.

Of all the problems with electric cars, perhaps the least expected was the revelation that some home charging points provide a potential point of weakness for malign foreign powers to interfere with our National Grid.

Last week, the Office for Product Safety and Standards ordered the company Wallbox to stop selling its Copper SB chargers because hackers could potentially access the chargers and incapacitate the grid by such means as suddenly turning on thousands of chargers full-pelt at the same time. The Telegraph has the story.

But do we really need a foreign power to crash our electricity grid when we are quite capable of inflicting it on ourselves? We are heading for a big electricity crunch as it is. Whoever wins the general election, the next government will be committed to decarbonising the National Grid – by 2035 in the case of the Conservatives and by 2030 in the case of Labour.

That means either closing all the gas power stations or fitting them with carbon capture and storage technology – which does not yet exist on scale in Britain and whose costs are likely to be massive. At the same time every single one of our existing nuclear power stations is currently due to reach the end of its life by 2035. If Hinkley C is delayed much beyond its latest estimated completion, we could end up with no nuclear at all.

That could leave us trying to power the country pretty much with intermittent wind and solar energy alone – and this at a time when politicians want millions more of us to be driving electric cars and heating our homes with heat pumps, thus substantially increasing demand. How will we keep the lights on? One struggles to find satisfactory explanation from the National Grid ESO, which is trusted with this task.

It has produced a vision for a winter’s day in 2035 which foresees massive amounts of energy being stored in the form of green hydrogen produced via the electrolysis of water – a technology which may not be ready by then. It also sees Britain importing around a quarter of its electricity. What happens if the countries we import it from are also short of renewable energy, it doesn’t say.

Read the full story here.