The eclipse will be total to the north of the UK, in the Faroe Islands and the Svalbard archipelago. In Britain, the best views will be seen by people in the north, where the sun will be almost completely obscured. But even in London, around 85 per cent of the sun will be covered at the peak of the eclipse, and there will not be another chance to see one of this magnitude until 2026.
The event will be closely monitored by grid managers. In 1999, which saw a total eclipse over southwest England, a solar panel was a rare sight on a British roof or field. Today there is more than 5,000 megawatts of solar generating capacity, more than from Yorkshire's huge Drax power plant, the country's biggest.
Other nations, such as Germany, have almost eight times as much solar power, and Europe's electricity system operators have given warning about the prospect of disrupted supplies during the eclipse.
Up to 35 gigawatts of solar power, the equivalent of about 80 conventional power stations, is expected to fall off the European grid during the event, according to Frost & Sullivan research analysts.
The UK's National Grid will be working with its counterparts on the continent to ensure supplies are maintained, but says it is well-prepared.
"We are in a slightly different position to some of our counterparts in Europe, owing to our particular generation mix," said the Grid, explaining that it was expecting a loss of 850 megawatts of solar power from the system.
Read MoreSolar eclipse threatens European power supplies