[redeyedtreefrog]

So if it goes ahead it will generate 10.5GW, but deliver 3.6GW for "20+ hours a day". I guess the 10.5GW figure is peak generation during the day with lots of wind + sun, then by using batteries it will be able to consistently deliver approx 1/3 of that, or 8% of current UK demand (from the article). Makes sense, but the headline used by the submission is a bit misleading.

At the same time, the electrification of heating + transport is predicted to approximately double UK electricity demand by 2050. So even if this goes ahead and works as intended, it will end up providing something like 4% of the UK's needs.

A whole bunch of comments here comparing this idea negatively to wind, nuclear or tankers filled with hydrogen (?!). Even if it goes ahead, there need to be like a dozen other new projects of similar scale just to meet demand on these small islands. If you also want to provide carbon free electricity to the other 10 billion people likely to be living on this planet by that 2050, then you need to multiply that dozen projects by a factor of at least 100.