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> But night-time is exactly when the vehicles are charged in people's homes Average wind production over the last 2 years in the UK is 5.8GW, with the peak (>6
by iso1631 4y ago
> But night-time is exactly when the vehicles are charged in people's homes
Average wind production over the last 2 years in the UK is 5.8GW, with the peak (>6GW) between 1400 and 2200, and trough (<5.7GW) between 0200 and 0800, a total of 140GWh a day
But that's only a 5% variation between high and low.
Total demand though is lower at night than in the day. It's 25% down on the low at 0300-0400 and 17% up on average from 1800-1900, which more than offsets the daily variation in wind.
Throw in grid solar and sure, more renewables during the day (domestic solar isn't measured aside from a drop in demand) and you get an average 24% of current UK electricity driven by renewables, with a peak of 33% at midday and trough of 18% from 1900-2100.
But if you doubled wind that average peak would be 52% at 1200 for renewables, and a trough of 36%.
Assuming an infinite capacity grid (as the data isn't readily available), doubling wind+solar energy would save 40TWh of gas a year even with current demand. Tripling would save 60TWh, increasing 5-fold would save 76TWh, reducing Gas usage from 88TWh a year to 11TWh a year.
Those savings are based on real world generation and demand data from 2021.
Sure wind and solar can't entirely replace gas on its own, but it can knock usage down by 90% quite easily by putting up more strings between areas of the grid and simply building more.
You don't need to eliminate fossil fuels completely to make a difference.