How Much Electricity Does The UK Need Each Day?

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Julii Brainard Profile
Julii Brainard answered
It depends partly on weather. Demand is lowest on mild summer days, and highest on very hot summer days (when refridgerators and air conditioning units are working hardest) or during the middle of winter (when lighting is on for the longest). Demand is lowest in the middle of the night (roughly 11pm-7am) and highest in the early evening (winter) or mid-afternoon (hot summer days).

Typically, though, you're looking at demand of about 6500 Megawatts per day, or 2.4 GWh per year.

It's projected that the demand for energy in the UK might rise to 4 GWh per annum by the year 2020.

It is very unclear where this energy supply might come from. At the moment, wind energy (for instance) only supplies about 6% of our energy needs. There are plans to increase wind generator capacity to produce 20% of UK electricity needs by the year 2020. Nuclear power currently supplies about 20% of our electricity needs, but many nuclear power stations are scheduled to be shut down in the next 15 years, and they may not be replaced. The hazards of emitting extra climate change gases puts a disincentive on building more fossil-fuel fired power stations, too.
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Anonymous commented
You don't seem to know the difference between power (kW/MW etc) and energy (MWh/GWh etc) and your figures and units are way out. Electricity demand in 2008 was 387 TWh (terawatt hours) in 2020 it is projected to be 386 TWh, which is actually less than the figure for 2008 (Source: UK Renewable energy strategy, Published by BERR 2008). If you want to work out the daily rates just divide above by 365!

1,000 kWh = 1 MWh
1,000 MWh = 1 GWh
1,000 GWh = 1 TWh

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