System operator National Grid can use a number of ways to control the supply of electricity if there is a spike in demand:
- It can lower the voltage, which means households may notice lights dimming or flickering
- Industrial customers can also be asked to come off the supply to protect households
More top news
Former Israeli president Shimon Peres dies, aged 93, following a stroke two weeks ago.
The eight foot bronze statue coincides with the 75th anniversary of Eric Morecambe and Ernie Wise first appearing on stage together.
Britney Spears sung hits from all nine of her albums during her highly-anticipated appearance at the Apple Music Festival in London.