Households are to receive discounts on their energy bills for cutting back on electricity.
Three UK coal plants have been ordered to begin warming up in case they are needed for the country's energy supply. National Grid ESO said it gave the instructions in light of forecasts showing electricity supply margins may be tighter than normal.
It added it was also activating a live "demand flexibility service" - which allows the ESO to access additional flexibility when national demand is at its highest during peak winter days - between 5-6pm on Monday.
