An announcement from the National Grid Electricity System Operator (ESO) stated that its electricity supply margins are expected to be tighter than predicted. The National Grid plans to run its "demand flexibility service" between 5pm and 6pm this evening. So, what is the "demand flexibility scheme", ran by the National Grid? Tonight - Monday, January 23 - is the first time ever that the National Grid has officially used the scheme to reduce pressure on the grid. "We have instructed coal-fired power units to be available to increase electricity supplies should it be needed.
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