Homeowners could be paid to use less energy at peak times tomorrow under emergency National Grid plans to ration supplies this winter. National Grid’s system operator said it was considering the first ever live run of its Demand Flexibility Service – which is designed to avoid blackouts by rewarding  people for kombi Servisi cutting demand down at peak times – on Tuesday evening. England and Wales are due to square off at 7pm tomorrow in a crunch World Cup game that both need to win to secure their passage to the knock-out stages in Qatar. According energy data firm EnAppSys cold weather and problems with ‘s plants is driving a spike…