00:01Households are being warned energy bills could rise unless work to upgrade the electricity
00:05grid speeds up. The National Audit Office says delays could push the cost of managing
00:10the network to £7.8 billion a year by 2030. The grid needs upgrades to carry more electricity
00:17from renewable sources to homes and businesses. The NAO says 80 projects are needed, but many
00:23are at an early stage. Constraint costs including payments made when the grid cannot carry available
00:29power reached £1.9 billion last year. The watchdog says delays could increase costs and hamper
00:37economic growth. Ofgem says faster investment should reduce costs for consumers.
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