Britain's energy watchdog has given the green light to an initial £28 billion of investment to upgrade UK energy infrastructure, but revealed the move will push up network charges on household bills by £108.In its final verdict on price controls for energy network firms over the next five years, Ofgem has increased the allowed investment spend from the initial £24 billion that was provisionally given the go-ahead in the summer.

Britain's energy watchdog has given the green light to an initial £28 billion of investment to upgrade UK energy infrastructure, but revealed the move will push up network charges on household bills by £108.In its final verdict on price controls for energy network firms over the next five years, Ofgem has increased the allowed investment spend from the initial £24 billion that was provisionally given the go-ahead in the summer.