ENERGY prices are to rise again in January while suppliers stuff their pockets with billions in unearned profits.

Watchdog Ofgem is expected to announce an increase in its energy price cap by 1 per cent from January 1, according to energy consultancy Cornwall Insight today.

This would add £19 to the current average annual household bill of £1,717 and comes on top of a 10 per cent rise in October, it said.