The electricity regulator is expected to sanction an 8% rise in ESB charges following a review of the current tariffs at the end of next month.
The move, which is designed to fund a major restructuring plan at the semi-state company, will almost certainly have a huge impact on inflation.
Yesterday, cable provider NTL announced that it is seeking a 34% price rise, while its main competitor, Chorus, is seeking a 24% rise.