A strike at the ESB is to go ahead tomorrow after talks aimed at resolving a dispute over the use of outside contractors failed to go ahead this morning.
Members of the ATGWU are to proceed with action from 8am tomorrow morning.
The strike was originally planned for today but postponed to allow for the talks, which the ESB subsequently withdrew from, saying they could not participate in talks until the threat of strike action was lifted.
ESB technicians claim apprentices at the company are being denied jobs due to the use of these contractors.
The strike will not immediately affect power supplies, but blackouts will be possible if the stoppage continues as technicians will not be available to repair breakdowns in the network.