Calls are being made for an all-Ireland market for electricity and water.
SDLP Fermanagh and South Tyrone MLA Tommy Gallagher has asked regulators on both sides of the border to sort out the provision.
One of his constituents, who lives close to the Donegal border, was turned down by ESB, as the company cannot connect to new customers in the North.
Mr Gallagher says that cross-border connections have been used for a long time, and should be allowed continue.
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