The Newfoundland and Labrador government has posted a request for proposals for a comprehensive review of the province's electrical system, a move that was promised after most people were put in the dark during early January's blackouts.

The independent review will not focus on the blackout. It will look at the operation and regulation of the entire system with a view to helping the province make the transition to being part of the North American grid after Muskrat Falls comes online in the next three to four years.

The government posted the request for proposals on its website on Monday evening.

The Public Utilities Board is conducting a separate investigation into January's blackouts.

"When developing our scope of work, we considered the terms and the process for the PUB's review. The intent of the review is to complement, not duplicate, these efforts," Natural Resources Minister Derrick Dalley said in a statement.

The independent review, among other things, will look at legislation governing the electrical system.

The review will also likely tackle one of the thorny issues that emerged during January's blackouts: the aging infrastructure of Newfoundland and Labrador Hydro's generating and transmission gear.

Newfoundland and Labrador's electrical system serves about 280,000 homes, businesses and other customers, through three different means: the island grid, which is not connected to the mainland; the Labrador grid, which is; and 21 diesel systems that provide power to isolated coastal communities.