Mexico's state-owned electric utility is seeking private-sector bids for five natural-gas pipelines, with expected construction cost of $2.25bn, in northern Mexico.

Wall Street Journal cited Comisión Federal de Electricidad (CFE) director Enrique Ochoa as saying that electric utility and the Energy Ministry will announce the projects details in near future.

The natural-gas projects are intended to enhance capacity into the national pipeline network and improve its reliability, Ochoa added.

The first of the five pipelines, with a capacity to transport 350 million cubic feet a day of gas, is expected to run for 158 miles in northern Chihuahua state.

Three of the pipelines will run from the US, two from Waha in West Texas and one from Ehrenberg, in Arizona.

The five pipelines, with projected $400m investment, will have overall capacity to transport 1.78 billion cubic feet a day of natural gas while