HALIFAX -- A proposed liquefied natural gas facility in Cape Breton has received export approval from the U.S. Department of Energy.

Bear Head LNG Corp. says the approval would authorize it to bring up to 440 billion cubic feet per year of U.S. natural gas to Canada and to export up to eight million tonnes of liquefied natural gas per year to free trade countries.

The company says it is now waiting for the same authorization from Canada's National Energy Board.

Environmental approval was granted by the Nova Scotia's Environment Department in May.

The company must address 32 terms and conditions to control greenhouse-gas emissions and to reduce impacts on wildlife, water and wetlands at the site near Port Hawkesbury.

Construction of the facility is expected to begin next year, with operations to start in 2019.