Canadian and U.S. subsidiaries of Berkshire Hathaway Energy have agreed to buy all of the shares of Enbridge Inc.'s Montana Alberta Tie Line, a 300-MW conduit that can carry power to grids in both regions, according to regulatory filings in both countries.

In a Feb. 7 filing with a commission of the Canada Energy Regulator, Enbridge said it "wishes to advise the commission that it has agreed to transfer 100% of the issued and outstanding shares of MATL [Montana Alberta Tie Line] to BHE Canada Holdings Corporation pursuant to a share purchase agreement dated January 17, 2020, subject to certain conditions." BHE Canada is an affiliate of Iowa-based Berkshire Hathaway Energy.

On Jan. 31, another Berkshire Hathaway Energy unit, BHE U.S. Transmission LLC, applied to the U.S. Federal Energy Regulatory Commission for approval to acquire the U.S. portion of the line. (FERC Docket EC20-34)

The Montana Alberta Tie Line, which went into service in 2013, is a 230-kV merchant line that and connects power grids in the two jurisdictions. While the system has two-way capability, it was mostly designed to move wind-generated electricity from Montana to Alberta, and all of the capacity moving north is secured under long-term agreements. The Canadian portion of the 345-kilometer line stretches about 123 kilometers to a substation at Picture Butte in southern Alberta, owned by AltaLink Holdings LP, which is a separate Berkshire Hathaway Energy subsidiary. The U.S. portion of the line runs to Great Falls, Mont.