Pacific Power plans to invest $80 million to upgrade its transmission lines in Josephine and Jackson counties, Ore., and improve service reliability in the southern part of the state.

The Berkshire Hathaway Energy subsidiary plans to construct an 18-mile, 230-kV transmission line from its existing Grants Pass substation in Josephine County to a new substation in Jackson County, according to a March 28 news release.

Pacific Power said it has filed an application for land use to build the new substation. Aside from that, the project will be reviewed by the U.S. Bureau of Land Management, the U.S. Army Corps of Engineers, the Oregon Department of State Lands, the Oregon Department of Environmental Quality and Josephine and Jackson counties.

The permitting phase is expected to last until mid-July. The company expects to begin construction in 2019 and energize the project by late 2020.

PacifiCorp does business as Pacific Power in Oregon.