The new high-voltage power line, called the Big Eddy-Knight line, will help BPA move energy from east of the Cascade Mountains to homes and businesses in population centres west of the Cascades. It will provide transmission services to up to 4GW of wind-generating capacity.
Construction is tentatively scheduled to start the week of 19 September 2011.
BPA is currently embroiled in legal action with wind-farm owners in the Pacific Northwest region over nightly curtailments of their projects' electricity output. As of 13 July, a total of 97,557MWh of wind had been curtailed — 6.1% of the scheduled output.
The announcement of work on the Big Eddy-Knight line follows BPA saying in August that it was upgrading of its transmission links with California.