September marked the second consecutive month to see a lack of transmission projects entering service.
According to FERC’s monthly infrastructure update released Oct. 18, no new projects were completed, mirroring the amount of activity in September 2011.
For the January to Sept. 30 period, 1,183.9 miles of transmission line have entered service, compared to 1,707.8 line miles for the entire year last year.
FERC also updated its numbers from its August infrastructure update, in which it said the January to August period had seen 953.9 miles of transmission line enter service, compared to 1,687.8 miles of line for the January to December 2011 period.
Of the 1,183.9 miles to be completed by Sept. 30, 654.8 miles were 345-kV, 359 miles were 230-kV and below and 170.1 miles were 500-kV.
The commission also updated its estimate for proposed transmission projects that have a high probability of completion by September 2014. Of the 21,842.4 miles proposed, 11,342.7 miles have a high probability of entering service.
Of the 11,342.7 miles, 8,015.5 miles are 345-kV, 1,862 are 500-kV and 1,465.2 miles are 230-kV and below.
The majority of new projects proposed to be complete by September 2014 are located in the Western Electricity Coordinating Council (WECC), while the majority of projects expected to be complete are in the Texas Reliability Entity (TRE) region.
While no new lines were completed, some projects moved forward. NSTAR started construction on the $106m Carver to Plymouth project, a 26-mile 345-kV line that is part of the Lower SEMA upgrade. The project is scheduled for completion by June 2013.
The Electric Reliability Council of Texas (ERCOT) board approved $57m of transmission projects in south Texas, including the 138-kV Tilden to Folwerton to Reveille transmission line. The projects will support the Eagle Ford Shale area, which has seen considerable load growth as a result of oil and gas exploration and production.
Gateway West is a proposed line between Glenrock, Wyo., and Melba, Idaho, that would include 300 miles of 230-kV lines and 800 miles of 500-kV lines. It is intended to alleviate capacity constraints in the region.