Estimates of the transmission buildout required in the US to reduce congestion and to bring renewable electric power to market have ranged from 19,000 to 50,000 miles of new transmission lines. The Brattle Group has estimated the total investment in transmission required between 2010 and 2030 to be on the order of $300 billion.
I have blogged about the Energy Policy Act of 2005 before. It has had far reaching implications for many energy-related sectors including nuclear power and the shale-gas industry. One of the most important provisions was to encourage expansion of the transmission grid in the U.S.
One of the specific measures of the bill required FERC to establish rules for incentive-based rates to encourage investment in transmission to reduce congestion. What this means is rules that allow utilities to set rates to recover the cost (plus a specified rate of return) of building new transmission capacity.
FERC Order 679 came into force in September 29, 2006 and established rules to encourage investment in transmission infrastructure to reduce transmission congestion. Among its provisons were full recovery of construction, pre-operations costs, and costs of abandoned facilities; accelerated depreciation; and a higher rate of return on equity for utilities that join and/or continue to be members of transmission organizations, such as regional transmission organizations (RTOs) and independent system operators (ISOs). The rule also streamlined procedures for the approval of incentives.
According to a recent analysis by the Transmission Hub, Order 679 is expected to lead to nearly $23 billion investment in electric transmission investment between 2012 and 2016. The estimated total from 2008 to 2016 could reach $36.2 billion. According to the report the companies with the highest projected investments are:
- Southern California Edison - $4.9 billion for 25 transmission projects.
- Dominion Resources - $2.9 billion for 30 projects
- PacificCorp - $2 billion for the Energy Gateway transmission expansion project
- Exelon - $2.1 billion for several projects including the Reliability Interregional Transmission Extension line (RITELine).
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