Portfolio of New EHV Transmission Projects
Approved
April 29, 2009, LITTLE ROCK, ARKANSAS
The Southwest Power Pool, Inc. (SPP) Regional State Committee and Board of
Directors/Members Committee approved a long-awaited group of extra high
voltage economic transmission expansion upgrade projects totaling over $700
million, to be funded by the application of Federal Energy Regulatory
Commission-approved “postage stamp” rates to SPP’s transmission-owning
members across the region. The benefits of this group of transmission
upgrades have been demonstrated by model analysis to outweigh the costs,
thus achieving a “balanced portfolio” of projects. The overall cost of
generation to serve SPP’s load should be reduced by an amount exceeding
investment in the grid. This portfolio of projects will also reduce
congestion on the SPP transmission system, and may provide other benefits
such as increased reliability and lower end-use consumer costs.
According to SPP President and CEO Nick Brown, “Cost allocation for economic
upgrades has always been a barrier to construction. Historically, it has
been challenging for one project sponsor to bear all upfront costs of
building new extra high voltage transmission lines that provide benefits of
varying degrees to many market participants. Allocating costs of these
mutually-beneficial projects across the region will spur transmission
construction, which is one of the goals of the Federal Energy Regulatory
Commission and the new Obama administration.”
Under the new balanced portfolio approach, SPP evaluates the benefits of a
group of economic upgrades rather than evaluating individual upgrades on a
project-by-project basis. A portfolio approach alleviates potential disputes
that may arise from the construction of a single project that may benefit
one zone but not others.
The balanced portfolio includes five new 345 kV transmission lines, a 345 kV
transformer, and a new connection between two existing 345 kV lines. Out of
over 50 transmission projects analyzed by SPP, the following projects met
specific requirements of the SPP Open Access Transmission Tariff for
achieving regional benefits greater than costs. (The models determined
cost/benefits based on simulated production cost requirements among
utilities in SPP’s footprint.)
- The 250 mile “Woodward -Tuco” line between Hale County, Texas (north of
Abernathy) and Woodward, Oklahoma will cost $229 million.
- The 215 mile “Spearville-Knoll-Axtell” line between Spearville, Kansas
(east of Dodge City); Hays County, Kansas; and Axtell, Nebraska will cost
$237 million.
- The 100 mile “Seminole-Muskogee” line between Seminole County and
Muskogee, Oklahoma will cost $131 million.
- The 36 mile “Sooner-Cleveland” line between Sooner Lake in Noble County,
Oklahoma and Cleveland, Oklahoma will cost $34 million.
- The 30 mile “Iatan-Nashua” line between Iatan and Nashua, Missouri (north
of Kansas City) will cost $54 million.
- The Anadarko Transformer in Anadarko, Oklahoma will cost $8 million.
- The Swissvale-Stilwell Tap near Gardner, Kansas will cost $2 million.
- Notifications to construct will be issued in the coming weeks to
transmission owners identified by SPP’s transmission planners.
Les Dillahunty, SPP Senior Vice President of Engineering and Regulatory
Policy, states, “The balanced portfolio projects will enhance access to all
types of generation, including the vast wind potential in the SPP region.
These transmission upgrades will be the beginning of a wind-collector grid
that will enable the collection, use, and possible export of renewable
energy beyond SPP.”
According to Regional State Committee President David King of the New Mexico
Public Regulation Commission, “Creation of the balanced portfolio process
was a collaborative, consensus-building effort among utility regulators in
six states, SPP, its members, and stakeholders to create a reasonable group
of economic upgrades that benefit everyone. Enhancing the regional grid
today will provide economic development, increase the availability of
renewable energy, and prepare us for future load growth. Today’s economic
projects become tomorrow’s reliability requirements.”
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Southwest Power Pool, Inc. is a group of 54 members serving more than five
million customers across nine states of the Eastern Interconnection.
Membership is comprised of investor-owned utilities, municipal systems,
generation and transmission cooperatives, state authorities, wholesale
generators, power marketers, and independent transmission companies. SPP's
footprint includes 26 balancing authorities, 47,000 miles of transmission
lines, and 370,000 square miles of service territory.
SPP was a founding member of the North American Electric Reliability
Corporation in 1968, and was designated by the Federal Energy Regulatory
Commission as a Regional Transmission Organization (RTO) in 2004 and a
Regional Entity (RE) in 2007. As an RTO, SPP ensures reliable supplies of
power, adequate transmission infrastructure, and competitive wholesale
prices of electricity. The SPP RE oversees compliance enforcement and
reliability standards development
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