Regional Planning Update
May 26, 2010
Wisconsin Public Utility Institute
Introduction
• Traditionally, electric transmission system built to
move native generation to native load.
• With the advent of Regional Transmission
Organizations and markets, power is moved much
longer distances to provide the most efficient
dispatch of energy, changing the way we plan the
transmission system
• The rise of renewable sources of energy,
particularly wind, has also changed plans for the
transmission system
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Upper Midwest Transmission
Development Initiative
• Consortium of Public Service Commissions and
Governors
– Begun approximately 18 months ago
• Objective: to determine the transmission system
that would be needed to allow WI, MN, IA, ND,
and SD to meet their renewable energy standards
• Midwest Independent System Operator developed
transmission plans that would allow the
movement of 15,000 and 25,000 MWs of wind
– Numerous plans were developed at 345 kV and 765 kV
• Plans and transmission owner input are being
reviewed by UMTDI group
RGOS Indicative Plan
developed for UMTDI
From 8/27/09 RGOS TRG posted material
Regional Generation Outlet Study
• The objective of MISO’s Regional Generation Outlet
Study (RGOS) is to develop transmission needed to
meet state renewable requirements in the MISO
footprint.
• RGOS Phase I focused on identifying transmission
needed to meet RPSs in WI, MN, IA and IL.
– RGOS I is being used by the Upper Midwest
Transmission Development Initiative (WI, MN, IA, ND
and SD)
– Two levels of wind – 28,000 and 34,000 MWs
• RGOS Phase II considering a larger footprint.
– Three transmission designs
– Final report in October 2010
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Regional Generation Outlet Study
RGOS Wind Zones
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Cross Border Top
Congested Flowgate Study
• Study being done by the Midwest ISO and
PJM Regional Transmission Organization to
study market issues
• There is increasing market congestion in the
south Lake Michigan area.
– Power cannot move efficiently due to constraints
on the transmission system, increasing energy
costs
• Study will determine what transmission is
needed to alleviate constraints
• Study results expected this Fall
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Locational Marginal Energy Prices
ATC and Neighboring Hubs
November 2008 – October 2009
MISO
Minnesota and
Illinois Hubs
lower than ATC
MN $29
ATC
$30
MI $33
NI $32
IL $29
(MISO $31)
*
PJM N.
Illinois Hub
higher than
ATC
Cross Border Top
Congested Flowgate Study
Candidate Flowgates
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SMARTransmission Study
• The SMARTransmission Study is a comprehensive
study of the transmission needed in the Upper
Midwest to support renewable energy development.
• ATC and Xcel are among a group of transmission
owners in Midwest ISO and PJM sponsoring the study.
• Analysis is underway and the study will be done in two
phases:
– Phase I: Identifying the Alternatives (reliability)
– Phase II: Economic analysis
• Phase I is complete
– Eight initial designs were reduced to two for further
analysis
• Phase II will be done this summer
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SMARTransmission Study
Alternative #2 is estimated to cost $23.7 billion.
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SMARTransmission Study
Alternative #5 is estimated to cost $25.6 billion.
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