Economically Efficient Transmission Design Processes for a 20% Wind Energy Scenario

for the U.S. Eastern Interconnection

Dale Osborn

10:30 AM Friday June 12

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NREL Eastern Wind Integration Transmission Study Data

• Transmission planning to date has been focused on meeting National Electric Reliability Corp. reliability standards. Deterministic criteria based on the loss of lines and resources ( generators).– Minimum capital for transmission– Not necessarily the minimum cost to the customer

• Energy markets added constraints that allow mainly gas generation to provide reliable service by relieving constraints by locating in higher priced areas

• Wind energy and other types of generation generally need transmission to gain access to higher priced areas and be able to compete.

Reliability (Capacity) vs. Economic Transmission Expansion

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20% Wind Energy Scenario

Without and With the JCSP

Overlay

Annual Generator Location Marginal Prices

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JCSP PROMOD outputs - July 22, 2008

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Potential BenefitsAdjusted Production Costs

$35B/Yr

PJM14%

MISO10%

SERCNI25%

ISO-NE10%

NYISO13%

E_CAN12%

IMO3%

MHEB3%

SPP4%

TVASUB6%

MAPP0%

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Joint Coordinated System Plan Overlay

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20% Wind Energy Scenario

Without and With the JCSP

Overlay

Annual Generator Location Marginal Prices

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