©2003 PJM

North American Markets Status

APEx Seoul, Korea

October 29-31, 2006Kenneth W. Laughlin

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AESO

• Peak Load 9600 MW, December 2005• Postage Stamp Transmission Pricing

– No significant transmission constraints• Full Retail Access

– Regulated Rate Option available to small consumers

• Energy Only Market– No plans to implement capacity market

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California ISO

• Peak Load 50,270 MWs

• Zonal energy market with redispatch to manage congestion within zones

• Comprehensive market redesign in progress – expect to move to nodal pricing in 2007

• Resource adequacy requirement on load serving entities to demonstrate 115% of load can be met; capacity markets under discussion

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ERCOT

• Peak Load 62,400 MWs

• 85% of Texas; Not subject to FERC; 3 DC Ties

• 37,000 miles of Transmission

• Firm Transmission (PTP only)

• 77,000+ MW of Generation • Centralized registry for 5.9

million retail choice customers • Nodal pricing in 2009; energy

only

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MISO RTO

• Peak load 136,520 MWs

• Market opened 1 April 2005

• Full nodal real time and day-ahead energy markets

• Territory encompasses fifteen states and one Canadian province

• Simultaneously co-optimised energy & ancillary services markets under development

• No capacity market envisioned

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ISO New England

• Peak Load 28,000 MW

• Implemented nodal pricing in 2003

• Implemented wholesale markets in 1999

• Local Forward and real-time reserve markets

• New forward capacity market auction in February 2008 for capacity in June 2010

• Major new transmission projects completed or under construction

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New York ISO

• Peak Load 34,000 MWs

• Full nodal pricing with real time and day-ahead energy markets

• Installed capacity market with a demand curve

• Co-optimized energy and ancillary services markets—in both day-ahead and real-time

• Scarcity pricing for reserves

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Ontario Market Operator

• Peak Load 26,000 MWs

• 5 minute wholesale spot market, single market clearing price

• Design of future Day-Ahead Market currently being discussed with stakeholders

• Development of new generation underway via centralized contracting to allow the shutdown of all coal plants as soon as possible

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PJM

• Peak load 145,000 MWs

• Full nodal markets (real time and day-ahead)

• Integrated five companies into market area between 2002 and 2006.

• Developing a new capacity market

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SPP

• Peak Load 42,227 MW, July 2006

• Full nodal energy imbalance energy market expected to become operational in November 2006

• Transmission Services market

• No retail open access in footprint

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North American Markets

Peak Load Nodal pricing Retail Markets

Capacity market

AESO 9,600 No Yes Future

California ISO 50,270 2007 No under

discussion

ERCOT 62,400 future Yes No

MISO 136,520 2005 Partial No

ISO-NE 28,000 2003 Yes Yes. New under

development

NYISO 34,000 1999 Yes Yes. New under

development

Ontario Market OperatorIESO

26,000 No Yes Future

PJM 145,000 1998 Yes Yes. New under

development

SPP 42,227 2006 No Future