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APX, NEPOOL Extend Agreement for Generation Information System (GIS)

APX Registry Supports Environmental Trading Markets and Verifies Retail Electric Supplier Compliance with Green Regulations

Santa Clara, Calif. - Aug. 1, 2006 - APX, Inc., a provider of energy market support systems and services for the electric power industry, announced today that the New England Power Pool (NEPOOL) has signed a five-year extension of the agreement for APX to operate and administer NEPOOL's Generation Information System ("GIS"). The GIS verifies and manages the Renewable Energy Certificates (RECs) that are the basis for environmental trading and investment incentives in the New England states, and monitors emissions of all generators selling power through ISO New England's market system.

Under the five year contract extension, APX will continue to provide program administration and operational support, as well as provide enhancements to the GIS platform and data center infrastructure.

"The NEPOOL Participants Committee unanimously supported the continued use of APX to operate and administer our GIS, which is a testament to the quality of services that the APX GIS team provides. The APX platform closely matches our needs and is a proven technology in use throughout North America. In addition, APX's support and responsiveness have been first rate," said Daniel Allegretti, Vice President Regulatory/Legislative Affairs for Constellation Energy Commodities Group and chair of the NEPOOL working group that negotiated the extension with APX. "APX has been an important partner for us, and they've earned our full confidence."

"As the clear market leader in REC and emission certificate systems in North America, we measure our value in terms of customer loyalty as well as the applicability of the APX Registry Solution to the needs of our customers," said APX Chairman and Chief Executive Officer, Tom Lewis. "We are proud to continue to deliver the APX Registry software and operational services to the New England Power Pool, and to be reconfirmed as the environmental registry platform of choice for NEPOOL customers."

Developed, administered and hosted by APX, the NEPOOL GIS began operation July 1, 2002 to help verify retail electric supplier compliance with various green power and environmental regulations. A web-based system, the NEPOOL GIS records the fuel sources, greenhouse gas (GHG) emissions and other attributes associated with generation and creates a unique, traceable digital certificate for every MWh generated within or imported into the ISO New England Control Area. Retail electric suppliers use the system's Certificates to report compliance with requirements set by New England states, including Renewable Portfolio Standards (RPS) and disclosure of fuel sources.

To date, the NEPOOL GIS has created and managed about 700 million Certificates. Over 290 market participants in Connecticut, Massachusetts, New Hampshire, Rhode Island, Vermont, Maine, and New York are currently using the GIS. Other implementations of the APX Registry Solution serve hundreds of other market participants in PJM (PJM GATS), ERCOT (Texas REC) and across the United States and Canada.

About APX Inc
APX is North America's leading provider of environmental registry solutions for markets in renewable energy and greenhouse gases, as well as corporate environmental management. APX technology is now the system of choice for every major renewable energy registry in North America, including the PJM and ERCOT markets. APX also provides technology, strategic consulting, and expert operational services to assist wholesale power market participants reduce costs and improve performance in power scheduling, settlement, market operations, and demand response programs. Clients include utilities, merchant companies, financial institutions, retail service providers, ISOs/RTOs, and other electricity market participants. A privately held company, APX is headquartered in Santa Clara, CA.

About NEPOOL
NEPOOL is a voluntary association of more than 290 participants in the New England bulk power system. NEPOOL advises ISO New England Inc. on the operation and administration of the New England transmission system and wholesale power markets in Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont. More information is available at www.iso-ne.com.

Contact:
APX Inc.
Reiner Musier,
617.699.0929
rmusier@apx.com
www.apx.com