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LEXINGTON, MA. and DALLAS, TX., June 20, 2000 - Excelergy Corporation, a provider of business-to-business technology for the retail energy industry, today announced its new, rapidly deployable Internet energy portal that is dedicated to meeting the changing needs of utilities and energy companies.

Energy marketplace enables energy companies to build a customized energy portal that can be fully personalized by their business, municipal and residential customers. The new energy portal allows energy companies to Offer a wide variety of energy-related information and services over the Internet to end-use customers, similar to the personalizable portal applications popular in the mass consumer market.

Sempra Energy Trading, a subsidiary of Fortune 500 energy services company Sempra Energy (NYSE: SRE) and one of the nation's leading wholesale energy trading and marketing companies, will use Energy marketplace to launch a custom energy portal service for its customers. "The portal provides an innovative combination of third-party web applications with our own internal data applications for our customers," said David Messer, president of Sempra Energy Trading. "We chose this solution because these unique, value-added services will allow us to attract and serve customers with a convenient and efficient means of communication."

While still allowing end-use customers to choose a different energy supplier, Energymarketplace also enables energy companies to Offer their customers a wide variety of products and services - such as energy news, weather, energy pricing, asset management, presentation of energy usage data, and account review - from a menu of choices.

to further expand the range of offerings available through its Energymarketplace portal, Excelergy has formed alliances with leading Internet-based energy software companies such as Silicon Energy, to provide Silicon Energy's web-based Enterprise Energy Management System (EEM), and EnergyGuide.com, to provide residential commodity shopping, energy audits and ENERGYgear, which allows visitors to purchase energy-efficient products online.

Energymarketplace can be designed to capture a company's corporate look and feel for seamless integration. Energy companies' end users then can further personalize the site by creating their own "MyEnergy" page. This functionality allows users to rearrange the web site's presentation and layout according to their personal preferences. In essence, Energymarketplace gives energy companies the ability to create their own web page.

"Energymarketplace meets the changing needs of the unfolding deregulated energy industry," said Philippe Frangules, vice president of e-commerce for Excelergy. "This highly personalized, value-added approach to Internet business is a powerful tool for market participants to proactively serve their customers."

About Excelergy
Excelergy offers business-to-business technology to the deregulating retail energy market. The company's current product offerings include Excelergy ABP™ 3000 customer relationship management and billing software, the Excelergy eXACT™ family of business-to-business transaction management solutions, and the web-based Energy Marketplace customer satisfaction and interaction solution. Headquartered in Lexington, MA, Excelergy also has offices in Santa Monica, CA and Atlanta, GA.

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