Energy Leaders to Address AspenWorld 2002 on Improved Power Plant and Fleet Economic Performance

September 5, 2002

CAMBRIDGE, Mass., Sep 5, 2002 /PRNewswire-FirstCall via COMTEX/ --

Senior management from the world's top power and utility companies discuss trends for efficiency and improved profitability through technology innovation

Aspen Technology, Inc. (Nasdaq: AZPN) today announced additions to its distinguished roster of power industry speakers at AspenWorld 2002, the process industry's leading conference taking place Oct. 27 through Nov. 1 in Washington, DC. Among them are Joel Harris, plant performance manager of Southern Company and Andrew Peyman, manager for asset management for TXU Energy in the United Kingdom. Jack Welch, the former Chairman and CEO of General Electric, will present the conference keynote address to 2,500 executives attending from over 50 countries.

(Photo: http://www.newscom.com/cgi-bin/prnh/20000811/ASPENLOGO )

At AspenWorld 2002, leaders from the power and utilities industry will share their insights on the latest trends in the field, where deregulation has produced the need for access to real-time information. Mr. Harris will address "Implementation and Use of a Standard Operational Information System for Utility Power Plants." Mr. Peyman will discuss fleet economic dispatch optimization and unit commitment in a presentation entitled, "Scheduling Power in a Real-Time Environment". In addition, noted industry analyst Bud Grant from ARC Research will participate in the program.

"Power industry executives attending AspenWorld 2002 will learn about the latest strategies for improving the way they run their businesses," said Larry Evans, Chairman and CEO of AspenTech. "The senior level participants at AspenWorld 2002 will offer fresh ideas regarding how to cope with the changes their customer companies make during critical energy purchases, as well as how they operate and dispatch their own assets."

The power and utilities track presentations are part of more than 400 presentations being given in over 80 sessions throughout the conference. More information on AspenWorld 2002 and its presenters is available at https://www.aspenworld2002.com/.

About AspenTech

Aspen Technology, Inc. is a leading supplier of enterprise software to the process industries, enabling its customers to increase their margins and optimize their business performance. AspenTech's engineering solutions, incorporating Hyprotech's technologies, help companies design and improve their plants and processes, maximizing returns throughout their operational life. AspenTech's supply chain manufacturing solutions allow companies to run their plants and supply chain more profitably, from customer demand through to the delivery of the finished product. Over 1,200 leading companies rely on AspenTech's software every day to drive improvements across their most important engineering and operational processes. AspenTech's customers include: Air Liquide, AstraZeneca, Bayer, BASF, BP, ChevronTexaco, Dow Chemical, DuPont, ExxonMobil, GlaxoSmithKline, Lyondell Equistar, Merck, Mitsubishi Chemical, Shell, Southern Company, TXU Energy and Unilever. For more information, visit www.aspentech.com.

Certain paragraphs of this press release contain forward-looking statements for purposes of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. For this purpose, any statement using the term "will," "should," "could," "anticipates," "believes" or a comparable term is a forward-looking statement. Actual results may vary significantly from AspenTech's expectations based on a number of risks and uncertainties, including: AspenTech's lengthy sales cycle which makes it difficult to predict quarterly operating results; fluctuations in AspenTech's quarterly operating results; AspenTech's dependence on customers in the cyclical chemicals, petrochemicals and petroleum industries; AspenTech's need to hire additional qualified personnel and its dependence on key current employees; intense competition; AspenTech's dependence on systems integrators and other strategic partners; changes in the market for e-business solutions for AspenTech's customers; increased governmental regulation and taxation of e-commerce and the Internet; information security and privacy concerns relating to e-commerce; and other risk factors described from time to time in AspenTech's periodic reports and registration statements filed with the Securities and Exchange Commission. AspenTech cannot guarantee any future results, levels of activity, performance, or achievements. Moreover, neither AspenTech nor anyone else assumes responsibility for the accuracy and completeness of any forward-looking statements. AspenTech undertakes no obligation to update any of the forward-looking statements after the date of this press release.

AspenTech and the aspen leaf logo are trademarks of Aspen Technology, Inc., Cambridge, Mass.

    Contacts:

    For Media:
     Peter Watt
     Aspen Technology, Inc.
     +44 1223 819-752
     peter.watt@aspentech.com

     Carin Warner
     Warner Communications
     (978) 526-1960
     carin@warnerpr.com

    For Investors:
     Joshua Young
     Aspen Technology, Inc.
     (617) 949-1274
     joshua.young@aspentech.com

SOURCE Aspen Technology, Inc.

CONTACT:
Media, Peter Watt of Aspen Technology, Inc., +44 1223 819-752,
peter.watt@aspentech.com; or Carin Warner of Warner Communications,
+1-978-526-1960, carin@warnerpr.com; or Investors, Joshua Young of Aspen
Technology, Inc., +1-617-949-1274, joshua.young@aspentech.com
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URL: http://www.aspentech.com
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