Executive VP Antonio Pietri to Participate in Industry Panel on Implications for Greenhouse Gas Regulations

Burlington, Mass - Aspen Technology, Inc. (NASDAQ: AZPN), a leading provider of software and services to the process industries, today announced it will sponsor and participate in CERAWeek 2010 – the premier global energy industry conference – March 8-12 in Houston. AspenTech is sponsoring the CERAWeek Global Oil Summit, and AspenTech Executive Vice President Antonio Pietri is one of the industry experts speaking at CERAWeek.

• For the third consecutive year, AspenTech will be one of three exclusive sponsors of the CERAWeek Global Oil Summit, along with IBM and PriceWaterhouseCoopers. The invitation-only senior executive event will be held on Monday, March 8.
• On Tuesday, March 9, the kickoff "Oil Day" of CERAWeek, AspenTech's Pietri will participate with executives from ConocoPhillips, Chevron and IHS CERA on a panel examining "Implications of Green House Gas Reporting for the Oil Industry."
• Nearly 2,200 energy and power executives, policymakers and financial and technology leaders from more than 55 countries will meet at CERAWeek to discuss topics such as energy demand, climate change policies, energy markets and strategies, as well as the impact of new technologies in the economic recovery.
• Speakers during the CERAWeek Executive Summit and Conference include senior executives from the largest energy companies in the world, as well as industry and government leaders from the Brookings Institution; the International Energy Agency, the US Department of Economic, Energy, and Agricultural Affairs, and the MIT Sloan School of Management.
• AspenTech's aspenONE process optimization software is used by the world's largest energy companies. From implementing leading energy management practices to addressing the impact of carbon emissions, AspenTech customers are better-equipped to improve decision making and drive down costs across process manufacturing operations.

Supporting Quote:
Antonio Pietri, Executive Vice President, Field Operations, AspenTech "As energy companies continue to operate in uncertain times, those that have optimized their operations are best prepared to capture opportunity in the days ahead. AspenTech's customers are industry leaders who employ these best practices and many of them come to CERAWeek to share their insights. We are proud to continue our support of the CERAWeek Executive Summit and Conference, and look forward to helping drive discussion about how the industry can create new opportunities to drive economic growth."

Supporting Resources:
Links to more information:

• CERAWeek 2010
• aspenONE for Exploration & Production
• aspenONE for Refining & Marketing
• aspenONE for Power & Utilities
• Follow AspenTech on Twitter

About AspenTech
AspenTech is a leading supplier of software that optimizes process manufacturing – for energy, chemicals, pharmaceuticals, engineering and construction, and other industries that manufacture and produce products from a chemical process. With integrated aspenONE solutions, process manufacturers can implement best practices for optimizing their engineering,manufacturing and supply chain operations. As a result, AspenTech customers are better able to increase capacity, improve margins, reduce costs and become more energy efficient. To see how the world's leading process manufacturers relyon AspenTech to achieve their operational excellence goals, visit www.aspentech.com.