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Reliance Implements aspenONE(TM) Real-Time Optimization Solution at World's Largest FCC Unit

Leading Indian petroleum and chemicals producer awards project at Jamnagar refinery to AspenTech's Professional Services group

CAMBRIDGE, Mass.--(BUSINESS WIRE)--May 30, 2006-- Aspen Technology, Inc. (NASDAQ: AZPN), the leading provider of software and services to the process industries, today announced that Reliance Industries Limited, India's largest petroleum and chemicals producer, has signed a new agreement to implement the aspenONE real-time optimization solution at its Jamnagar refinery. The solution will be applied to the refinery's fluid catalytic cracking (FCC) unit - the world's largest single FCC unit - in a project to be carried out by AspenTech's Professional Services group.

The aspenONE real-time optimization solution will enable the Jamnagar facility, which processes a frequently-changing crude slate, to improve its FCC unit margins and thus improve overall refinery profitability. As crude qualities and product economics change, the solution automatically considers these variables, as well as the operating constraints of the FCC unit, to immediately recalculate the most profitable operating conditions for the refinery.

"Reliance is recognized for the productivity and energy efficiency of its Jamnagar refinery, and we are delighted that it has chosen our aspenONE real-time optimization solution to further improve refinery profitability," said Blair Wheeler, Senior Vice President, AspenTech. "By awarding the implementation project to AspenTech's Professional Services group, Reliance will be able to benefit from our extensive experience in successfully completing closed-loop optimization projects at many major sites worldwide. The proven program management methodology used by our team is designed to minimize risk while simultaneously supporting the delivery of sustained value for our clients."

AspenTech's real-time optimization solution is built on an on-line rigorous process model that is constantly updated from operating data. The solution consists of a combination of industry-leading applications, including Aspen Plus(R), Aspen Plus Optimizer(TM) and Aspen FCC(R), which are capable of optimizing large, complex FCC units in real time, both safely and reliably. The selection of the solution by Reliance follows its standardization on AspenTech's simulation technology in June 2005.

About Reliance

Reliance Industries Limited (RIL) is India's largest private sector company with turnover of over Rs73,000 crore (US$ 16.7 billion). RIL's activities span exploration and production of oil and gas, refining and marketing, petrochemicals (polyester, polymers, and intermediates), and textiles. RIL exports its products to more than 100 countries worldwide. For additional information about RIL, please visit

About AspenTech

Aspen Technology, Inc. provides industry-leading software and professional services that help process companies improve efficiency and profitability by enabling them to model, manage and control their operations. AspenTech's integrated aspenONE(TM) solutions are aligned with the key industry business processes, providing manufacturers the capabilities they need to optimize operational performance, make real-time decisions and synchronize the plant and supply chain. Over 1,500 leading companies already rely on AspenTech's software, including Bayer, BASF, BP, Chevron Corporation, DuPont, ExxonMobil, Fluor, GlaxoSmithKline, Sanofi-Aventis, Shell, and Total. For more information, visit

This press release may contain forward-looking statements for purposes of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Actual results may vary significantly from AspenTech's expectations based on a number of risks and uncertainties, including, without limitation: AspenTech's plan to improve operational performance may not be implemented effectively; AspenTech has identified material weaknesses in its internal controls with respect to software license revenue recognition and other matters, that, if not remedied effectively, could result in material misstatements; risks around securities litigation and investigations; AspenTech's lengthy sales cycle 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; the possibility of new accounting standards or the interpretation of existing accounting standards affecting our financial results; AspenTech's ability to raise additional capital as required; intense competition; AspenTech's need to develop and market products successfully; reliance on relationships with strategic partners; challenges associated with international operations; and other risk factors described from time to time in AspenTech's periodic reports filed with the Securities and Exchange Commission. AspenTech cannot guarantee any future results, levels of activity, performance, or achievements. AspenTech expressly disclaims any current intention to update forward-looking statements after the date of this press release.

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

Aspen Technology, Inc.
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