Leading North American Energy Company Upgrades to aspenONE® V7

Business Wire, April 20, 2009

AspenTech Helps Customer Integrate Engineering with Operations to Achieve Operational Excellence Objectives

BURLINGTON, Mass. -- Aspen Technology, Inc. (OTC: AZPN.PK), a leading provider of software and services to the process industries, today announced that EPCO, Inc., has upgraded to aspenONE V7.

• EPCO, a leading North American provider of midstream energy services to producers and consumers of natural gas, crude oil, natural gas liquids and petrochemicals, is adopting the aspenONE V7 Engineering suite to better align engineering and operations processes in support of its operational excellence objectives.
• EPCO, Inc. chose aspenONE V7 to support the company’s growth strategy, lower operating costs, improve efficiency and productivity, and decrease energy consumption.
• EPCO was drawn to several new innovations in aspenONE V7, including advanced cost estimation, which enables engineers to determine the feasibility of capital projects and business opportunities during conceptual design.
• EPCO will also use the Aspen Simulation Workbook within aspenONE V7, which brings the benefits of aspenONE to a wider range of users throughout the company via a user-friendly Microsoft Excel interface.
• AspenTech’s token-based licensing model helps EPCO better meet their changing business needs by providing the flexibility to use the right software at the right time.

Supporting Quotes:

Kevin Bodenhamer, Vice President of Engineering, EPCO, Inc.

“With our commitment to growing the partnership’s comprehensive network of midstream assets, we are always looking for new ways to manage our increased capacity, new greenfield opportunities, and current debottlenecking challenges. AspenTech’s solutions have played an important role in modeling, optimization, and new projects within our engineering organization for the past few years. We’re excited to implement aspenONE V7 and look forward to utilizing its many new engineering and usability innovations, as well as the unique token-based licensing model. The new system will improve our ability to successfully navigate the turbulent economy by rapidly addressing changing business demands from using the right software at the right time, while optimizing the value of our IT investments.”

Blair Wheeler, Senior Vice President, Marketing, AspenTech

“EPCO is a great example of how leading energy companies are taking advantage of AspenTech process optimization across both engineering and operations. Using aspenONE V7, EPCO can implement engineering best practices to lower their costs, increase productivity, and improve visibility into operations.”

Supporting Resources:

Links to more information:

• About aspenONE Engineering solutions
• About aspenONE V7
• What the Industry is Saying about aspenONE V7

About Enterprise Products Partners L.P.

EPCO, Inc. is one of the largest publicly traded partnerships and is a leading North American provider of midstream energy services to producers and consumers of natural gas, NGLs, crude oil and petrochemicals. EPCO transports natural gas, NGLs, crude oil and petrochemicals through more than 46,000 miles of onshore and offshore pipelines. Services include natural gas transportation, gathering, processing and storage; NGL fractionation (or separation), transportation, storage, and import and export terminaling; crude oil transportation and offshore production platform services. For more information on EPCO, Inc., visit www.epco.com.

About AspenTech

AspenTech is a leading supplier of software that optimizes process manufacturing – including oil and gas, petroleum, chemicals, pharmaceuticals 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 rely on AspenTech to achieve their operational excellence goals, visit www.aspentech.com.

© 2009 Aspen Technology, Inc. AspenTech, aspenONE, the Aspen leaf logo and the 7 Best Practices of Engineering Excellence are trademarks of Aspen Technology, Inc. All rights reserved. All other trademarks are property of their respective owners.