INVESTOR NEWS

ESCO Announces TWACS(R) System Acceptance at PPL Electric Utilities

ST. LOUIS, April 26 /PRNewswire-FirstCall/ -- ESCO Technologies Inc. (NYSE: ESE) announced today that PPL Electric Utilities formally accepted DCSI's TWACS(R) Advanced Metering System earlier this month. This was the culmination of a three-year, system-wide deployment of approximately 1.3 million customer endpoints. The acceptance test was an exhaustive verification of the system performance with more than 160 individual tests completed.

"The DCSI system has met and exceeded our expectations in many ways," said PPL Project Director Bernie Bujnowski. "It was a highly successful project - on time, on budget, and is meeting the requirements of the business case. This tool, as expected, has virtually eliminated estimated bills by automating the meter-reading process and has improved other business processes through the ability to constantly communicate with the meter. What was unexpected is how the business embraced the tool and applied it in new and creative applications. Two examples of unexpected benefits are the system use in assessing power restoration after major outages caused by storms and using detailed data from the system to address and resolve customer billing concerns. I am confident that we will continue to find additional uses for the system in the future."

Vic Richey, Chairman and Chief Executive Officer of ESCO, commented, "The successful deployment of DCSI's TWACS system at PPL Electric Utilities is a milestone for our company. We believe the success of this program validates the business case for large-scale, advanced-metering programs utilizing DCSI's two-way, fixed-network system. This program confirmed that DCSI's TWACS power line solution can reliably deliver advanced metering data, including interval data, from well over a million electric meters. This performance will ensure that DCSI continues to play a pivotal role among utilities that seek proven solutions for improving customer satisfaction and initiating Demand Response programs. We look forward to working with additional customers on similar projects."

ESCO, headquartered in St. Louis, is a leading supplier of engineered filtration products to the process, health care and transportation markets worldwide. In addition, the Company markets proprietary, special purpose communications systems and is the industry leader in RF shielding and EMC test products.

PPL Electric Utilities Corporation is a subsidiary of PPL Corporation (NYSE: PPL). Headquartered in Allentown, Pa., PPL controls more than 12,000 megawatts of generating capacity in the United States, sells energy in key U.S. markets and delivers electricity to nearly 5 million customers in Pennsylvania, the United Kingdom and Latin America. More information is available at http://www.pplweb.com .

SOURCE ESCO Technologies Inc.

CONTACT:
Patricia K. Moore
Director, Investor Relations
ESCO Technologies Inc.
314-213-7277

For media inquiries
David P. Garino
for ESCO
314-982-0551