Dayton Power & Light Company and Black & Veatch Announce Alliance for Air Quality Improvement Projects

Projects will use advanced technology to remove sulfur dioxide and oxides of mercury at Killen and Stuart coal-fired generating stations

Dayton, Ohio (May 3, 2005) – Dayton Power & Light Company (DP&L) and Black & Veatch Corporation today announced that they have formed an alliance to execute the next series of DP&L air quality improvement projects. These projects will remove sulfur dioxide and oxides of mercury at DP&L’s Killen and Stuart coal-fired generating stations, which consist of five (5) nominal 600 megawatt units. The new air quality systems will go into operation at the five units between mid-2007 and mid-2009.

The air quality projects will utilize the CT-121 scrubber technology licensed by Black & Veatch from Chiyoda Corporation of Japan. The advanced technology CT-121 flue gas desulfurization (FGD) process has demonstrated a sulfur dioxide removal efficiency rate as high as 99 percent. CT-121 has been proven to deliver consistently high performance and reliability rates at low operating costs in FGD plants worldwide.

Additionally DP&L and Black & Veatch will convert the four Stuart units to balanced draft for a safer boiler environment, and will add barge unloading and loading for FGD reagent and byproduct. The scrubber byproduct will be high-quality salable gypsum.

The new projects follow DP&L and Black & Veatch’s successful completion in June 2004 of a five-year project that installed selective catalytic reduction (SCR) units at Killen and Stuart. The SCR projects met all cost, schedule and performance targets, allowing DP&L to lower nitrous oxide emissions while serving the energy needs of the community.

About DPL
DPL Inc. (NYSE: DPL) is a regional electric energy and utility company. DPL’s principal subsidiaries include The Dayton Power and Light Company (DP&L); DPL Energy, LLC (DPLE); and DPL Energy Resources, Inc. (DPLER). DP&L, a regulated electric utility, provides service to over 500,000 retail customers in West Central Ohio; DPLE engages in the operation of merchant peaking generation facilities; and DPLER is a competitive retail electric supplier in Ohio, selling to major governmental, industrial, and commercial customers. DPL, through its subsidiaries, owns and operates approximately 4,400 megawatts of generation capacity, of which 2,800 megawatts are low cost coal-fired units and 1,600 megawatts are natural gas fired peaking units. Further information can be found at www.dplinc.com.

About Black & Veatch
Black & Veatch Corporation is a leading global engineering, consulting and construction company specializing in infrastructure development in the fields of energy, water and information. Founded in 1915, Black & Veatch serves its clients with conceptual and preliminary engineering services, engineering design, procurement, construction, financial management, asset management, information technology, environmental, security design and consulting, and management consulting services. The employee-owned company has more than 90 offices worldwide. Black & Veatch is ranked on the Forbes “500 Largest Private Companies in the U.S.” listing for 2004. The company’s Web site address is www.bv.com.

For more information, please contact:
Linda Heil
Communications Specialist
(913) 458-4629
Heilla@bv.com

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