Power Plant Investments

DP&L has invested millions to protect our environment and comply with regulations.

Flue Gas Desulfurization (FGD)

In 2008, we completed the final stage of a $600 million investment to install FGDs on 3,000 megawatts of coal-fired generation at Killen and Stuart Station power plants.

The FGDs:

  • reduce sulfur dioxide (SO2) emissions by approximately 95%
  • help us comply with environmental regulations
  • capture significant mercury emissions (in conjunction with DP&L's existing electrostatic precipitators)

Commercial grade gypsum is a byproduct at both Killen and Stuart Stations.

Selective Catalytic Reduction (SCR)

In 2004, DP&L invested $175 million in Selective Catalytic Reduction (SCR) equipment to reduce nitrogen oxide (NOx) emissions.

SCR equipment has reduced DP&L's NOx emissions by over 50%.

  • Killen Station - approximately 65% reduction
  • Stuart Station - approximately 80% reduction

Electrostatic Precipitators (ESPs)

ESPs remove more than 99% of the fly ash coming from our boilers at these power plants:

  • Hutchings Station
  • Killen Station
  • Stuart Station

Hutchings Station

Uses low-sulfur coal to ensure that sulfur dioxide (SO2) emissions are minimal.

In 2006, low-nitrogen oxide (NOx) burners and over-fire air were installed on four boilers. Since then, NOx emission rates have been reduced by approximately 50% on a year-round basis.

Combustion Turbines

The combustion turbines at the Tait and Montpelier Stations use natural gas for fuel.

Sulfur dioxide (SO2) and particulate matter emissions are at trace levels.

Dry low-nitrogen oxide (NOx) burners or water injection are used to reduce NOx emissions. This technology yields the lowest levels of NOx emissions in the DP&L system.

The combustion turbines use small quantities of well water. There is no withdrawal from or discharge to nearby streams, other than clean storm water flows during rain events.

Water Sampling

We work to protect the Great Miami and Ohio Rivers with frequent sampling. Compliance with Ohio Environmental Protection Agency laws is very important to DP&L.