[2] In the 1980s, Stuart was an early adopter of the prompt gamma neutron activation analysis (PGNAA), a coal analyzer, that increased on-line reliability for the plant.

Stuart along with its sister plant Killen Station due to economic and environmental challenges in an agreement with the Sierra Club and several unnamed parties.

[10] During construction of Unit 4, a cooling tower was commissioned by Cincinnati Gas and Electric (CG&E) (a forerunner of Duke Energy) in order to meet pollution control mandates set by the State of Ohio.

[3] Stuart was the test site for the Low-NOx Cell Burner (LNCB) designed by Babcock & Wilcox.

[12] Each unit at Stuart were retrofitted with selective catalytic reduction (SCR) systems between 2003 and 2004 by Black & Veatch.

The SCRs were installed to comply with the Clean Air Act's 1990 amendments and Ohio's NOx State Implementation Plan (SIP).

[13] Flue-gas desulfurization (FGD) equipment, designed by Black & Veatch with assistance from the Chiyoda Corporation was installed at J.M.

[22] As DP&L looked to expand its fly ash disposal areas in the 1990s, they funded a study to determine the archaeology resources of the Greenlee Tract.

[22][24] The site of Stuart Station also included a small cemetery with the graves of five pioneer families of Adams County - Bradford, Ellis, Grimes, Kimble, and Moore.