[4] As part of a settlement reached in December 2011 with the Sierra Club, the National Audubon Society, Audubon Arkansas and the Hempstead County Hunting Club, American Electric Power/SWEPCO agreed to close one of the 528-megawatt generating units at its J. Robert Welsh Power Plant in Texas by the end of 2016 and purchase 400 megawatts of renewable energy capacity by the end of 2014.

[6] American Electric Power/SWEPCO agreed to never install additional generating units at the plant or build another coal-fired facility within 30 miles.

To overcome material stress from the plant's high pressure and temperature, engineers used new nickel and chrome alloys in the boiler and its components.

[11] Emissions controls at the plant include selective catalytic reduction for nitrous oxide, flue-gas desulfurization for sulfur dioxide, activated carbon injection for mercury and pulse-jet fabric filter baghouse for particulate matter.

[12] In a report published in 2019, the Environmental Integrity Project found levels of lithium in groundwater near the plant are three times of safe limits.