[1][2] The plant is named after Dolphus M. Grainger, a Horry County native who pushed for rural electrification.

[2] Its cooling source came from the nearby Waccamaw River and outlet to Lake Busbee which was created for the power plant.

[3] In 2004, Grainger along with several other coal plants owned by Santee Cooper were found to be in violation of the Clean Air Act.

As a part of the settlement, Santee Cooper had to install LO-NOx burners to reduce nitrogen oxide (NOx) emissions at Grainger.

[4] Grainger was retired in October 2012 by Santee Cooper as it was too costly to comply with the United States Environmental Protection Agency's (EPA) Mercury and Air Toxics Standard (MATS).