This chart shows the number of Maryland residential electric accounts that switched to or from third-party suppliers, coming from or going to a utility company respectively (Potomac Edison, Baltimore Gas and Electric, Delmarva Power & Light, Potomac Electric Power). Data compiled by Laurel Peltier from Maryland Public Service Commission's monthly enrollment reports. The data for 2021 are incomplete due to the PSC's enrollment report for December 2021 being unavailable at the time of this article's publication.