Deregulation numbers in Maryland
While neighboring Pennsylvania saw explosive growth when retail customers were first able to purchase electricity from competitive suppliers, customers in Maryland have switched to alternative suppliers at a much slower rote. Only 3% of residential customers had actually switched to a new supplier as of 2009, a paltry figure when compared to the near half of customers switching in Pennsylvania.
Late 2011 and 2012 began a dramatic upswing in residential electricity purchasing in Maryland however, with over 22% of customers having switched by mid-2012 (http://esm.versar.com/pprp/factbook/01MD_Power_Industry.htm). The direct cause behind this growth isn’t easy to pinpoint but great awareness of the availability of third party power providers probably played a major role in growth over the period.