D.C. Code § 34-207
The term "electric company" when used in this subtitle includes every corporation, company, association, joint-stock company or association, partnership, or person and doing business in the District of Columbia, their lessees, trustees, or receivers, appointed by any court whatsoever, physically transmitting or distributing electricity in the District of Columbia to retail electric customers. The term excludes any building owner, lessee, or manager who, respectively, owns, leases, or manages, the internal distribution system serving the building and who supplies electricity and other related electricity services solely to occupants of the building for use by the occupants. The term also excludes a person or entity that does not sell or distribute electricity and that owns or operates equipment used exclusively for the charging of electric vehicles.
D.C. Code § 34-207
Section 301 of D.C. Law 19-252 provided that the Mayor shall issue rules to implement the provisions of the act within 180 days of its effective date [Mar. 19, 2013].