 The PSC was created by act of Congress on March 4, 1913, after President William Howard Taft signed into law the District of Columbia Appropriations Act, which authorized the Public Utilities Commission (name changed to PSC in 1964) to "furnish service and facilities reasonably safe and adequate" to ensure that any charges were reasonable, just and nondiscriminatory; and it initially had jurisdiction over electric, gas, and telephone companies, including mass transit, such as street cars, buses, and public motor vehicles.In 1974, the Home Rule Act affirmed the PSC as an independent charter agency.Since 1913, 72 men and women have served as Commissioners.