Owen J. Roberts, Vinson v. Washington Gas Light Company…
“ Nothing in the statute is to be 'taken to prohibit a public utility, with the consent of the commission, from providing a sliding scale of rates and dividends according to what is commonly known as the Boston sliding scale, or other financial device that may be practicable and advantageous to the parties interested.' But no such arrangement is lawful until found by the Commission, after investigation, to be reasonable, just, and not inconsistent with the purposes of the Act. ”
