The commission shall prescribe such rules and regulations as may be necessary to carry out the provisions of this chapter, including rules of procedure and for taking evidence in all matters that may come before it, and enter such orders as may be just and lawful: Provided, That no such rule or regulation shall be effective unless promulgated pursuant to the provisions of sections one through ten, article three, chapter twenty-nine-a of this code: Provided, however, That no such rule or regulation shall become effective until sixty days after its final adoption or until the effective date proposed by the commission, whichever is later: Provided further, That any rules and regulations promulgated prior to the effective date of this section shall remain in full force and effect unless changed, modified or repealed in accordance herewith. The rules and regulations promulgated hereunder by the public service commission shall not be subject to the legislative rule-making review procedures established in sections eleven through fifteen, article three, chapter twenty-nine-a of this code. In the investigations, preparations and hearings of cases, the commission shall not be bound by the technical rules of pleading and evidence, but in that respect it may exercise such discretion as will facilitate its efforts to understand and learn all the facts bearing upon the right and justice to the matters before it.
Meetings of the commission wherein the sole purpose is to decide or deliberate toward a decision on any matter are exempt from the requirements of article nine-a, chapter six of this code, any other provision of this code to the contrary notwithstanding.
All orders of the commission shall set forth separately findings of facts and conclusions of law, which findings of fact shall make specific reference to the evidence in the record which supports such findings.
The commission shall have a seal bearing the following inscription: "The Public Service Commission of West Virginia." The seal shall be affixed to all writs and authentications of copies of records, and to such other instruments as the commission shall direct. All courts shall take judicial notice of said seal.