Every public utility and every natural gas vendor and electric vendor subject to subsection c. of R.S. 48:3-7.8, shall file with the board a designation in writing of an agent, resident of this State who shall have custody of such records, books, accounts, documents and other writings, and upon whom process for the production of the same may be served. Such designation shall set out the name of such agent, his place of residence within this State and his place of business. A public utility or vendor filing such designation may at any time revoke such designation, provided, that simultaneously with the revocation of such designation, a substituted designation be filed by it with the board.
N.J.S. § 48:3-7.9