In addition to any other powers and duties under this chapter, the commission shall have the authority to authorize and approve the terms of any lease of utility facilities by a public service company, as lessee, if the public service company makes proper application to the commission certifying that such authorization or approval is necessary or appropriate to exempt any owner of the facilities from being a public utility company under the federal Public Utility Holding Company Act of 1935.
RCW 80.04.520