Every corporation having for one of its principal purposes the transmission, distribution, sale, or furnishing of natural gas or other type gas for light, heat, or power and holding and owning a certificate of public convenience and necessity from the utilities and transportation commission authorizing the operation of a gas plant, may appropriate, by condemnation, lands and property and interests therein, for the transmission, distribution, sale, or furnishing of such natural gas or other type gas through gas mains or pipelines under the provisions of chapter 8.20 RCW.