Wash. Rev. Code § 54.28.020
(1) There is hereby levied and there shall be collected from every district a tax for the act or privilege of engaging within this state in the business of operating works, plants or facilities for the generation, distribution and sale of electric energy. With respect to each such district, except with respect to thermal electric generating facilities taxed under RCW 54.28.025, such tax shall be the sum of the following amounts:
[ 1983 2nd ex.s. c 3 s 8; 1982 1st ex.s. c 35 s 18; 1977 ex.s. c 366 s 2; 1959 c 274 s 2; 1957 c 278 s 2. Prior: 1949 c 227 s 1(a); 1947 c 259 s 1(a); 1941 c 245 s 2(a); Rem. Supp. 1949 s 11616-2(a).]
Construction—Severability—Effective dates—1983 2nd ex.s. c 3: See notes following RCW 82.04.255.
Severability—Effective dates—1982 1st ex.s. c 35: See notes following RCW 82.08.020.
Severability—1947 c 259: "If any section, subsection, clause, sentence or phrase of this act be for any reason adjudged unconstitutional, such adjudication shall not invalidate the remaining portions of this act, and the legislature hereby declares that it would have enacted this act notwithstanding the omission of the portion so adjudicated invalid." [ 1947 c 259 s 2.]