Provides that a state agency that is served by a public or private utility must purchase all available anaerobic digestion power from the local electric utility when the producer of the power sends a written purchase request to the agency. Purchases by a state agency shall not exceed the agency's annual electricity consumption. A state agency shall pay for anaerobic digestion power at no less than the retail price that the local electric utility charges that customer.

Declares that state agencies are not required to purchase all available anaerobic digestion power from their local electric utility if the utility is exempt from offering a qualified alternative energy resource as defined in RCW 19.29A.090.