(1) Any conservation supplier may participate in the bidding process. A utility may allow a utility subsidiary to participate as a conservation supplier, on conditions described in WAC 480-107-135 Conditions for purchase of electrical power or savings from a utility's subsidiary or affiliate. A decision to allow a utility subsidiary to participate must be explained in the utility's RFP submittal.

(2) All conservation measures included in a project proposal must:

(a) Produce electrical savings over a time period greater than five years, or a longer period if specified in the utility's RFP. A measure with an expected life that is shorter than the contract term must include replacements through the contract term;

(b) Be consistent with the utility's integrated resource plan; and

(c) Produce savings that can be reliably measured or estimated with accepted engineering methods.