Wyoming Refines Pricing Method for Wind Power Purchases
Invokes use of a wind proxy
Update courtesy of Utility Regulatory News #4054: Reviewing the methodology used by Rocky Mountain Power for its purchases of energy and capacity from wind-based qualifying small power production facilities (QFs), the Wyoming Public Service Commission has adopted a permanent avoided-cost pricing method for the utility. Referring to it as a “partial displacement differential revenue requirement” approach, the commission said that the new method involves two primary changes from previous avoided-cost rate formulas. First, capacity deferrals for all wind QFs will be premised on a wind proxy and will no longer be limited to 50 megawatts per year. Second, the timing and amount of such deferrals will depend on the need for and the costs of a wind unit or a combined-cycle combustion turbine, as reflected in the utility’s most recent integrated resource plan. In rejecting a counter-proposal for “front-loaded” capacity payments to wind QFs, the commission said that such treatment would be tantamount to rate basing of the facilities, a measure that is reserved solely for utility-owned generating resources and thus would be inapt for wind QFs. According to the commission, use of a wind proxy should produce QF rates sufficient to promote growth in the wind power industry in the state. For the full story, subscribe to URN.
Posted: January 27th, 2012 under ratemaking, renewables, wind power.
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