examples of auction processes that worked

Jeff Skilling proposed a solution to Gov Davis to solve the supply and
pricing problems in the California market. In summary, the proposal would
have a neutral party conduct an auction wherein the utilities would seek bids
for 5-10 year packages of power from suppliers. The gov asked if anyone had
successfully conducted such an auction in the industry already.

I need your help to identify and describe any such examples (European or
North American) by mid day Monday. Jeff and I will have a follow up call with
the governor on Monday.

Thanks