SUBSCRIBER NOTE: Platts to discontinue electricity assessments in ISO markets

In an effort to better serve its customers, Platts will be making changes to the markets in which it publishes North American electricity price assessments. After flow date December 1, 2014, Platts will no longer publish price assessments for markets served by an independent system operator. Platts price assessments are largely redundant with the day-ahead, on-peak and off-peak prices the ISOs publish. Also, ISO auctions provide price transparency for a much larger number of hubs and zones than are traded in the bilateral market. Instead of publishing bilateral price assessments in ISO markets, Platts will publish on-peak and off-peak averages for real-time or hourly prices. This will complement the on-peak and off-peak averages for day-ahead prices Platts currently publishes. In addition to all the locations currently covered by day-ahead averages, average hourly prices for Alberta and Ontario also will be published. With a renewed focus on the less transparent physical bilateral markets, Platts is seeking comment on additional locations in the Southeast and West for new bilateral day-ahead price assessments. There are a number of delivery locations outside of the ISOs traded in the physical markets. In general, Platts prefers to price one specific location, normalizing transactions from nearby locations. But in some cases a basket approach using multiple locations is considered best. Platts is proposing day-ahead, bilateral market assessments for the following delivery locations:

Into GTC: Georgia Transmission Corp. system John Day: The substation for the John Day Dam in Washington State NOB: The Nevada-Oregon Border, is the interface with Pacific DC Line Montana: A basket of delivery locations within the state of Montana Wyoming: A basket of delivery locations within the state of Wyoming Borah: A substation in South-Central Idaho Craig: A substation in Western Colorado associated with the Craig coal-fired power plant Ault: A substation in Northeastern Colorado Pinnacle Peak: A group of substations Northeast of Phoenix, Arizona Westwing: A substation Northwest of Phoenix, Arizona

If you have any input on defining these locations, other feedback, or would like to report transactions for delivery at any of these locations, please email mark.callahan@platts.com and pricegroup@platts.com.

Below are the day-ahead, weekend and near-term bilateral indexes that Platts will discontinue:

AD Hub Dominion Hub Entergy, into ERCOT, Houston ERCOT, North ERCOT, South ERCOT, West Illinois Hub Indiana Hub MAPP, South Mass Hub Michigan Hub Minnesota Hub N.Y. Zone-A N.Y. Zone-G N.Y. Zone-J NI Hub NP15 Ontario PJM West SP15 SPP, North

Please contact mark.callahan@platts.com and pricegroup@platts.com if you have questions regarding the discontinuations or have any feedback on alternative day-ahead hub or zone pricing for any of the ISO markets.