Subscriber note: Platts to launch non-firm electricity indexes

Platts will launch daily assessments of day-ahead, non-firm electricity delivered in the Western US interconnection starting on trade date September 13, 2013. The non-firm assessments will be for the same Western delivery locations for which Platts currently publishes assessments for electricity with firm delivery and liquidated damages. Non-firm electricity contracts allow for non-delivery without penalty under conditions described in the contract and generally trade at a discount to firm LD power. For the new non-firm assessments, Platts will apply its existing North American electricity methodology for day-ahead markets. The new assessments will be for Mid-C, COB, Palo Verde, Mead, Mona, Four Corners, NP15 and SP15. In addition, Platts will also assess western prices for Sunday on-peak and Sunday off-peak delivery separately from the standard around-the-clock Sunday and off-peak Monday package. Platts will publish the assessments in Platts Market Data. Please send any questions or feedback to mike_wilczek@platts.com and cc: to pricegroup@platts.