SPP Market Monitor: Negative Prices May Require Rule Changes January 25, 2018By Tom KlecknerSPP’s Marketing Monitoring Unit says it is concerned with a “marked increase” in the frequency of negative price intervals. | Oklahoma Municipal Power Authority Tell us who you are,get 2 free articles each month. What do you want to know?Want a free trial instead? Click here.Already convinced? View pricing and plans.Already a subscriber? Log in here. Additional news on this topic:SPP Report Shows Continued Drop in Coal GenerationCoal’s share of SPP’s energy production continues to slide in the face of low gas prices, according to the RTO’s latest State of the Market report.FERC Approves SPP Shortage Pricing ChangesFERC accepted SPP’s proposed Tariff revisions related to shortage pricing. | © RTO InsiderSPP Coal Generation Continues Decline; Wind, Load Records SetSPP set a new record for wind generation Friday when the footprint cracked the 12,000-MW threshold for the first time, producing 12,141 MW.