With an Arctic cold front rolling through the southern part of its footprint Tuesday morning, SPP set a new winter demand peak of 42.71 GW. The previous mark of 41.01 GW — set Jan. 2 — lasted only two weeks.

FERC and grid operators will explore "resilience" following the commission’s rejection of Energy Secretary Rick Perry’s proposed rulemaking.

Grid operators turned to coal- and oil-fired generation as Arctic air sent temperatures plunging to record lows from the Great Plains to the Deep South.

SPP’s market-to-market (M2M) process with MISO again resulted in a large payment to SPP for November operations.

Clean Line Energy Partners said that market realities led the company to sell its Oklahoma assets to NextEra Energy, but is continuing work on other projects.

Power prices surged along with demand across much of the U.S. as a blast of Arctic air sent temperatures plunging to record lows.

The Dec. 21 FERC order requiring SPP to help fast-start resources set LMPs added one more to-do for the RTO in what is shaping up to be a busy 2018.

FERC accepted Tariff revisions to streamline SPP’s Integrated Transmission Planning (ITP) process, despite opposition from wind developers.

Clean Line Energy Partners sold all of the Oklahoma portion of the Plains & Eastern transmission project to NextEra Energy.

FERC dropped its plan for a one-size-fits-all rule on fast-start pricing, instead issuing individual orders requiring PJM, SPP and NYISO to change their tariffs.