SPP’s Marketing Monitoring Unit says it is concerned with a “marked increase” in the frequency of negative price intervals.

NYISO power prices jumped sharply in December on the back of sharp gains for natural gas stemming from extreme cold weather at the end of the month.

FERC allowed NYISO to temporarily waive energy offer caps in response to recent natural gas price spikes stemming from this winter’s extreme cold snap.

While the high load and generation outages followed the pattern of the polar vortex, MISO managed to keep prices stable and maintain better reliability.

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.

NYISO year-to-date monthly energy prices averaged $34.72/MWh in November, a 5% increase from a year earlier.

NYISO third-quarter energy prices fell 16 to 30% versus a year ago due to falling electricity demand and lower natural gas costs according to the ISO’s MMU.

At a conference to analyze Pennsylvania’s electricity markets, Christina Simeone unveiled her study on price impacts from the expansion in shale gas.

A decade of shale gas production has had a major impact, panelists said during a power industry seminar focusing on the Marcellus shale.

The New York Public Service Commission (NYPSC) enacted consumer protection standards for distributed energy resource (DER) suppliers.