Ancillary Services
With costs associated with ISO-NE’s new day-ahead ancillary services market far exceeding expectations, the RTO is working to fast-track changes to improve the efficiency of the market in time for next winter.
PJM’s Market Implementation Committee passed by acclamation a PJM issue charge seeking to more thoroughly define how storage resources participate in the energy and ancillary service markets.
MISO membership called for modernized market rules for energy storage that can capture its chameleon-like roles.
New England experienced record high energy costs in the month of January amid cold weather, high gas prices and a heavy reliance on oil-fired generation.
Having finally added real-time co-optimization to the market like every other U.S. grid operator with an effort that began in 2019, ERCOT can turn its attention to other pressing issues.
FERC told PJM to change its rules to allow for co-located load at generators, with new transmission services and other tweaks.
ERCOT’s Board of Directors has approved staff’s proposed 765-kV Eastern Backbone project and its $9.4 billion capital cost price tag, making it the most expensive project in the grid operator’s history.
MISO and its Monitor tracked a rise in energy consumption in fall 2025 and reviewed some operational rough patches, while the RTO explained why its machine-learning risk predictor remains a work in progress.
ISO-NE’s new day-ahead ancillary services market added about $258 million in incremental costs between March and August, equal to 7.6% of total energy market costs.
PJM’s forecasting of hourly peak loads continued to improve in November, with an error rate of just 1.17%, staff told the RTO’s Operating Committee.
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