MISO officials are examining how they can capture the risk of planned and maintenance outages occurring during peak load.

MISO predicts the 2018/19 planning year will require a reserve margin just more than 17%, a figure that’s been steadily increasing over the years.

After criticizing Ameren Illinois for miscalculating its summer peak load forecast, Dynegy called on MISO to develop a new process for verifying forecasts.

FERC rejected SPP’s proposed Tariff revisions requiring load-responsible entities (LREs) to maintain sufficient capacity and planning reserves.

Planning reserve margins are expected to be adequate for a hotter-than-normal summer, FERC said in its annual summer reliability report.

SPP stakeholders approved a revision request that allows the RTO to lower its planning reserve margin as it waits on a quorum-less FERC.

MISO summer planning reserve margins will remain firmly above requirements even after it shaved nearly half a percentage point.

MISO expects a 19.2% planning reserve margin this summer, well above its 15.8% requirement, and a percentage point above its projection last year.

SPP’s Regional State Committee (SPP RSC) accepted a working group’s proposal to leave unchanged their safe-harbor thresholds.

MISO will have a 15.8% planning reserve margin for the 2017/18 planning year, up slightly from last year, according to the RTO’s loss-of-load-expectation study.