Doubts continue to swirl around which version of MISO’s future fleet mix is appropriate for long-range transmission planning — the Independent Market Monitor’s or the RTO’s itself.

Amid the Independent Market Monitor’s denunciation of MISO’s fleet assumptions for long-term transmission plans, lead planners defended their approach to planning for 2040.

MISO’s lead planners told the Board of Directors that more expensive annual Transmission Expansion Plans will become the norm, saying MTEP 23’s $9.4 billion package is a sign of future scattershot load growth in the footprint.

MISO’s Independent Market Monitor took his concerns to stakeholders over what he deems unrealistic fleet assumptions in MISO’s long-range transmission planning.

FERC approved LS Power’s request for rate incentives for the first competitive project surfacing from MISO’s long-range transmission plan.

MISO IMM David Patton appeared before the Market Subcommittee to again criticize the future resource mix assumptions MISO is using to craft a second long-range transmission plan.

MISO South regulators publicly opposed a postage stamp cost allocation design, potentially setting the stage for a showdown as MISO prepares for a third long-range transmission portfolio.

MISO’s IMM debuted five new recommendations as part of his annual State of the Market Report, as multiple suggestions were aimed at maximizing transmission utilization by clamping down on wind-related congestion.

The clean energy organizer for the Alliance for Affordable Energy said there’s a lack of accessibility within MISO for individual ratepayers to make their opinions heard on grid decisions that affect them.

MISO said it’s on track this year to map out the new transmission lines it will require under the second portfolio of its long-range transmission plan to keep the grid stable.