MISO’s generator interconnection queue now totals 174 GW across 944 projects, a result of several developers dropping out of the line in recent months.
MISO Vice President of System Planning Aubrey Johnson told a Nov. 11 meetup of the Entergy Regional State Committee that MISO expects even more withdrawals as its planners begin processing studies. Johnson said many developers left the queue after the Trump administration announced it would abolish tax incentives for renewable energy development.
MISO’s queue has dropped steadily since the news. At the beginning of 2025, MISO said it had 312 GW to study; by September, that number had fallen to 215 GW. (See MISO Interconnection Queue Drops to 215 GW on Tax Incentive Phaseout.)
Johnson said MISO now expects to be able to sign 25 GW of interconnection agreements annually.
“We are moving projects through the interconnection queue; we are getting projects ready to come online,” Johnson said. He said MISO will work on the 2022, 2023 and 2025 cycles of projects; the RTO skipped the 2024 cycle while it designed a queue megawatt cap and put stricter rules in place to discourage developer speculation.
Between now and the second half of 2026, MISO estimates its members will add 8 GW of nameplate capacity (5 GW on an accredited basis) to the system.
Johnson said if achieved, those additions will exceed the 3.1 GW of capacity additions that MISO and the Organization of MISO States said were needed to meet the summer 2026 planning reserve margin. The shortfall prediction came from the MISO-OMS annual resource adequacy survey.
Johnson said as of November, MISO has 61 GW of projects with signed generator interconnection agreements that have permission to connect to the system.
