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.

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.

MISO laid out why it needs a 2nd LRTP portfolio, saying it will connect hundreds of gigawatts of new resources in the next 20 years to avoid reliability crises.

MISO said its markets will need renovation as it braces for systems rife with renewables and extreme weather uncertainty.

MISO unveiled a first look at possible long-range transmission projects, igniting testy exchanges between stakeholders over the necessity of grid expansion.

SPP staff and stakeholders have added an accelerated decarbonization future to the RTO’s 20-year long-term assessment.

MISO will draw on its new planning futures to build the first set of models that could result in the long-term transmission plan’s first projects.

MISO is wrapping up its 2020 Transmission Expansion Plan and eyeing next year’s planning cycle, with more renewable energy predictions.

SPP stakeholders once again took a crack to resolve a weighty issue in determining how futures will be considered in the RTO’s 2021 transmission plan study.

MISO said it foresees hundreds of gigawatts in mostly carbon-free resource additions by 2040, according to its new transmission planning future scenarios.