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MISO Nuclear Supply

Midcontinent ISO, 13 operating reactors, 11,512 MW installed. Every unit below links to its own operating record.

MISO Today

as of Oct 16, 2026

MW off line

2,398

20.8% of the market's nuclear fleet

Generating now

9,114

of 11,512 MW installed

Units at power

9 / 13

1 derated · 3 off line

Fleet reliability

███

Individual

What MISO Itself Reports

the grid operator's own published data, beside ours

Nuclear output, latest reading

9,401 MW

Oct 16, 6:55 PM ET · MISO fuel mix

All generation on outage

69,103 MW

every fuel, Oct 16

Nuclear share of that

3.5%

2,398 MW of it is nuclear, by our count

Forced, all fuels

10,179 MW

planned 36,624 · derated and unplanned 22,300

MISO Multiday Operating Margin report, all fuels, as published Oct 16, 2026. This is the operator's forecast of ALL generation on outage, not a nuclear figure and not ours: it is here to size our nuclear megawatts against the whole stack.

The Generators in MISO

13 units · click any unit for its full record

Unit	Owner	St	MW	Power	MW off	Status	RecordIndividual	Overrun	B2B
Callaway	Ameren Missouri	MO	1,190	0.0%	1,190	RFO	██	██	██
Point Beach 1	NextEra Energy	WI	589	0.0%	589	RFO	██	██	██
Prairie Island 1	Xcel Energy	MN	521	0.0%	521	RFO	██	██	██
Waterford 3	Entergy	LA	1,087	91.0%	98	Derated	██	██	██
Grand Gulf 1	Entergy	MS	1,397	100.0%	—	At power	██	██	██
Fermi 2	DTE Energy	MI	1,141	100.0%	—	At power	██	██	██
Clinton	Constellation Energy	IL	1,079	100.0%	—	At power	██	██	██
Arkansas Nuclear 2	Entergy	AR	982	100.0%	—	At power	██	██	██
River Bend 1	Entergy	LA	968	100.0%	—	At power	██	██	██
Arkansas Nuclear 1	Entergy	AR	826	100.0%	—	At power	██	██	██
Monticello	Xcel Energy	MN	617	100.0%	—	At power	██	██	██
Point Beach 2	NextEra Energy	WI	597	100.0%	—	At power	██	██	██
Prairie Island 2	Xcel Energy	MN	519	100.0%	—	At power	██	██	██

Know which of these units you can rely on Individual · $165/mo

Every reactor scored 0-100 on capacity factor, forced-outage days, streak length, refuel and startup speed, so a published date from a top-decile unit is read differently from one from a bottom-decile unit.

Operational Excellence per unit
Projected overrun days
Breaker-to-breaker streaks
Rank within reactor type and cycle length

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MISO Outage Pipeline

Individual

When every unit in MISO comes off line next, on one timeline, with the utility's published dates and our projected ones side by side.

See MISO's outage pipeline Individual · $165/mo

The next eighteen months of outages for this market on a single chart, so overlapping refuelings are obvious before they bite.

Published + projected start dates
MW at stake per outage
Confidence on every date
Projected overrun days

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MISO Fleet Operating Record

Individual

How the 13 reactors in MISO actually run, as a fleet: the average Operational Excellence score, forced-outage days per unit, how many are in a qualifying breaker-to-breaker run, and which unit in this market is the most and least reliable.

Unlock with Individual $165/mo

MISO This Season

Full seasonal comparison

Fall 2026 average

772 MW

season in progress

Season peak

2,473 MW

on Oct 10

vs Fall 2025

███

Individual

Refuels this season

3 unplanned events

Stack MISO against every other market Pro · $499/mo

Eighteen months of MW offline, broken out by market and stacked, so you can see whose supply moved and when.

Stacked MW-offline history by market
Per-market forward curve
Ontario as a parallel fleet
CSV of any board

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