MISO capacity emergencies this year
How many days MISO has been under a capacity alert, warning or emergency this year, which days they were, how far up the ladder each went, and what is in effect now.
MISO capacity emergencies this year
How many days MISO has been under a capacity alert, warning or emergency this year, which days they were, how far up the ladder each went, and what is in effect now.
MISO capacity emergency days since Aug 21
In effect now
Normal
No capacity declaration across the footprint
EEA days since Aug 21
2
1 at EEA 2 or higher
Warning or emergency days since Aug 21
3
23 days with any capacity alert · 0 covered all of MISO
Ask the Grid's record of MISO's postings begins Aug 21, 2026; earlier days this year are not counted.
Days with a capacity declaration since Aug 21
- Mon, Aug 31Alert
- Tue, Sep 1Alert
- Wed, Sep 2EEA 2
- Thu, Sep 3Alert
- Fri, Sep 4Alert
- Sat, Sep 5Alert
- Sun, Sep 6Alert
- Mon, Sep 7Alert
- Tue, Sep 8Alert
- Wed, Sep 9
What this shows
MISO's ladder
MISO starts with a Capacity Advisory, then a Maximum Generation Alert, a Maximum Generation Warning, and Maximum Generation Event steps that run alongside NERC EEA levels 1 to 3. MISO declares many of these for one region, such as MISO South, rather than the whole footprint.
How the days are counted
A day counts when a capacity declaration at alert or above covers any part of it, in the market's own time zone, whether it covered the whole footprint or one region. Each day takes the highest step and NERC EEA level declared that day, and overlapping or renewed postings count once. Drills are never counted.
One ladder across markets
Every operator names its steps differently. Ask the Grid places each on one ladder, advisory, alert, warning, emergency action and load shed, with the NERC EEA level the operator states or its procedure defines, so a day here means the same thing in every market.
What people ask
Has MISO declared an Energy Emergency Alert this year?
The EEA counts at the top of this page say, with each day it was declared. They come from MISO's own postings and update within minutes of a new one.
What is the difference between an alert, a warning and an emergency?
An alert says supply may be tight ahead of time. A warning says reserves are short or about to be. An emergency action means the operator is already using emergency resources, and load shed means it is cutting load to protect the grid.
Why count a declaration that covered only part of the market?
A balancing area or region under an EEA is the market under an emergency there. The page shows how many days covered the whole footprint separately, and marks each declaration with where it applied.
Sources
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