Live market data
MISO outage forecast
MISO's published schedule of generation on planned outage — the supply side of every tight hour, known in advance.
Fetching the latest published forecast…
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MISO's published schedule of generation on planned outage — the supply side of every tight hour, known in advance.
How much MISO generation is scheduled off?
MISO planned outages peaks at 9,839 MW on Tue, 12 AM, against a low of 8,731 MW — a swing of 1,108 MW across the window. Planned outage capacity is the heaviest area at 9,839 MW.
Plotted window Aug 29, 12:00 AM CDT → Sep 2, 12:00 AM CDT. Republished by MISO as the schedule changes; the latest is shown.
Every line above, and who produced it.
The grid operator's own published forecast for these hours. Source: MISO.
Each day of the window on its own.
Every hour of the window, shaded by load.
| Series | Peak (MW) | Peak hour | Low (MW) | Average (MW) |
|---|---|---|---|---|
| Planned outage capacity | 9,839 | Tue, 12 AM | 8,731 | 9,069 |
| Forecast | Produced by | Method | Horizon |
|---|---|---|---|
| Planned outage capacity | MISO | MISO outage forecast | Through the day ahead, hourly |
This is a schedule rather than a forecast, so its uncertainty is of a different kind: outages get rescheduled, extended, and cancelled, and forced outages arrive with no notice at all and never appear here.
Generating capacity that MISO expects to be unavailable because it is scheduled off for maintenance. This is a published schedule rather than a prediction: units submit planned outages in advance, and this is the total the market expects to be missing at each point in the window.
MISO's footprint is large enough that maintenance is nearly continuous somewhere in it. What matters is the total: capacity out is capacity unavailable to the same margin the grid-conditions forecast is measuring.
Read this next to the MISO grid-conditions page. Outages are the difference between installed capacity and the capacity actually committed to serve the forecast peak.
Forced outages. A unit that trips has not scheduled anything, so it cannot appear here — and forced outages are precisely what turns a comfortable planned margin into a scarcity event. Read this as the floor under how much capacity is missing, never the total.
curl "https://askthegrid.com/api/v1/grid/radar/curves?iso=MISO&horizon=extended"
Connect your agent to mcp.askthegrid.com and this forecast is a tool call away — the same host Claude and ChatGPT connectors already use.
A generating unit taken offline deliberately for maintenance, refuelling, or repair, scheduled with the grid operator in advance. Operators concentrate them in low-demand seasons so the capacity is missing when it is least likely to be needed.
Because that is how far the feed reaches. MISO publishes this one through the day ahead; the page shows what the market states rather than extending it with an assumption.
Capacity that is out cannot bid. Removing a large block of it from the supply stack means the market clears further up that stack for the same demand, so a heavy outage day and a high demand day landing together is the classic setup for a price spike.