Live market data
MISO grid conditions
Forecast demand against committed capacity for the hours ahead — the gap is the real reserve margin, and the tightest hour is named explicitly.
Fetching the latest published forecast…
01
Forecast demand against committed capacity for the hours ahead — the gap is the real reserve margin, and the tightest hour is named explicitly.
Does MISO have enough power lined up?
MISO forecast demand peaks at 103,474 MW on Fri, 5 PM, against a low of 70,805 MW — a swing of 32,669 MW across the window. Forecast demand is the heaviest area at 103,474 MW.
Plotted window Aug 28, 2:45 AM CDT → Aug 28, 11:00 PM CDT. Reissued through the operating day; the latest vintage is shown.
Every line above, and who produced it.
The grid operator's own published forecast for these hours. Source: MISO.
Generating capacity expected to be available to serve demand.
Each day of the window on its own.
Every hour of the window, shaded by load.
| 0 | 6 | 12 | 18 | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fri, 8/28 |
| Series | Peak (MW) | Peak hour | Low (MW) | Average (MW) |
|---|---|---|---|---|
| Forecast demand | 103,474 | Fri, 5 PM | 70,805 | 85,180 |
| Forecast available capacity | 110,866 | Fri, 6 PM | 85,148 | 96,169 |
| Planned outage capacity | 9,839 | Tue, 12 AM | 8,731 | 9,069 |
| Forecast | Produced by | Method | Horizon |
|---|---|---|---|
| Forecast demand | MISO | MISO forecast demand, committed capacity, and generation outage data | Through the day ahead, hourly |
| Forecast available capacity | MISO | MISO forecast demand, committed capacity, and generation outage data | Through the day ahead, hourly |
Both curves are point forecasts with no confidence interval. Forced outages — the capacity that fails unplanned — are by definition absent from the committed line, so real margins can be tighter than forecast ones.
MISO publishes both a demand forecast and the capacity it has committed for the same hours. Plotting them together turns two curves into the number that matters: the gap. When it narrows, MISO issues capacity advisories and the market prices scarcity; this page names the tightest forecast hour directly.
MISO has run closer to its reserve margins than most US markets in recent years — retiring coal faster than replacements interconnect, across a footprint whose north and south peak in different seasons. The committed-capacity line here is the operational answer to that structural question, one day at a time.
The planned-outage series alongside shows how much capacity is deliberately offline for maintenance. A tight margin with heavy planned outages reads very differently from a tight margin with the fleet fully available — the table below carries both.
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.
The generation MISO has scheduled and committed to be available for each hour — units that are online or can be brought online in time. The gap between it and forecast demand is the operating margin the grid actually runs on.
MISO steps through its emergency procedures: conservative operations, capacity advisories, then Maximum Generation events that can access emergency resources and imports. Prices rise sharply through those steps — the tightest-hour readout above is the early signal.
The market has retired coal capacity faster than new resources complete interconnection, and its planning auctions have signaled scarcity in recent years. The seasonal construct now prices each season separately — winter and summer both matter.
Darkest cells are the tightest hours. The window peaks at 103,474 MW on Fri, 5 PM, local to the market.