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Forecast demand against committed capacity for the published hours ahead — with the calculated capacity-demand gap and its tightest hour named explicitly.
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Forecast demand against committed capacity for the published hours ahead — with the calculated capacity-demand gap and its tightest hour named explicitly.
Does MISO have enough power lined up?
MISO forecast demand peaks at 97,329 MW on Mon, 5 PM, against a low of 60,616 MW — a swing of 36,713 MW across the window. Forecast demand is the heaviest area at 97,329 MW.
Every line above, and who produced it.
Observed or settled values for the plotted intervals. Source: MISO.
A published forecast for the plotted target intervals. Source: MISO.
A published forecast for the plotted target intervals. Source: MISO.
Each day of the window on its own.
Every hour of the window, shaded by load.
| 0 | 6 | 12 | 18 | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sun, 10/11 |
| Series | Peak (MW) | Peak hour | Low (MW) | Average (MW) |
|---|---|---|---|---|
| Forecast demand | 97,329 | Mon, 5 PM | 60,616 | 76,089 |
| Forecast available capacity | 111,073 | Mon, 5 PM | 78,858 | 90,306 |
| Planned outage capacity | 35,641 | Sat, 12 AM | 31,218 | 33,422 |
| Forecast | Avg miss (MW) | Avg miss % | Bias | Hours |
|---|---|---|---|---|
| MISO intraday demand | 1,189 | 1.5% | −1,008 | 43 |
The latest published vintage of each forecast, against what settled. Smaller is better on every column. Bias is signed: positive means the forecast ran high.
| Series | Produced by | Method | Horizon | Issued |
|---|---|---|---|---|
| Forecast demand | MISO | MISO forecast demand, committed capacity, and generation outage data | Across MISO's currently published forward window, hourly | Issue time not exposed by this feed |
| Forecast available capacity | MISO | MISO forecast demand, committed capacity, and generation outage data | Across MISO's currently published forward window, hourly | Issue time not exposed by this feed |
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 committed capacity for the same hours. This page subtracts demand from capacity on matched timestamps and names the smallest forward gap. That calculated gap is an operating indicator; it is not MISO's formal planning-reserve-margin measure.
A narrower committed-capacity gap means less scheduled capacity above forecast demand in the published operating window. It does not by itself establish an emergency, a causal explanation, or a planning shortfall; imports, reserve requirements, resource status, forced outages, and operator actions also matter.
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 reports as committed for each published hour. This page calculates committed capacity minus forecast demand; that capacity-demand gap is useful operating context but is not the same as MISO's formal reserve-margin metrics.
MISO can use advisories and emergency procedures when operating conditions warrant. The calculated tightest-hour gap is context, not an alert forecast: current resource status, forced outages, imports, reserves, and operator notices must be read with it.
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.
Plotted window Oct 11, 5:00 AM CDT → Oct 12, 11:00 PM CDT. Reissued through the operating day; the latest vintage is shown. Source snapshot Oct 12, 4:30 AM CDT.
| Mon, 10/12 |
|---|
Darkest cells are the tightest hours. The window peaks at 97,329 MW on Mon, 5 PM, local to the market.