Live market data
SPP wind forecast
SPP's hourly mid-term wind forecast across the fourteen-state wind belt, with its seven-day outlook shown exactly as published.
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SPP's hourly mid-term wind forecast across the fourteen-state wind belt, with its seven-day outlook shown exactly as published.
How much wind power will SPP get?
SPP wind output peaks at 29,763 MW on Fri, 1 AM, against a low of 6,305 MW — a swing of 23,458 MW across the window. Wind forecast is the heaviest area at 29,763 MW.
Every line above, and who produced it.
Observed or settled values for the plotted intervals. Source: SPP.
A published forecast for the plotted target intervals. Source: SPP.
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) |
|---|---|---|---|---|
| Wind forecast | 29,763 | Fri, 1 AM | 6,305 | 18,383 |
| Wind settled (recent) | 22,421 | Sun, 8 PM | 18,550 | 20,522 |
| Forecast | Avg miss (MW) | Avg miss % | Bias | Hours |
|---|---|---|---|---|
| SPP wind forecast | 4,862 | 23.7% | +4,862 | 23 |
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 |
|---|---|---|---|---|
| Wind forecast | SPP | SPP mid-term wind forecast | 7 days ahead, hourly | Issue time not exposed by this feed |
SPP publishes a point forecast with no confidence interval, so there is no band to calibrate. The scorecard compares the latest forecast for each settled hour with observed output.
SPP publishes its wind forecast twice: a five-minute short-term run that reaches about four hours, and an hourly mid-term run that reaches a full week. This page plots the mid-term publication and scores it against observed wind output, which SPP reports alongside the short-term run, over the hours both cover.
SPP's footprint sits on the spine of the US wind belt, from the Dakotas to the Texas Panhandle. Wind is routinely a large source on the system and can materially affect commitment, congestion, and prices alongside demand, outages, transmission constraints, fuel costs, and other supply conditions.
Read the level, ramp, and timing together. A large expected wind change can alter the supply mix available to serve demand, but this page does not attribute a price outcome to wind alone.
curl "https://askthegrid.com/api/v1/grid/radar/curves?iso=SPP&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.
More than any other US market: wind is routinely SPP's largest source, has exceeded 60% of load at times, and averages over a third of annual energy. The fourteen-state footprint sits directly on the US wind belt.
This page shows SPP's hourly mid-term forecast, which reaches seven days. SPP also publishes a separate short-term forecast at five-minute resolution; it is not the series plotted here.
Wind is one material input to SPP operations and prices because changes in available wind alter the supply mix. The price effect also depends on demand, unit availability, congestion, fuel costs, bids, and the location and timing of the change.
Plotted window Oct 11, 5:00 PM CDT → Oct 19, 4:00 PM CDT. Reissued continuously; the latest vintage is shown. Source snapshot Oct 12, 3:55 PM CDT.
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| Wed, 10/14 |
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| Thu, 10/15 |
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| Fri, 10/16 |
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| Sun, 10/18 |
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| Mon, 10/19 |
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Darkest cells are the tightest hours. The window peaks at 29,763 MW on Fri, 1 AM, local to the market.