Live market data
MISO load forecast
MISO's own medium-term load forecast against five-minute realized demand, split across the ten local resource zones that stretch from Minnesota to Louisiana.
Fetching the latest published forecast…
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MISO's own medium-term load forecast against five-minute realized demand, split across the ten local resource zones that stretch from Minnesota to Louisiana.
How much power will the middle of America need?
MISO demand peaks at 105,151 MW on Thu, 5 PM, against a low of 72,295 MW — a swing of 32,856 MW across the window. Zone 9 (Louisiana and East Texas) is the heaviest area at 18,634 MW, 18% of the system peak.
Every line above, and who produced it.
What settled — the realized values every forecast here is scored against.
The grid operator's own published forecast for these hours. Source: MISO.
Every settled hour scored against what each forecast said beforehand.
The window peaked at 105,813 MW on Thu, 5 PM; MISO load forecast (day-ahead) called it 105,151 MW — 662 MW low.
The same window, split by resource zone — each area’s own curve.
Every hour of the window, shaded by load.
| 0 | 6 | 12 | 18 | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thu, 8/27 |
| Resource zone | Peak (MW) | Peak hour | Low (MW) | Average (MW) |
|---|---|---|---|---|
| 9 | 18,634 | Fri, 3 PM | 13,577 | 16,215 |
| 1 | 14,319 | Fri, 5 PM | 10,064 | 12,406 |
| 7 | 14,119 | Fri, 3 PM | 10,142 | 12,413 |
| 6 | 13,834 | Fri, 4 PM | 9,482 | 11,745 |
| 2 | 9,563 | Fri, 4 PM | 6,768 | 8,381 |
| Forecast | Avg miss (MW) | Avg miss % | Bias | Hours |
|---|---|---|---|---|
| MISO load forecast (day-ahead) | 909 | 1.1% | +589 | 22 |
Each forecast as it stood 24 hours before the hour it predicted, against what settled. Smaller is better on every column. Bias is signed: positive means the forecast ran high.
| Forecast | Produced by | Method | Horizon |
|---|---|---|---|
| Forecast demand | MISO | MISO medium-term load forecast and real-time demand, with zonal forecasts by local resource zone | Through the day ahead, hourly |
MISO publishes point forecasts with no confidence interval. The footprint spans two weather regimes, so errors cluster when a front moves through the middle of the market — the north and south can miss in opposite directions at once.
MISO runs the grid across all or part of fifteen states and Manitoba — the widest north-south footprint of any US market. This page plots MISO's published medium-term load forecast against the five-minute realized demand feed, then breaks the forecast out across the ten local resource zones, from Zone 1 in Minnesota and the Dakotas down to Zone 9 in Louisiana.
MISO's footprint peaks twice: summer air-conditioning load across the whole system, and winter heating load that hits the South hardest. The north-south transmission ties that knit the market together are chronically constrained, so where the demand lands matters as much as how much there is — which is what the zone breakdown shows.
MISO reissues the forecast through the operating day and Ask the Grid keeps each vintage, so every hour shows the most recent number published for it. The realized line comes from MISO's real-time five-minute demand feed.
curl "https://askthegrid.com/api/v1/grid/series?iso=MISO&metric=load_forecast&zone=SYSTEM&hours=168"
Connect your agent to mcp.askthegrid.com and this forecast is a tool call away — the same host Claude and ChatGPT connectors already use.
It is MISO's projection of electricity demand across its fifteen-state footprint, published for the system and for each of the ten local resource zones. MISO commits generation against it; this page plots it against what actually settled so the forecast's track record is visible.
System peaks run roughly 120 GW in summer — second only to PJM among US markets. The zone table splits that across the footprint: the industrial Midwest zones carry the biggest blocks, while the southern zones drive the winter peak.
Ten planning zones MISO uses for resource adequacy, numbered from Zone 1 (Minnesota and the Dakotas) through Zone 10 (Mississippi). They are the granularity at which MISO publishes zonal demand forecasts, so they are the breakdown this page shows.
Plotted window Aug 27, 2:00 AM CDT → Aug 29, 12:00 AM CDT. Reissued through the operating day; the latest vintage for each hour is shown.
| Fri, 8/28 |
|---|
| Sat, 8/29 |
|---|
Darkest cells are the tightest hours. The window peaks at 105,151 MW on Thu, 5 PM, local to the market.
| 3 |
|---|
| 8,428 |
| Fri, 4 PM |
| 6,109 |
| 7,372 |
| 8 | 7,274 | Fri, 4 PM | 4,947 | 6,044 |
|---|
| 4 | 6,347 | Fri, 5 PM | 4,438 | 5,352 |
|---|
| 5 | 6,128 | Fri, 4 PM | 3,529 | 4,842 |
|---|
| 10 | 4,098 | Fri, 1 PM | 2,572 | 3,367 |
|---|