Every forecast of New York zonal prices on one axis — settled real-time, NYISO's day-ahead auction, and any model published for the same hours — with the track record for each.
The forecast peaks at 80 $/MWh on Mon 4 PM, against a low of 29 $/MWh — a swing of 51 $/MWh across the window. N.Y.C. is the heaviest zone at 217 $/MWh.
Every line above, and who produced it.
What settled — the realized values every forecast here is scored against.
The grid operator's own published forecast for these hours. Source: NYISO.
The grid operator's own published forecast for these hours. Source: NYISO.
The grid operator's own published forecast for these hours. Source: NYISO.
Congestion is why these price apart. Each hub’s settled price with every forecast published for it.
Each day of the window on its own.
Every hour of the window, shaded by load.
| 0 | 6 | 12 | 18 | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sun, 8/9 |
| Zone | Peak ($/MWh) | Peak hour | Low ($/MWh) | Average ($/MWh) |
|---|---|---|---|---|
| N.Y.C. | 217 | Mon 3 PM | 30 | 49 |
| CAPITL | 80 | Mon 4 PM | 29 | 44 |
| WEST | 66 | Mon 5 PM | 27 | 42 |
| HUD VL | 160 | Mon 3 PM | 27 | 47 |
| Forecast | Produced by | Method | Horizon |
|---|---|---|---|
| CAPITL settled | NYISO | NYISO day-ahead and real-time zonal LBMPs | Day-ahead clears once daily; real-time settles every five minutes |
| WEST settled | NYISO | NYISO day-ahead and real-time zonal LBMPs | Day-ahead clears once daily; real-time settles every five minutes |
| HUD VL settled | NYISO | NYISO day-ahead and real-time zonal LBMPs | Day-ahead clears once daily; real-time settles every five minutes |
NYISO publishes cleared prices rather than probabilistic forecasts, so no band is shown for them. New York prices spike hard during summer heat and winter gas constraints.
This shows the settled real-time price for New York's major load zones, the day-ahead price NYISO cleared for the same hours, and any model forecast published alongside them. Where day-ahead and real-time diverge is where the money is.
New York splits sharply upstate to downstate. Cheap generation sits upstate; most demand sits in New York City and on Long Island, and the transmission between them is limited. When those interfaces bind, downstate clears well above upstate — that persistent basis is the defining feature of the market.
NYISO's day-ahead market is a financially binding auction that clears the day before delivery. Its prices are the market's own collective forecast — carrying risk premia and hedging positions that are not pure price expectations, which is exactly why it is worth scoring against what settled.
curl "https://askthegrid.com/api/v1/grid/series?iso=ERCOT&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.
Locational Based Marginal Price — NYISO's term for the price of electricity at a given location, reflecting energy, congestion and losses. It is New York's equivalent of the LMP used in other markets.
Limited transmission into the city, local generation that is more expensive to run, and reliability rules that require capacity to sit inside the load pocket. When the interfaces into downstate bind, the city clears well above upstate zones.
Day-ahead clears in an auction the day before delivery, on expectations. Real-time settles every five minutes on what actually happened. The spread between them is where unforecast outages, weather misses and demand surprises show up.
The scorecard on this page measures it against what settled, over the same hours, with the vintage pinned so it gets no credit for information it did not have at the time.
Plotted window Aug 9, 11:00 PM CDT → Aug 10, 10:55 PM CDT. Real-time updates continuously; day-ahead once per day.
| Mon, 8/10 |
|---|
Darkest cells are the tightest hours. The week peaks at 80 $/MWh on Mon 4 PM, and the daily band across the late afternoon and early evening is the solar ramp-down meeting air-conditioning load.