Whose forecast this is
Mostly the market operators’ own. ERCOT issues a seven-day load forecast; the ISOs issue wind, solar, reserve and capacity outlooks for their own footprints; the day-ahead auction clears tomorrow’s prices hour by hour. EIA’s Form 930 roll-up carries the national view no single operator publishes. The exceptions are labelled as exceptions: the net-load pages are arithmetic Ask the Grid does on an operator’s own demand, wind and solar curves, and where we plot a model of our own it is named as ours beside the operator’s. Every page plots the latest vintage issued and keeps the earlier ones.
How far ahead
It depends on the forecast, and each page says which. ERCOT’s wind and solar are intraday; the day-ahead auction reaches tomorrow; demand, wind and solar run out to seven days; NYISO’s maintenance schedule reaches about a month. Each page also carries what the operator says about its own uncertainty — which is usually that it publishes a point forecast and attaches none.
What’s covered
41 forecast pages across 8 markets — CAISO, ERCOT, ISO-NE, MISO, NYISO, PJM, and SPP, plus a national Lower-48 view — in 8 kinds: demand, wind, solar, grid conditions, net load, outages, temperature, and price. The archive below is the whole list, filterable by market or type.
