Intraday Survey
Five publication cycles per business day capturing pre-dawn, solar ramp, midday, afternoon, and evening pricing — with ISO-level enrichment for real-time LMP, solar generation, battery dispatch, and wind at each hub. The duck curve means a single daily print is the least representative moment.
Five snapshots of the day.
Each cycle is a VWAP snapshot across all eligible submissions in a defined window, enriched with contemporaneous ISO conditions.
Every cycle, every hub.
- ✓ Real-time LMP at nearest ISO node (5-minute resolution)
- ✓ Solar generation (ERCOT, CAISO, MISO, SPP)
- ✓ Battery storage dispatch (charge/discharge MW)
- ✓ Wind generation at contemporaneous dispatch
- ✓ Implied heat rate (peaker economics)
- ✓ Load forecast vs actual delta
Single price ≠ reality.
A hub's price at 08:00 (gas-on-gas wind-pushed low) is often $0.50+ below its 17:00 print (peaker-demand high). NGI publishes one daily price — we publish five intraday cycles so traders can see the actual shape of the day.
Cycles C3 and C4 drive the Duck Curve Index — the daily premium capturing solar-ramp displacement. Every cycle feeds the Composite weighted baskets used by power-asset schedulers.
Every intraday cycle applies the same 11 FERC exclusion checks as the NatGasIQ Daily Price Index. All submissions archived for 7-year audit retention.
See every moment of the day.
Start with a 30-day trial. All five intraday cycles, every covered hub, every business day.