Real-Time Ancillary Service Prices

NYISO real-time ancillary-service prices by pricing location, keyed by PTID, with separate columns for 10-minute spinning reserve, 10-minute non-synchronous reserve, 30-minute operating reserve, regulation capacity, and regulation movement.

Ancillary Services data NYISO market

Query with the agent

Native record

event_time x ptid

5-minute publication cadence

Evidence

Observed market data

Published observations from the named source

Time basis

Point-in-time records

UTC · event_time

Overview

Use this with energy LBMP when analyzing reserve scarcity, regulation value, or storage/operator behavior beyond energy-only dispatch.

Query contract

Preserve one canonical row per (event_time, ptid) before aggregating.

Analysis rules

Group only after preserving the declared grain: event_time, ptid.

Access

Query from your own tools

Use the guarded HTTP endpoint directly, or connect an MCP client and load the dataset contract with describe_data before calling query_data.

NYISO MCP API reference

HTTP endpoint

POST /api/v1/datasets/nyiso_rt_ancillary_prices/query

Schema10

Column

Type

event_timeDateTime64(6, 'UTC')

time_zoneNullable(String)

zone_nameNullable(String)

ptidInt64

spin_10_priceNullable(Float64)

nonsync_10_priceNullable(Float64)

operating_30_priceNullable(Float64)

regulation_capacity_priceNullable(Float64)

regulation_movement_priceNullable(Float64)

ingested_atDateTime64(6, 'UTC')

Sample data

event_time	time_zone	zone_name	ptid	regulation_capacity_price	regulation_movement_price	ingested_at
2026-10-01 15:00:00.000000	EDT	LONGIL	61762	11	0.15	2026-10-01 15:00:17.953789
2026-10-01 15:00:00.000000	EDT	N.Y.C.	61761	11	0.15	2026-10-01 15:00:17.953789
2026-10-01 15:00:00.000000	EDT	DUNWOD	61760	11	0.15	2026-10-01 15:00:17.953789
2026-10-01 15:00:00.000000	EDT	MILLWD	61759	11	0.15	2026-10-01 15:00:17.953789
2026-10-01 15:00:00.000000	EDT	HUD VL	61758	11	0.15	2026-10-01 15:00:17.953789
2026-10-01 15:00:00.000000	EDT	CAPITL	61757	11	0.15	2026-10-01 15:00:17.953789
2026-10-01 15:00:00.000000	EDT	MHK VL	61756	11	0.15	2026-10-01 15:00:17.953789
2026-10-01 15:00:00.000000	EDT	NORTH	61755	11	0.15	2026-10-01 15:00:17.953789
2026-10-01 15:00:00.000000	EDT	CENTRL	61754	11	0.15	2026-10-01 15:00:17.953789
2026-10-01 15:00:00.000000	EDT	GENESE	61753	11	0.15	2026-10-01 15:00:17.953789
2026-10-01 15:00:00.000000	EDT	WEST	61752	11	0.15	2026-10-01 15:00:17.953789
2026-10-01 14:55:00.000000	EDT	LONGIL	61762	11	0.15	2026-10-01 15:00:17.953789
2026-10-01 14:55:00.000000	EDT	N.Y.C.	61761	11	0.15	2026-10-01 15:00:17.953789
2026-10-01 14:55:00.000000	EDT	DUNWOD	61760	11	0.15	2026-10-01 15:00:17.953789
2026-10-01 14:55:00.000000	EDT	MILLWD	61759	11	0.15	2026-10-01 15:00:17.953789
2026-10-01 14:55:00.000000	EDT	HUD VL	61758	11	0.15	2026-10-01 15:00:17.953789
2026-10-01 14:55:00.000000	EDT	CAPITL	61757	11	0.15	2026-10-01 15:00:17.953789
2026-10-01 14:55:00.000000	EDT	MHK VL	61756	11	0.15	2026-10-01 15:00:17.953789
2026-10-01 14:55:00.000000	EDT	NORTH	61755	11	0.15	2026-10-01 15:00:17.953789
2026-10-01 14:55:00.000000	EDT	CENTRL	61754	11	0.15	2026-10-01 15:00:17.953789
2026-10-01 14:55:00.000000	EDT	GENESE	61753	11	0.15	2026-10-01 15:00:17.953789
2026-10-01 14:55:00.000000	EDT	WEST	61752	11	0.15	2026-10-01 15:00:17.953789
2026-10-01 14:50:00.000000	EDT	LONGIL	61762	11	0.15	2026-10-01 15:00:17.953789
2026-10-01 14:50:00.000000	EDT	N.Y.C.	61761	11	0.15	2026-10-01 15:00:17.953789
2026-10-01 14:50:00.000000	EDT	DUNWOD	61760	11	0.15	2026-10-01 15:00:17.953789

Coverage

83.1% complete1,627 gap days8,016 days with data

Show coverage history

Coverage: 83.1%Days with data: 8,016Gaps: 1,627

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Related ancillary services data

Related ancillary services data
Dataset	Description
Day-Ahead Ancillary Service PricesNYISO · hourly (DAM)	NYISO day-ahead ancillary-service prices by pricing location, keyed by PTID, with separate columns for 10-minute spinning reserve, 10-minute non-synchronous reserve, 30-minute operating reserve, and regulation capacity. These prices show the reserve and regulation stack cleared before the operating day, complementing day-ahead energy LBMP for full market-context analysis.
NYISO Day-Ahead Ancillary PricesNYISO · hourly (day-ahead)	Cleared day-ahead ancillary-service capacity prices in NYISO, one row per hour, zone and product. 3,918,376 rows, 2016-06 to the next delivery day. Products: spin, non_spin, operating_30, reg_capacity. 11 NYISO zones. price_usd_mw is a price for CAPACITY held in reserve — dollars per megawatt of commitment — not dollars per megawatt-hour of energy delivered. The two are different units and are not comparable to an LMP.
Ancillary Service Market Clearing PricesSPP · 5-minute (RTBM) and hourly (Day-Ahead)	Cleared ancillary-service prices by SPP reserve zone for both the real-time balancing market and the day-ahead market. SPP's product set does not map onto other ISOs': regulation clears as a separate service (capacity) price and mileage price in each direction (reg_up_service, reg_up_mile, reg_dn_service, reg_dn_mile), alongside ramp up and down, spinning, supplemental, and uncertainty products. IMPORTANT: reserve_zone mixes two grains. It carries the numeric ancillary reserve zones (1 through 5 under the SPP balancing authority, 21 under the separate SWPW balancing authority) AND the two balancing-authority roll-ups, 'SPP' and 'SWPW', whose prices equal those of their member zones. Aggregating across every value of reserve_zone double-counts the market.
Ancillary Service PricesERCOT · hourly (DAM)	Hourly market clearing prices for the ancillary services ERCOT procures alongside energy in its Day-Ahead Market, broken out by product: Regulation Up (RegUp), Regulation Down (RegDown), Responsive Reserve (RRS), Non-Spinning Reserve (NSPIN), and the ERCOT Contingency Reserve Service (ECRS). These prices represent what the grid pays per megawatt to hold capacity in reserve for frequency control and contingency response, separate from the energy itself. Watching them shows when reserves are scarce and expensive (often during tight or volatile conditions), which informs how generators and storage operators allocate capacity between energy and reserve markets, and gives researchers a read on the cost of keeping the Texas grid reliable. ECRS, added in 2023, is the newest of these products and has at times cleared at notably high levels.