Live Ancillary-Service Prices

Real-time and day-ahead ancillary-service clearing prices for each of MISO's eight reserve zones.

Ancillary Services data MISO market

Query with the agent

Native record

publisher snapshot x market run x reserve zone

1-minute snapshots publication cadence

Evidence

Mixed evidence

Multiple evidence types kept distinct in the contract

Time basis

Point-in-time records

UTC · event_time

Overview

Keep zone and product explicit; averaging reserve-zone prices would create a market-wide price MISO does not publish.

Query contract

Select one latest ref_id/ingested_at snapshot and filter market_run before comparing product prices by reserve zone.

Analysis rules

Keep all eight reserve zones explicit. Do not average zone prices into a market-wide price MISO does not publish.
Keep real-time and day-ahead market runs separate.

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.

MISO MCP API reference

HTTP endpoint

POST /api/v1/datasets/miso_live_ancillary_services/query

Schema17

Column

Type

event_timeDateTime64(6, 'UTC')

ref_idLowCardinality(String)

market_dayNullable(String)

market_runLowCardinality(String)

raw_intervalString

zoneLowCardinality(String)

generation_regulation_mcpNullable(Float64)

generation_spinning_mcpNullable(Float64)

generation_supplemental_mcpNullable(Float64)

short_term_reserve_mcpNullable(Float64)

demand_regulation_mcpNullable(Float64)

demand_spinning_mcpNullable(Float64)

demand_supplemental_mcpNullable(Float64)

ramp_up_mcpNullable(Float64)

ramp_down_mcpNullable(Float64)

raw_record_jsonString

ingested_atDateTime64(6, 'UTC')

Sample data

event_time	ref_id	market_day	market_run	raw_interval	zone	generation_regulation_mcp	generation_spinning_mcp	generation_supplemental_mcp	short_term_reserve_mcp	demand_regulation_mcp	demand_spinning_mcp	demand_supplemental_mcp	ramp_up_mcp	raw_record_json	ingested_at
2026-09-27 21:35:00.000000	27-Sep-2026 - Interval 16:35 EST	09-27-2026	RealTimeMCP	16:35	6	17.4	1	0.2	0.16	17.4	1	0.2	0	{"DemandRegMcp":"17.40","DemandSpinMcp":"1.00","DemandSuppMcp":"0.20","GenRegMCP":"17.40","GenSpinMCP":"1.00","GenSuppMCP":"0.20","RcpDownMcp":"0.00","RcpUpMcp":"0.00","StrMcp":"0.16","number":"6"}	2026-09-27 21:41:08.978909
2026-09-27 21:35:00.000000	27-Sep-2026 - Interval 16:35 EST	09-27-2026	DayAheadMCP	17	1	23.6	7	0.75	0.25	23.6	7	0.75	9	{"DemandRegMcp":"23.60","DemandSpinMcp":"7.00","DemandSuppMcp":"0.75","GenRegMCP":"23.60","GenSpinMCP":"7.00","GenSuppMCP":"0.75","RcpDownMcp":"0.00","RcpUpMcp":"9.00","StrMcp":"0.25","number":"1"}	2026-09-27 21:41:08.978909
2026-09-27 21:35:00.000000	27-Sep-2026 - Interval 16:35 EST	09-27-2026	DayAheadMCP	17	2	23.6	7	0.75	0.25	23.6	7	0.75	9	{"DemandRegMcp":"23.60","DemandSpinMcp":"7.00","DemandSuppMcp":"0.75","GenRegMCP":"23.60","GenSpinMCP":"7.00","GenSuppMCP":"0.75","RcpDownMcp":"0.00","RcpUpMcp":"9.00","StrMcp":"0.25","number":"2"}	2026-09-27 21:41:08.978909
2026-09-27 21:35:00.000000	27-Sep-2026 - Interval 16:35 EST	09-27-2026	DayAheadMCP	17	3	23.6	7	0.75	0.25	23.6	7	0.75	9	{"DemandRegMcp":"23.60","DemandSpinMcp":"7.00","DemandSuppMcp":"0.75","GenRegMCP":"23.60","GenSpinMCP":"7.00","GenSuppMCP":"0.75","RcpDownMcp":"0.00","RcpUpMcp":"9.00","StrMcp":"0.25","number":"3"}	2026-09-27 21:41:08.978909
2026-09-27 21:35:00.000000	27-Sep-2026 - Interval 16:35 EST	09-27-2026	DayAheadMCP	17	4	23.6	7	0.75	0.25	23.6	7	0.75	9	{"DemandRegMcp":"23.60","DemandSpinMcp":"7.00","DemandSuppMcp":"0.75","GenRegMCP":"23.60","GenSpinMCP":"7.00","GenSuppMCP":"0.75","RcpDownMcp":"0.00","RcpUpMcp":"9.00","StrMcp":"0.25","number":"4"}	2026-09-27 21:41:08.978909
2026-09-27 21:35:00.000000	27-Sep-2026 - Interval 16:35 EST	09-27-2026	DayAheadMCP	17	5	23.6	7	0.75	0.25	23.6	7	0.75	9	{"DemandRegMcp":"23.60","DemandSpinMcp":"7.00","DemandSuppMcp":"0.75","GenRegMCP":"23.60","GenSpinMCP":"7.00","GenSuppMCP":"0.75","RcpDownMcp":"0.00","RcpUpMcp":"9.00","StrMcp":"0.25","number":"5"}	2026-09-27 21:41:08.978909
2026-09-27 21:35:00.000000	27-Sep-2026 - Interval 16:35 EST	09-27-2026	RealTimeMCP	16:35	8	17.4	1	0.2	0.16	17.4	1	0.2	0	{"DemandRegMcp":"17.40","DemandSpinMcp":"1.00","DemandSuppMcp":"0.20","GenRegMCP":"17.40","GenSpinMCP":"1.00","GenSuppMCP":"0.20","RcpDownMcp":"0.00","RcpUpMcp":"0.00","StrMcp":"0.16","number":"8"}	2026-09-27 21:41:08.978909
2026-09-27 21:35:00.000000	27-Sep-2026 - Interval 16:35 EST	09-27-2026	DayAheadMCP	17	7	23.6	7	0.75	4.9	23.6	7	0.75	9	{"DemandRegMcp":"23.60","DemandSpinMcp":"7.00","DemandSuppMcp":"0.75","GenRegMCP":"23.60","GenSpinMCP":"7.00","GenSuppMCP":"0.75","RcpDownMcp":"0.00","RcpUpMcp":"9.00","StrMcp":"4.90","number":"7"}	2026-09-27 21:41:08.978909
2026-09-27 21:35:00.000000	27-Sep-2026 - Interval 16:35 EST	09-27-2026	DayAheadMCP	17	8	23.6	7	0.75	4.9	23.6	7	0.75	9	{"DemandRegMcp":"23.60","DemandSpinMcp":"7.00","DemandSuppMcp":"0.75","GenRegMCP":"23.60","GenSpinMCP":"7.00","GenSuppMCP":"0.75","RcpDownMcp":"0.00","RcpUpMcp":"9.00","StrMcp":"4.90","number":"8"}	2026-09-27 21:41:08.978909
2026-09-27 21:35:00.000000	27-Sep-2026 - Interval 16:35 EST	09-27-2026	RealTimeMCP	16:35	1	17.4	1	0.2	0.16	17.4	1	0.2	0	{"DemandRegMcp":"17.40","DemandSpinMcp":"1.00","DemandSuppMcp":"0.20","GenRegMCP":"17.40","GenSpinMCP":"1.00","GenSuppMCP":"0.20","RcpDownMcp":"0.00","RcpUpMcp":"0.00","StrMcp":"0.16","number":"1"}	2026-09-27 21:41:08.978909
2026-09-27 21:35:00.000000	27-Sep-2026 - Interval 16:35 EST	09-27-2026	RealTimeMCP	16:35	2	17.4	1	0.2	0.16	17.4	1	0.2	0	{"DemandRegMcp":"17.40","DemandSpinMcp":"1.00","DemandSuppMcp":"0.20","GenRegMCP":"17.40","GenSpinMCP":"1.00","GenSuppMCP":"0.20","RcpDownMcp":"0.00","RcpUpMcp":"0.00","StrMcp":"0.16","number":"2"}	2026-09-27 21:41:08.978909
2026-09-27 21:35:00.000000	27-Sep-2026 - Interval 16:35 EST	09-27-2026	RealTimeMCP	16:35	3	17.4	1	0.2	0.16	17.4	1	0.2	0	{"DemandRegMcp":"17.40","DemandSpinMcp":"1.00","DemandSuppMcp":"0.20","GenRegMCP":"17.40","GenSpinMCP":"1.00","GenSuppMCP":"0.20","RcpDownMcp":"0.00","RcpUpMcp":"0.00","StrMcp":"0.16","number":"3"}	2026-09-27 21:41:08.978909
2026-09-27 21:35:00.000000	27-Sep-2026 - Interval 16:35 EST	09-27-2026	RealTimeMCP	16:35	4	17.4	1	0.2	0.16	17.4	1	0.2	0	{"DemandRegMcp":"17.40","DemandSpinMcp":"1.00","DemandSuppMcp":"0.20","GenRegMCP":"17.40","GenSpinMCP":"1.00","GenSuppMCP":"0.20","RcpDownMcp":"0.00","RcpUpMcp":"0.00","StrMcp":"0.16","number":"4"}	2026-09-27 21:41:08.978909
2026-09-27 21:35:00.000000	27-Sep-2026 - Interval 16:35 EST	09-27-2026	RealTimeMCP	16:35	5	17.4	1	0.2	0.16	17.4	1	0.2	0	{"DemandRegMcp":"17.40","DemandSpinMcp":"1.00","DemandSuppMcp":"0.20","GenRegMCP":"17.40","GenSpinMCP":"1.00","GenSuppMCP":"0.20","RcpDownMcp":"0.00","RcpUpMcp":"0.00","StrMcp":"0.16","number":"5"}	2026-09-27 21:41:08.978909
2026-09-27 21:35:00.000000	27-Sep-2026 - Interval 16:35 EST	09-27-2026	DayAheadMCP	17	6	23.6	7	0.75	4.9	23.6	7	0.75	9	{"DemandRegMcp":"23.60","DemandSpinMcp":"7.00","DemandSuppMcp":"0.75","GenRegMCP":"23.60","GenSpinMCP":"7.00","GenSuppMCP":"0.75","RcpDownMcp":"0.00","RcpUpMcp":"9.00","StrMcp":"4.90","number":"6"}	2026-09-27 21:41:08.978909
2026-09-27 21:35:00.000000	27-Sep-2026 - Interval 16:35 EST	09-27-2026	RealTimeMCP	16:35	7	17.4	1	0.2	0.16	17.4	1	0.2	0	{"DemandRegMcp":"17.40","DemandSpinMcp":"1.00","DemandSuppMcp":"0.20","GenRegMCP":"17.40","GenSpinMCP":"1.00","GenSuppMCP":"0.20","RcpDownMcp":"0.00","RcpUpMcp":"0.00","StrMcp":"0.16","number":"7"}	2026-09-27 21:41:08.978909
2026-09-27 21:35:00.000000	27-Sep-2026 - Interval 16:35 EST	09-27-2026	DayAheadMCP	17	1	23.6	7	0.75	0.25	23.6	7	0.75	9	{"DemandRegMcp":"23.60","DemandSpinMcp":"7.00","DemandSuppMcp":"0.75","GenRegMCP":"23.60","GenSpinMCP":"7.00","GenSuppMCP":"0.75","RcpDownMcp":"0.00","RcpUpMcp":"9.00","StrMcp":"0.25","number":"1"}	2026-09-27 21:42:06.602640
2026-09-27 21:35:00.000000	27-Sep-2026 - Interval 16:35 EST	09-27-2026	DayAheadMCP	17	2	23.6	7	0.75	0.25	23.6	7	0.75	9	{"DemandRegMcp":"23.60","DemandSpinMcp":"7.00","DemandSuppMcp":"0.75","GenRegMCP":"23.60","GenSpinMCP":"7.00","GenSuppMCP":"0.75","RcpDownMcp":"0.00","RcpUpMcp":"9.00","StrMcp":"0.25","number":"2"}	2026-09-27 21:42:06.602640
2026-09-27 21:35:00.000000	27-Sep-2026 - Interval 16:35 EST	09-27-2026	DayAheadMCP	17	3	23.6	7	0.75	0.25	23.6	7	0.75	9	{"DemandRegMcp":"23.60","DemandSpinMcp":"7.00","DemandSuppMcp":"0.75","GenRegMCP":"23.60","GenSpinMCP":"7.00","GenSuppMCP":"0.75","RcpDownMcp":"0.00","RcpUpMcp":"9.00","StrMcp":"0.25","number":"3"}	2026-09-27 21:42:06.602640
2026-09-27 21:35:00.000000	27-Sep-2026 - Interval 16:35 EST	09-27-2026	DayAheadMCP	17	4	23.6	7	0.75	0.25	23.6	7	0.75	9	{"DemandRegMcp":"23.60","DemandSpinMcp":"7.00","DemandSuppMcp":"0.75","GenRegMCP":"23.60","GenSpinMCP":"7.00","GenSuppMCP":"0.75","RcpDownMcp":"0.00","RcpUpMcp":"9.00","StrMcp":"0.25","number":"4"}	2026-09-27 21:42:06.602640
2026-09-27 21:35:00.000000	27-Sep-2026 - Interval 16:35 EST	09-27-2026	DayAheadMCP	17	5	23.6	7	0.75	0.25	23.6	7	0.75	9	{"DemandRegMcp":"23.60","DemandSpinMcp":"7.00","DemandSuppMcp":"0.75","GenRegMCP":"23.60","GenSpinMCP":"7.00","GenSuppMCP":"0.75","RcpDownMcp":"0.00","RcpUpMcp":"9.00","StrMcp":"0.25","number":"5"}	2026-09-27 21:42:06.602640
2026-09-27 21:35:00.000000	27-Sep-2026 - Interval 16:35 EST	09-27-2026	DayAheadMCP	17	6	23.6	7	0.75	4.9	23.6	7	0.75	9	{"DemandRegMcp":"23.60","DemandSpinMcp":"7.00","DemandSuppMcp":"0.75","GenRegMCP":"23.60","GenSpinMCP":"7.00","GenSuppMCP":"0.75","RcpDownMcp":"0.00","RcpUpMcp":"9.00","StrMcp":"4.90","number":"6"}	2026-09-27 21:42:06.602640
2026-09-27 21:35:00.000000	27-Sep-2026 - Interval 16:35 EST	09-27-2026	DayAheadMCP	17	7	23.6	7	0.75	4.9	23.6	7	0.75	9	{"DemandRegMcp":"23.60","DemandSpinMcp":"7.00","DemandSuppMcp":"0.75","GenRegMCP":"23.60","GenSpinMCP":"7.00","GenSuppMCP":"0.75","RcpDownMcp":"0.00","RcpUpMcp":"9.00","StrMcp":"4.90","number":"7"}	2026-09-27 21:42:06.602640
2026-09-27 21:35:00.000000	27-Sep-2026 - Interval 16:35 EST	09-27-2026	DayAheadMCP	17	8	23.6	7	0.75	4.9	23.6	7	0.75	9	{"DemandRegMcp":"23.60","DemandSpinMcp":"7.00","DemandSuppMcp":"0.75","GenRegMCP":"23.60","GenSpinMCP":"7.00","GenSuppMCP":"0.75","RcpDownMcp":"0.00","RcpUpMcp":"9.00","StrMcp":"4.90","number":"8"}	2026-09-27 21:42:06.602640
2026-09-27 21:35:00.000000	27-Sep-2026 - Interval 16:35 EST	09-27-2026	RealTimeMCP	16:35	1	17.4	1	0.2	0.16	17.4	1	0.2	0	{"DemandRegMcp":"17.40","DemandSpinMcp":"1.00","DemandSuppMcp":"0.20","GenRegMCP":"17.40","GenSpinMCP":"1.00","GenSuppMCP":"0.20","RcpDownMcp":"0.00","RcpUpMcp":"0.00","StrMcp":"0.16","number":"1"}	2026-09-27 21:42:06.602640

Coverage

100.0% complete0 gap days47 days with data

Show coverage history

Coverage: 100.0%Days with data: 47Gaps: 0

2026

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Related ancillary services data

Related ancillary services data
Dataset	Description
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.
Ancillary-Service Clearing PricesCAISO · hourly	CAISO ancillary-service market clearing prices by delivery hour, market run, region, and product. Despite the legacy column name mw_or_price, values in this table are prices in USD/MWh; zero is a valid clearing price.
Ancillary-Service ProcurementCAISO · hourly	CAISO ancillary-service procurement quantities by delivery hour, market run, region, product, and result type.