SPP · Generation
SPP RTO West fuel mix
What is generating in SPP's western market, RTO West, every five minutes — hydro, coal, gas, wind, solar and storage — split into market-dispatched and self-scheduled output. RTO West went live on 1 April 2026.
spp-west-fuel-mixevery 5 min · 5m rows11 entitiesWhat is in it
- Updates
- every 5 min · 5m rows
- Entities
- 11 entities — HYDRO, COAL, WIND…
- Source timezone
- US Central — every timestamp Dryos serves is UTC
- Coverage
- 14 September 2026 to now
- Rows held
- 10,813
- Primary key
- iso, fuel, interval_start_utc
What it measures
Every value, its unit, and what the source means by it.
- OutputMW
Generation from the source in the interval, dispatched and self-scheduled together. Storage is negative while charging.
gen_mw - Market-dispatchedMW
The part of the source's output the market dispatched on price.
gen_market_mw - Self-scheduledMW
The part its owners ran on their own schedule rather than on price.
gen_self_mw
Columns
Exactly what a request answers with, read from the API rather than written here.
| Column | Type | Description |
|---|---|---|
| interval_start_utcrequired | timestamp | Start of the five-minute interval, UTC. SPP labels it by its end.e.g. 2026-09-14T18:10:00Z |
| isorequired | string | Publishing ISO.e.g. SPP |
| fuelrequired | string | Source as SPP names it, upper-snake: COAL, DIESEL_FUEL_OIL, HYDRO, NATURAL_GAS, NUCLEAR, SOLAR, WASTE_DISPOSAL_SERVICES, WIND, WASTE_HEAT, ENERGY_STORAGE, OTHER. Energy storage runs negative while charging.e.g. WIND |
| gen_mw | number | Generation from this source in the interval, MW: the market-dispatched and self-scheduled parts together, which is SPP's own chart figure.e.g. 20772.3 |
| gen_market_mw | number | Of which dispatched by the market, MW (SPP's Market column).e.g. 0.0 |
| gen_self_mw | number | Of which self-scheduled by the resource's owner rather than dispatched, MW (SPP's Self column).e.g. 20772.3 |
| source_published_at_utc | timestamp | When SPP published the row. |
| collected_at_utcrequired | timestamp | When Dryos collected this row, UTC. Stamped by the platform, not the collector.e.g. 2026-09-14T18:17:04Z |
Read it
Public, read-only, no key and no sign-up. Relative times stay relative, so a URL keeps working.
The newest rows
curl "https://api.dryos.ai/v1/datasets/spp-west-fuel-mix/query?node=HYDRO&limit=12"The catalogue entry — every column, its type and the source
curl "https://api.dryos.ai/v1/datasets/spp-west-fuel-mix"Hourly averages for the last day
curl "https://api.dryos.ai/v1/datasets/spp-west-fuel-mix/query?node=HYDRO&start=-24h&interval=1h&agg=avg"Full parameters — bucketing, aggregation, filters and search — are on the API reference.
Ask an agent
The same stream through the Model Context Protocol, so Claude, ChatGPT, Cursor or any MCP client can query it directly.
claude mcp add --transport http dryos https://api.dryos.ai/mcpThen ask:
What has Output been at HYDRO over the last 24 hours, and when did it peak?
Setup for every client is on the MCP server page.
Changes to this collector
A change in the collector is a change in the data. Anyone reading a step in a series is owed the day it moved under them.
- 2026-09-14
First collected, from SPP's marketplace portal.
Every other operator here had a fuel mix and SPP did not. This is RTO West, balancing authority SWPW, live since 2026-04-01. Reconciled against a live response on 2026-09-14: schema, nulls, primary key, value bands and freshness passed, eleven fuels an interval, and market plus self equal to SPP's own chart figure.
How this stream is checked
- Pulled straight from SPP Marketplace Portal · Generation Mix Historical (SWPW) — no reseller in between — and compared against that file before it is served.
- Null means the source did not report it — never zero.
- A reading lands every 5 min; the interval timestamp is the start of the interval, in UTC.
- SPP publishes on US Central prevailing time, with a UTC column on every row. Every timestamp Dryos serves is UTC.
Related streams
- SPP wind and solar curtailmentsSPP
Wind and solar curtailed every five minutes in SPP's RTO and RTO West — by redispatch, manually by the operator, and for energy — a day behind.
daily, a day behind · 5m rows2 entitiesspp-curtailments - SPP wind and solar outputSPP
Wind and solar output every five minutes in SPP's RTO and in RTO West — the actuals SPP publishes beside its short-term resource forecast.
every 5 min · 5m rows2 entitiesspp-renewables-actual - SPP short-term wind and solar forecastSPP
SPP's wind and solar forecast four hours ahead at five-minute grain, for the RTO and RTO West, every five-minute publication kept.
every 5 min · 5m rows2 entitiesspp-renewables-forecast-5min - SPP seven-day wind and solar forecastSPP
SPP's hourly wind and solar forecast seven days ahead for the RTO and RTO West, every hourly publication kept.
hourly · 1h rows2 entitiesspp-renewables-forecast-7day - SPP fuel mixSPP
What is generating across SPP's RTO every five minutes — wind, gas, coal, nuclear, hydro, solar, storage and the rest — with each source split into what the market dispatched and what its owner self-scheduled.
every 5 min · 5m rows11 entitiesspp-fuel-mix - SPP real-time LMPSPP
Real-time balancing market prices at every SPP settlement location — the trading hubs, load areas, resources, demand response and the interfaces with its neighbours — with the energy, congestion and loss components, every five minutes.
every 5 min · 5m rows1,612 entitiesspp-realtime-lmp