CAISO · Generation
CAISO fuel mix
What is generating across CAISO every five minutes — solar, wind, geothermal, biomass, biogas, small and large hydro, coal, nuclear, gas, batteries and net imports. From the files behind caiso.com's Today's Outlook; batteries run negative while they charge.
caiso-fuel-mixevery 5 min · 5m rows13 entitiesWhat is in it
- Updates
- every 5 min · 5m rows
- Entities
- 13 entities — SOLAR, NATURAL_GAS, BATTERIES…
- Source timezone
- US Pacific — every timestamp Dryos serves is UTC
- Coverage
- 13 September 2026 to now
- Rows held
- 18,096
- 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 at the reading. Batteries are negative while charging, solar slightly negative at night, and imports are net.
gen_mw
Columns
Exactly what a request answers with, read from the API rather than written here.
| Column | Type | Description |
|---|---|---|
| interval_start_utcrequired | timestamp | Time of the reading, UTC, from CAISO's Pacific clock and the file's date.e.g. 2026-09-14T16:40:00Z |
| isorequired | string | Publishing ISO.e.g. CAISO |
| fuelrequired | string | Source as CAISO names it, upper-snake: SOLAR, WIND, GEOTHERMAL, BIOMASS, BIOGAS, SMALL_HYDRO, COAL, NUCLEAR, NATURAL_GAS, LARGE_HYDRO, BATTERIES, IMPORTS, OTHER. Batteries run negative while charging; imports are net.e.g. SOLAR |
| gen_mwrequired | number | Generation from this source at the reading, MW.e.g. 21887 |
| source_published_at_utc | timestamp | Last-Modified of the file the row was read from, UTC. |
| collected_at_utcrequired | timestamp | When Dryos collected this row, UTC. Stamped by the platform, not the collector.e.g. 2026-09-14T16:45:12Z |
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/caiso-fuel-mix/query?node=SOLAR&limit=12"The catalogue entry — every column, its type and the source
curl "https://api.dryos.ai/v1/datasets/caiso-fuel-mix"Hourly averages for the last day
curl "https://api.dryos.ai/v1/datasets/caiso-fuel-mix/query?node=SOLAR&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 SOLAR 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 caiso.com's Today's Outlook files.
The fuel mix every other operator here already had. CAISO's posted readings flicker by a few MW from one publication to the next; a row holds what CAISO said within the hour.
How this stream is checked
- Pulled straight from caiso.com · Today's Outlook · fuelsource.csv — 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.
- CAISO's market clock is US Pacific; OASIS answers in UTC. Every timestamp Dryos serves is UTC.
Related streams
- CAISO five-minute wind and solar forecastCAISO
The wind and solar forecast CAISO's real-time dispatch runs on, every five minutes, for NP15, SP15, ZP26 and every Western EIM balancing authority.
every 5 min · 5m rows24 entitiescaiso-renewables-forecast-5min - CAISO fifteen-minute wind and solar forecastCAISO
The wind and solar forecast behind CAISO's fifteen-minute market, for NP15, SP15, ZP26 and every Western EIM balancing authority.
every 15 min, ~25 min ahead · 15m rows24 entitiescaiso-renewables-forecast-15min - CAISO hourly actual wind and solarCAISO
Hourly actual wind and solar generation at CAISO's three trading hubs.
hourly, ~1 h after the hour · 1h rows3 entitiescaiso-renewables-actual-hourly - CAISO day-ahead wind and solar forecastCAISO
CAISO's hourly day-ahead wind and solar forecast for its three hubs (and one area OASIS spells AVA_), kept as snapshots stamped when Dryos first saw each value.
checked every 15 min, two days out · 1h rows4 entitiescaiso-renewables-forecast-dam - CAISO hour-ahead wind and solar forecastCAISO
CAISO's hourly hour-ahead wind and solar forecast for its three hubs, kept as snapshots stamped when Dryos first saw each value.
checked every 15 min · 1h rows4 entitiescaiso-renewables-forecast-hasp - Fuel mixERCOT
Output by fuel type across the interconnect, every five minutes.
every 5 min · 5m rows8 entitiesercot-fuel-mix