CAISO · Generation
CAISO day-ahead wind and solar forecast
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.
caiso-renewables-forecast-damchecked every 15 min, two days out · 1h rows4 entitiesWhat is in it
- Updates
- checked every 15 min, two days out · 1h rows
- Entities
- 4 entities — SP15, NP15, ZP26…
- Source timezone
- US Pacific — every timestamp Dryos serves is UTC
- Coverage
- 14 September 2026 to now
- Rows held
- 24,787
- Primary key
- iso, zone, interval_start_utc, source_published_at_utc
What it measures
Every value, its unit, and what the source means by it.
- SolarMW
Forecast solar for the hub and hour, as of this snapshot.
solar_mw - WindMW
Forecast wind for the hub and hour, as of this snapshot.
wind_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 interval, UTC, read from OASIS's GMT column.e.g. 2026-09-14T20:00:00Z |
| isorequired | string | Publishing ISO.e.g. CAISO |
| zonerequired | string | Trading hub or area as CAISO names it (TRADING_HUB): NP15, SP15 and ZP26 for CAISO, and each Western EIM balancing authority. The day-ahead and hour-ahead solar forecasts carry one spelled AVA_, kept as published.e.g. SP15 |
| wind_mw | number | Wind for the hub or area, MW.e.g. 1339.67 |
| solar_mw | number | Solar for the hub or area, MW. A few MW negative at night: the plants' own draw.e.g. 13401.81 |
| source_published_at_utcrequired | timestamp | When Dryos first saw this value, UTC — the vintage. OASIS overwrites a forecast in place and stamps no issue time, so this is Dryos's first sight, to within fifteen minutes, never CAISO's issue time. One interval carries a row per value it has held.e.g. 2026-09-14T17:37:00Z |
| collected_at_utcrequired | timestamp | When Dryos collected this row, UTC. Stamped by the platform, not the collector.e.g. 2026-09-14T17:37:12Z |
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-renewables-forecast-dam/query?node=SP15&limit=12"The catalogue entry — every column, its type and the source
curl "https://api.dryos.ai/v1/datasets/caiso-renewables-forecast-dam"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 Solar been at SP15 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 OASIS.
OASIS overwrites these forecasts in place with no issue time, so they are kept as snapshots stamped with Dryos's first sight of each value.
How this stream is checked
- Pulled straight from CAISO OASIS · SLD_REN_FCST (DAM) — 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 checked every 15 min, two days out; 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.
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