NYISO · Load
NYISO load by zone
Actual load every five minutes in each of NYISO's eleven zones — New York City, Long Island, the Hudson Valley and the rest of the state.
nyiso-system-loadevery 5 min · 5m rows11 entitiesWhat is in it
- Updates
- every 5 min · 5m rows
- Entities
- 11 entities — N.Y.C., LONGIL, WEST…
- Source timezone
- US Eastern — every timestamp Dryos serves is UTC
- Coverage
- 14 September 2026 to now
- Rows held
- 12,672
- Primary key
- iso, zone, interval_start_utc
What it measures
Every value, its unit, and what the source means by it.
- LoadMW
Actual load in the zone for the interval.
load_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. NYISO's stamps run 00:00 to 23:55 through a day, so the stamp is read as the start.e.g. 2026-09-14T22:20:00Z |
| isorequired | string | Publishing ISO.e.g. NYISO |
| zonerequired | string | Load zone as NYISO names it: CAPITL, CENTRL, DUNWOD, GENESE, HUD VL, LONGIL, MHK VL, MILLWD, N.Y.C., NORTH, WEST — and, in the forecast, NYISO, their sum.e.g. N.Y.C. |
| load_mw | number | Actual load in the zone for the interval, MW.e.g. 9841.2 |
| source_published_at_utc | timestamp | When NYISO published the row. |
| collected_at_utcrequired | timestamp | When Dryos collected this row, UTC. Stamped by the platform, not the collector.e.g. 2026-09-14T22:35:00Z |
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/nyiso-system-load/query?node=N.Y.C.&limit=12"The catalogue entry — every column, its type and the source
curl "https://api.dryos.ai/v1/datasets/nyiso-system-load"Hourly averages for the last day
curl "https://api.dryos.ai/v1/datasets/nyiso-system-load/query?node=N.Y.C.&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 Load been at N.Y.C. 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 NYISO's MIS.
Every other operator's load was here and NYISO's was not. Reconciled against the live files on 2026-09-14: every check passed.
How this stream is checked
- Pulled straight from NYISO MIS · Real-Time Actual Load (P-58B) — 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.
- NYISO stamps its files in Eastern prevailing time with no zone column. Every timestamp Dryos serves is UTC.
Related streams
- NYISO load forecastNYISO
NYISO's hourly load forecast six days ahead for each of its eleven zones and the state, issued each morning — every issue kept.
daily, morning ET · 1h rows12 entitiesnyiso-load-forecast-6day - MISO system loadMISO
MISO-wide real-time demand every five minutes — the number behind the Current Demand tile on MISO's front page.
every 5 min · 5m rows1 entitymiso-system-load - SPP system loadSPP
Load every five minutes in SPP's RTO and in RTO West, with SPP's own short-term forecast for each interval beside it.
every 5 min · 5m rows2 entitiesspp-system-load - CAISO system loadCAISO
CAISO-wide demand every five minutes — the Current demand line on caiso.com's Today's Outlook — flagged on the evenings CAISO is calling on demand response.
every 5 min · 5m rows1 entitycaiso-system-load - PJM load by areaPJM
Real-time load every five minutes in each of PJM's 21 transmission zones, its three regions and the RTO total — telemetry, the number on PJM's own dashboard, not the metered load that settles.
every 5 min · 5m rows25 entitiespjm-system-load - NYISO interface flowsNYISO
Flow every five minutes across each of NYISO's transfer interfaces — Total East, Central East, UPNY-ConEd and the ties with PJM, New England, Ontario and Quebec — against the limits it is held to.
every 5 min · 5m rows19 entitiesnyiso-interface-flows