> ## Documentation Index
> Fetch the complete documentation index at: https://data.ornn.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Power Markets

> Wholesale US power prices and hourly grid-operations context.

The Power Markets pages on [data.ornn.com/analytics/power](https://data.ornn.com/analytics/power) plot daily wholesale prices across the seven tracked US hubs: six ICE exchange-traded peak products, plus ERCOT's day-ahead clearing price against grid load. History starts 2017-01-03. Premium and Full see the price charts; the hourly Load vs Forecast and Fuel Mix views require Full.

<Note>
  Power Markets has a REST API but no MCP tool. Premium and Full keys can read daily prices at `GET /api/power/markets`. Full keys can also read hourly grid operations at `GET /api/power/load` and `GET /api/power/fuel-mix`; a Premium key receives `403` on those two routes. CSV/XLSX export from the charts is Full-only.
</Note>

The GPU [forward curve](/docs/access-tiers) is a separate product. Published GPU forward marks are served at `GET /api/forward` for paying keys and as the MCP tool `get_forward_curve`. They are not a power product. Do not look for power forwards on that route.

## What the charts show

| Field | Meaning                                               |
| ----- | ----------------------------------------------------- |
| `d`   | Trade or clearing date.                               |
| `p`   | Peak-block price in USD per MWh, the headline series. |
| `o`   | Off-peak price, ERCOT only.                           |
| `t`   | Traded volume in GWh, exchange-traded hubs only.      |
| `l`   | System load delivered, clearing hubs only.            |
| `g`   | Trade count behind the print.                         |

Tracked hubs: WECC Northwest (Mid C Peak), PJM, CAISO, ISO-NE, WECC Southwest (Palo Verde Peak), MISO, ERCOT (HB\_NORTH). See the [data dictionary](/docs/data-dictionary) §11 for the field list and access columns.

The series is maintained by scheduled ingestion into the live data store. ICE-published hub workbooks can lag the trade date by weeks, while EIA operations feeds are hourly. Each response includes source and freshness metadata; the page stamps the latest source observation, not "today".

MISO trades thinly on ICE. Interpret its price together with traded volume.