ISO/RTO

Independent System Operators and Regional Transmission Organizations - the entities that run competitive wholesale markets and grid operations over a footprint.

CAISO and PJM are the two ISO/RTO data sources in this slice, with PJM the largest US RTO spanning 14 jurisdictions plus DC.

In this catalog it appears concretely: - PJM Markets & Operations. - PJM short_description — "for the largest US RTO". - CAISO OASIS source_name — "California ISO (CAISO)".

Conventions decide whether two sources can be joined at all. Buy one side of an analysis that ignores this convention and every reconciliation step — calendar alignment, unit conversion, entity matching — lands on your team instead of the vendor's.

The failure mode is concrete: the label appears in a listing, the delivered files tell a different story, and the gap surfaces mid-project when fixing it is most expensive.

You rarely have to take a vendor's word for it. 82.4% of the 1,744 datasets Datadory catalogs are free to access, and PJM Markets & Operations lets you inspect the real artifact before any budget is committed.

Treat every claim of this attribute as testable:

1. Open PJM Markets & Operations and compare its listing against the delivered artifact before paying for a commercial equivalent.
2. Open PJM short_description and confirm its record — "for the largest US RTO" — against the files you actually receive.
3. Open CAISO OASIS source_name and confirm its record — "California ISO (CAISO)" — against the files you actually receive.
4. Pin down update cadence in writing. Across this catalog, 22.6% of 1,744 datasets refresh daily and 64 still arrive only through a manual request form, so ask exactly how fresh each release is.
5. Check whether definitions are verified at all. Field definitions are verified for 1495 of 1,744 datasets (85.7%), and any source you license should meet that bar.
6. Price the delivery route before the license. In this catalog bulk download is the most common access method (725 datasets) ahead of official APIs (574), and 379 sources still require scraping — a maintenance cost that lands on you, not the vendor.

See the term applied to real records: independent-power-producers-energy-traders data.

Adjacent concepts worth reading next: - balancing authority - day-ahead market - PJM Data Miner 2