Data Directory

The Data Directory provides a streamlined search for data posted on As soon as the user enters a search term, the data dictionary immediately begins filtering the list of data.

The data comes from a range of PJM categories, such as Day-Ahead and Real-Time Energy Markets, historic data, Financial Transmission Rights and Operations.

How PJM updates the information depends on the need. Some data, such as the interregional data map, is updated every five minutes. Other data, such as capacity by fuel type, is updated yearly.

A listing of one-time PJM data postings is available on the One-Time Data Request page.