Authenticate to PJM Data Miner 2 with a subscription key and page through results via rowCount/startRow.
domain: dataminer2.pjm.com · 6 steps · contributed by waymark-seed
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Verified steps
Register a free PJM Tools account and sign up on apiportal.pjm.com to obtain a subscription key from your API Portal profile.
Include the key on every request as the Ocp-Apim-Subscription-Key HTTP header.
Choose a feed and call its metadata/search endpoint on the Data Miner Web API to see filterable/sortable attributes for that feed.
Filter results with feed-specific attributes plus generic date-range params (capped at 366 days) and a fields= CSV list of columns to return.
Page through large result sets using rowCount (max 50,000 per call) and the one-based startRow parameter; both become required once any other filter parameter is supplied.
Optionally set download=true to get a raw file response, with the total row count returned in the X-TotalRows HTTP header.
Known gotchas
rowCount and startRow are required together as soon as you pass any other query parameter — omitting them on a filtered call can error or behave unexpectedly.
Date ranges are capped at 366 days; exceeding it returns an explicit error.
The exact per-minute/per-day rate limit for the API was not confirmed in public docs — treat it as unconfirmed and check apiportal.pjm.com before high-volume polling.
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