PJM Interconnection

PJM OASIS Template API

PJM's Open Access Same-Time Information System (OASIS) node, the FERC Order 889 obligation implemented against the NAESB Wholesale Electric Quadrant business practice standards. PJM states support for NAESB WEQ-002 (Standards and Communication Protocol) and WEQ-003 (Data Dictionary) versions 2.0, 2.1, 2.2 and 3.3, accepting query/response and input/response templates over HTTP GET (Content-type text/plain) and POST (application/x-www-form-urlencoded) against the template base URL, plus three PJM custom templates (pjmannulment, pjmtransreq, pjmtsrcomment). The NAESB WEQ-002-4.5.2 public information page at https://pjmoasis.pjm.com/OASIS/PJM/INFO.HTM is served anonymously (verified HTTP 200 on 2026-07-27); template submission itself requires a PJM SSO session token or the PJM Command Line Interface tool.

Documentation GitHub

Documentation

📖

Documentation

https://www.pjm.com/markets-and-operations/etools/oasis.aspx

Other Resources

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Guide

https://www.pjm.com/-/media/DotCom/etools/oasis/pjm-oasis-api-user-guide.pdf

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PublicInformation

https://pjmoasis.pjm.com/OASIS/PJM/INFO.HTM

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Sandbox

https://oasistrain.pjm.com/

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CLI

https://www.pjm.com/-/media/DotCom/etools/pjm-command-line-interface-java-11.zip

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Standard

https://www.naesb.org/weq/default.asp

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Conformance

https://raw.githubusercontent.com/api-evangelist/pjm/refs/heads/main/conformance/pjm-conformance.yml

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API entry from apis.yml

aid: pjm:pjm-oasis-template-api
name: PJM OASIS Template API
description: PJM's Open Access Same-Time Information System (OASIS) node, the FERC Order 889 obligation
  implemented against the NAESB Wholesale Electric Quadrant business practice standards. PJM states support
  for NAESB WEQ-002 (Standards and Communication Protocol) and WEQ-003 (Data Dictionary) versions 2.0,
  2.1, 2.2 and 3.3, accepting query/response and input/response templates over HTTP GET (Content-type
  text/plain) and POST (application/x-www-form-urlencoded) against the template base URL, plus three PJM
  custom templates (pjmannulment, pjmtransreq, pjmtsrcomment). The NAESB WEQ-002-4.5.2 public information
  page at https://pjmoasis.pjm.com/OASIS/PJM/INFO.HTM is served anonymously (verified HTTP 200 on 2026-07-27);
  template submission itself requires a PJM SSO session token or the PJM Command Line Interface tool.
humanURL: https://www.pjm.com/markets-and-operations/etools/oasis.aspx
baseURL: https://pjmoasis.pjm.com/OASIS/PJM/data/
image: https://www.pjm.com/assets/MVC/responsive/img/pjm-logo.png
tags:
- OASIS
- Transmission
- NAESB
- FERC Order 889
- Available Transfer Capability
properties:
- type: Documentation
  url: https://www.pjm.com/markets-and-operations/etools/oasis.aspx
- type: Guide
  url: https://www.pjm.com/-/media/DotCom/etools/oasis/pjm-oasis-api-user-guide.pdf
- type: PublicInformation
  url: https://pjmoasis.pjm.com/OASIS/PJM/INFO.HTM
- type: Sandbox
  url: https://oasistrain.pjm.com/
- type: CLI
  url: https://www.pjm.com/-/media/DotCom/etools/pjm-command-line-interface-java-11.zip
- type: Standard
  url: https://www.naesb.org/weq/default.asp
- type: Conformance
  url: conformance/pjm-conformance.yml