Markets & Operations

OASIS

The Open Access Same-Time Information System (OASIS) provides information about available transmission capability for point-to-point service and a process for requesting transmission service on a non-discriminatory basis. OASIS enables transmission providers and transmission customers to communicate requests and responses to buy and sell available transmission capacity offered under the Open Access Transmission Tariff.

Production: Sign In | Register for an account: User | System
Train: Sign In | Register for an account: User | System

User Guide | API Guide PDF
3.19.2019 Tech Change Forum - Special Session - OASIS Training & Education
Product Name Changes from OASIS Legacy to Refresh PDF

Command Line Interface - Java 8+ ZIP | Checksums: SHA2 | SHA3

NAESB BPS WEQ 001-13 Standardized Information

NAESB Home Page
Performance Metrics
Business Practices, Waivers & Exemptions
ATC Information

Business Practices, Waivers & Exemptions

Regional Practices: Clean PDF | Redline PDF
Regional Practices & Merchant Business Practices Amendment Process PDF
PJM Waivers and Exemptions
Intra-BA Transaction Submission Method Selection PDF

OASIS Reference

   Date
Open Access Transmission Tariff WEB | PDF  
Credit Overview PDF  
Overview of PJM UDS Fail Procedures PDF  
OASIS Transmission Path Source/Sink Values XLS  4.15.2025
Fixed Weighted-Average Aggregate Definitions  
North American Electric Reliability Corporation Tagging - Priority Codes Job Aid DOC  
PJM Transmission Charges Example PDF
  
Options for Procuring New Firm PTP Transmission Service PDF
  

Designated Network Resources (DNR)*
 
Designated Network Resources (DNR) CSV **
 
DNR Delisting Requests CSV
 

* DNRs listed are physically internal to PJM. External resources may be queried on the PJM OASIS.
** Does not account for delisting requests.

Confirmed OASIS Requests

Process of Sharing or Transferring Unused Allocations PDF

PJM is posting confirmed transmission reservation data in an effort to provide more efficient access to historical reservation data. The monthly posting is posted approximately 6 business days after the last day of the previous month.

Note: All hours in the files below are in Eastern Prevailing Time (EPT) unless otherwise noted.

2025


June CSV
May CSV
April CSV
March CSV
February CSV
January CSV

Previous Requests




Contact PJM
Member Community

(866) 400-8980
(610) 666-8980
Member Relations

First-Time Users

User Guide PDF
System Requirements
Purchasing OASIS During DST PDF
PKI Certificates and Two-Step Verification Browserless/API PDF

Manuals
Manual 2: Transmission Service Request WEB | PDF
  
MISO JOA | Progress JOA PDF
  
Holidays & business calendars can be found in the Billing, Settlements & Credit section.

Forms


Open Access Transmission Tariff – Attachment A (Firm Point-to-Point Transmission Service) WEB & Attachment F (Network Integration Transmission Service) WEB

Pricing
Date
Guide to Billing PDF
7.1.2010
Dispatch Rates
Locational Marginal Prices
Pricing Point Calculator
Transmission Owner Formula Rates

Regional Through & Out Rates
Date
Notification PDF
5.30.2019
Additional Information XLS
3.19.2007

Available Transfer Capability (ATC) References


Algorithms for Available Flowgate Capability (AFC) & ATC Calculations PDF

Planning References


Planning Strawman Required by the Federal Energy Regulatory Commission in Order No. 890 PDF
Queues:
Queues, Retirements & Retools
New Services Queue
New Service Requests
Generation Deactivations