Markets & Operations

THEO, PLC & NSPL Methodology Inventory

Total Hourly Energy Obligation (THEO), Peak Load Contribution (PLC) and Network Service Peak Load (NSPL) parameters are calculated values used for a variety of purposes by PJM. These values are calculated by the electric distribution companies within PJM’s territory. Provided below is an inventory of the procedures for calculation of THEO, PLC and NSPL for each of the electric distribution companies. The THEO, PLC and NSPL methodology inventory processPDF identifies the process for updating the inventory as well as the locations on the PJM website where the inventory may be found.


Utility Methodology Additional Information Last Revised Date
Allegheny Power Systems (Including the EDCs of West Pennsylvania Power, Monongahela Power and Potomac Edison) PJM Open Access Transmission Tariff (OATT) Attachments:
M-1PDF
M-2PDF
First Energy Zones Attachments:
M-1 - Procedures for Determining a Load Serving Entity’s Hourly Energy Obligations
M-2 - Procedures for Determining a Load Serving Entity’s Peak Load Contribution and Network Service Peak Load
9.27.2013
Allegheny Electric Cooperative, Inc. Not applicable
 
American Electric Power Company, Inc. (AEP) Company website The web page includes AEP’s process descriptions for transmission, capacity, hourly energy and unaccounted for energy calculations.
February 2015
American Transmission Systems, Inc. (ATSI)   (Including the EDCs of Ohio Edison, Pennsylvania Power, Toledo Edison and Cleveland Electric Illuminating) PJM OATT Attachments:
M-1PDF
M-2PDF
First Energy Zones Attachments:
M-1 - Procedures for Determining a Load Serving Entity’s Hourly Energy Obligations
M-2 - Procedures for Determining a Load Serving Entity’s Peak Load Contribution and Network Service Peak Load
9.27.2013
Atlantic City Electric Company PJM OATT Attachment:
M-2PDF
Attachment:
M-2 - Procedures for Determination of Peak Load Contributions and Hourly Load Obligations for Retail Customers
7.14.2011
Baltimore Gas and Electric Company (BGE) PJM OATT Attachment:
M-2PDF
Attachment:
M-2 - Methodologies used to determine Capacity Peak Load Contributions, Network Service Peak Load Contributions, Daily Peak Load Obligation, Daily Network Service Peak Load Obligation, and Hourly Load Obligations 
9.1.2014
Commonwealth Edison (ComEd) PJM OATT Attachment:
M-2PDF
Attachment:
M-2 - Methodologies used to determine Capacity Peak Load Contributions, Network Service Peak Load Contributions, Daily Peak Load Obligation, Daily Network Service Peak Load Obligation, and Hourly Load Obligations
1.4.2016
Dayton Power and Light Company Company website Available upon request
9.3.2014
Delmarva Power and Light Company PJM OATT, Attachments:
M-2PDF
M-2PDF
Attachment:
M-2 - Procedures for Determination of Peak Load Contributions and Hourly Load Obligations for Retail Customers
7.14.2011
Dominion Virginia Power Company website

The Capacity Peak Load Contribution and Network Service Peak Load Manual and Hourly Energy Obligation Manual are located under Operational Information within the Supplier Information Center.

9.3.2014
Duke Energy Ohio and Kentucky Available upon request Duke provides this information in written format (not formulaic) upon request.
 
Duquesne Light Company PA State Tariff See sections 5.1.3, 7, and 8.
9.3.2014
East Kentucky Power Cooperative (EKPC)   EKPC is regulated by the Kentucky Public Service Commission.  An explanation of our methodology will be provided to current or potential customers upon request.
 
Jersey Central Power and Light Company (JCP&L) (Including the EDC of Jersey Central Power and Light) PJM OATT Attachments:
M-1PDF
M-2PDF

First Energy Zones Attachments:
M-1 - Procedures for Determining a Load Serving Entity’s Hourly Energy Obligations
M-2 - Procedures for Determining a Load Serving Entity’s Peak Load Contribution and Network Service Peak Load

9.27.2013
Metropolitan Edison (Met-Ed) (Including the EDC of Metropolitan Edison) PJM OATT Attachments:
M-1PDF
M-2PDF
First Energy Zones Attachments:
M-1 - Procedures for Determining a Load Serving Entity’s Hourly Energy Obligations
M-2 - Procedures for Determining a Load Serving Entity’s Peak Load Contribution and Network Service Peak Load
9.27.2013
Old Dominion Electric Cooperative (ODEC) PJM OATT Attachments:
M-2PDF
M-2PDF
ODEC’s annual transmission revenue requirement is included in the annual transmission revenue requirement and rate for Network Integration Transmission Service for the Delmarva Zone.

Delmarva Power and Light Company Attachment:
M-2 - Procedures for Determination of Peak Load Contributions and Hourly Load Obligations for Retail Customers
7.14.2011
PPL Electric Utilities Corporation Company website
  • PPL Electric's zone peak load dates for the calculation of the 2011, 2012, 2013 and 2014 PLC calculations
  • 2012, 2013 and 2014 capacity peak load calculators
  • 2013 PLC default values and loss factors
  • PLC development and application time table
  • A narrative of how PPL Electric calculates customer PLCs
9.3.2014
PECO Energy PJM OATT Attachment:
M-2PDF
Attachment:
M-2 - Process by which PECO determines Capacity Peak Load Contributions, or “PLCs”, Network Service Peak Loads, or “NSPLs”, and Final Hourly Load Obligations
 
9.1.2014
Pennsylvania Electric Company (Penelec) (Including the EDC of Pennsylvania Electric Company) PJM OATT Attachments:
M-1PDF
M-2PDF
First Energy Zones Attachments:
M-1 - Procedures for Determining a Load Serving Entity’s Hourly Energy Obligations
M-2 - Procedures for Determining a Load Serving Entity’s Peak Load Contribution and Network Service Peak Load
9.27.2013
Potomac Electric Power Company

State Tariffs:
Maryland
D.C.

Company website

See Article 9 of the Maryland and District of Columbia Electric Supplier Coordination Tariffs.  Further details can be found within the Supplier Operating Manual (Procedures for Determining Peak Load Contribution for Capacity and Transmission Service and Hourly Energy Obligations) posted on the company website.

9.3.2014
Public Service Gas and Electric Company (PSE&G) PJM OATT, Attachment:
M-2PDF

Attachment:
M-2 - Procedures for Determination of Peak Load Contributions and Hourly Load Obligations for Retail Customers

6.21.2017
UGI Utilities, Inc.

State Tariff

The rules are found at 6.1, 6.2, 7.1 - 7.4, 8.1 - 8.4.
9.3.2014

Company website secure page

UGI maintains a secure portion on their website that may be accessed by EGSs via a UGI provided user name and passcode. The website provides information about the UGI customer classification systems; in particular, the load research strata assignments used in allocating PLCs/NSPLs and the hourly load profiles by strata used in scheduling/reconciling EGS choice load. A narrative on UGIs methodology for assigning PLC/NSPL values to each customer is also located on this secure website.
9.3.2014

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