ICAP Calculation
ICAP Calculation for Load Serving Entities (LSE's):
The Installed Capacity (ICAP) for each Load Serving Entity (LSE) is calculated by the NYISO from information provided by National Grid. The reported ICAP is based on the aggregate of each LSE's customers' contribution to the NYISO peak load during the preceding year. The individual customers' contributions (tags) are estimated annually. The daily LSE requirements are then calculated by tracking customer enrollment changes and shifting load accordingly. Customers' contributions to ICAP are estimated from either their actual peak hour use if the customer is billed from interval data, or load profiles if they are billed on a load shape.
View details of National Grids methodology for calculating each customer's contribution to ICAP (pdf) for power year beginning 5/1/11.
National Grid provides ICAP values for individual accounts upon request. An approved ESCO can obtain ICAP values for prospective customers and existing customers by sending an e-mail to the Retail Choice mailbox at
. Please include the account numbers for which you are requesting to receive the ICAP values. If you are requesting more than 25 accounts, please provide an attachment in the email in either excel or text format containing all the account numbers for which you are requesting ICAP values.
The NYISO Peak hour for 2010 occurred on July 6, 2010 at the hour ending at 5:00 pm. More detail on ICAP requirements can be found by visiting the New York State ISO website*.
To view load profiles (including EDI Load profile codes) used for ISO true-up for fifteen service classifications, please visit Load Profiles.
* Please note that by using this link, you will be leaving our website. Please review our Privacy Policy for more information.
The Installed Capacity (ICAP) for each Load Serving Entity (LSE) is calculated by the NYISO from information provided by National Grid. The reported ICAP is based on the aggregate of each LSE's customers' contribution to the NYISO peak load during the preceding year. The individual customers' contributions (tags) are estimated annually. The daily LSE requirements are then calculated by tracking customer enrollment changes and shifting load accordingly. Customers' contributions to ICAP are estimated from either their actual peak hour use if the customer is billed from interval data, or load profiles if they are billed on a load shape.
View details of National Grids methodology for calculating each customer's contribution to ICAP (pdf) for power year beginning 5/1/11.
National Grid provides ICAP values for individual accounts upon request. An approved ESCO can obtain ICAP values for prospective customers and existing customers by sending an e-mail to the Retail Choice mailbox at
. Please include the account numbers for which you are requesting to receive the ICAP values. If you are requesting more than 25 accounts, please provide an attachment in the email in either excel or text format containing all the account numbers for which you are requesting ICAP values.
The NYISO Peak hour for 2010 occurred on July 6, 2010 at the hour ending at 5:00 pm. More detail on ICAP requirements can be found by visiting the New York State ISO website*.
To view load profiles (including EDI Load profile codes) used for ISO true-up for fifteen service classifications, please visit Load Profiles.
Links noted by "(pdf)" are in PDF format and support Adobe Acrobat 5.0 and later. Download Adobe Reader, free software to view and print PDF files.
* Please note that by using this link, you will be leaving our website. Please review our Privacy Policy for more information.
