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EPA Portfolio Manager - Long Island NY

National Grid supports the EPA’s Portfolio Manager tool for Long Island NY properties as part of a larger effort to promote energy efficiency and identify improvement opportunities for our customers. Portfolio Manager provides benchmarks to help customers assess the energy performance of their building(s), and encourage action to make the building(s) more efficient in a sustainable way. To accomplish this, National Grid must disclose the aggregated energy consumption data for your premises.

Please follow the steps below:

Step 1: Start the aggregate data upload process, you must visit the EPA Portfolio Manager site to register your property and complete the SHARE PROPERTY procedure. (If you haven't done so already.)
Step 2: Once you have completed the property share procedure with the EPA portfolio manager, select EPA Portfolio Manager Online Form link to complete the online register process with National Grid.

We have enhanced our system by providing customers the option to obtain two (2) additional years of aggregated whole-building usage data, after the initial data upload is completed.

If you have already completed the initial data load process using the steps and link outlined above, fill out the Additional historical usage data upload online form to receive two(2) additional years of prior aggregate usage information.

This additional data will take up to 7 business days to get uploaded into your portfolio manager account.

User Guide

For more information on how to upload whole building aggregate data to Portfolio Manager.

User Guide

Benchmarking Portal FAQ


Portfolio Manager

You can share and request data with Portfolio Manager.


Quarterly Aggregate Data Upload Process

National Grid has implemented a quarterly aggregate data upload process that will continue to provide customers with quarterly building usage information for up to four (4) years, as long as building owners maintain their EPA Portfolio Manager web share link as active. Deactivating EPA portfolio manager property share link will disable the upload process.


More Information

If you have any questions about the submission process, email National Grid at or call (855) 563-7448, 8:00 am to 5:00 pm EST Monday through Friday.


*The Energy Usage Release Form gives National Grid permission to disclose aggregate energy data to EPA Portfolio Manager.