Distributed Energy
Resource Aggregations
Learn how distributed energy resources can work together through an aggregator to participate in ISO-New England wholesale electricity markets, and understand the associated requirements for our customers.
About DER aggregations
Understand DERs, aggregations, and FERC Order No. 2222.
Information for customers
Review benefits, eligibility, technical requirements, and steps.
Information for aggregators
See requirements before submitting enrollments.
Resources and FAQs
Find answers, program links, maps, and terms.
About DER aggregations
Understand distributed energy resources, aggregation, and market participation.
What is a distributed energy resource aggregation?
A distributed energy resource is a distribution-connected resource such as rooftop solar, energy storage, demand response, managed electric vehicle charging, smart thermostats, or thermal energy storage.
Aggregation combines multiple DERs into one group that can participate in the wholesale market through an aggregator.
FERC Order No. 2222 enables Distributed Energy Resources (DERs) to participate in regional wholesale electricity markets, such as those run by ISO-New England. Smaller resources can work together as a single aggregation. Wholesale electricity markets were built mainly for large power plants. FERC Order No. 2222 gives smaller DERs a way to work together through an Aggregator to take part in these markets.
Information for customers
Participation can support grid reliability, make use of existing energy resources, and may provide compensation opportunities.
NOTE: Please work with your aggregator to understand any compensation you may receive and if participation in an aggregation could impact your current rate.
Participation information
To participate, your DER must be connected to an active UI account.
If your DER can send electricity to the grid, such as solar or battery energy storage, you must have received UI Approval to Energize or Operate the facility. A completed executed Interconnection Agreement is required where applicable.
For more information, please visit our Connecticut Renewable Energy Solutions Interconnections webpage.
Rooftop solar, battery energy storage, demand response, managed electric vehicle charging, smart thermostats, and thermal energy storage. Multiple DER types may participate together.
A smart (interval) meter is required for accurate settlement. Metering and telemetry requirements depend on the participation model and ISO-NE criteria. DERs may participate in only one aggregation at a time.
Work with your aggregator to understand the various participation modules and understand which ones you qualify for. Visit ISO-NE for more information. Duplicative compensation for the same service is not allowed.
For additional information for customers who generate Renewable Energy Certificates (RECs), learn more here.
Participation modules:
- Generator Asset (GA)
- Demand Response Resource (DRR)
- Alternative Technology Regulation Resource (ATRR)
- Binary Storage Facility (BSF)
- Continuous Storage Facility (CSF)
- Settlement‑Only Distributed Energy Resource Aggregation (SODERA)
- Demand Response Distributed Energy Resource Aggregation (DRDERA)
For more information on the different participation models, please refer to ISO-NEs FERC Order 2222 Participation Models document.
Compensation pertaining to Renewable Energy Certificates
This is not applicable to all DERs, only those that produce energy and that have been qualified by CT PURA.
Renewable Energy Certificate (REC) ownership is generally transferred to the utility in exchange for tariff compensation. In many Connecticut renewable energy programs, customers receive compensation under a utility tariff in exchange for transferring ownership of the RECs associated with their project's renewable energy production to the Electric Distribution Company. Customers should review the terms of their specific program to understand REC ownership requirements.
To learn more: Connecticut Residential Solar Incentives, Non-Residential Renewable Energy Solutions, LREC / ZREC Program Information and Documents, RFP for NRES Program, RFP for SCEF, or call (800) 722-5584 to speak to a customer care representative.
Customers may retain ownership and market or sell RECs through the New England Power Pool Generation Information System (NEPOOL GIS), subject to applicable program requirements and market rules.
To learn more: NEPOOL GIS
REC ownership and treatment may vary depending on the specific aggregation arrangement, participation model, and applicable program requirements. Customers should review the terms of their participation agreement to determine whether RECs are retained by the customer or transferred to another party.
To learn more: FERC Order No. 2222 Project Information, ISO-NEs FERC Order No. 2222 Key Project webpage
Steps to participate:
1. Review your current rate and DER requirements. You can find your rate on page two of your bill under delivery charges or by calling our customer service team at 800.722.5584. Visit our pricing page for current rate information.
2. Select an aggregator registered with ISO-NE and review the contract terms. To find registered aggregators, please visit ISO-NEs Participant Directory and download the most recent list.
3. The aggregator submits enrollment after applicable UI prerequisites are complete.
Aggregator information
Get the information and requirements needed to participate as an aggregator in our service territory.
Aggregator requirements:
Before enrollment submission complete the following:
- Be licensed with the state as a supplier if serving any retail load.
- Signed Supplier Service Agreement and completed Electronic Data Interchange (EDI) testing if serving any retail load.
- Signed UI’s Affidavit for each aggregation.
- Passed UI’s Corporate Security Risk Assessment.
NOTE: The Risk Assessment must be completed before the Aggregator Asset ID Registration can be approved. To do this email our team at CT_DER_Aggregations@avangrid.com.
Resources and FAQs
Find program information, useful links, and answers to common participation questions.
Contact us
Questions? Email our team at: CT_DER_Aggregations@avangrid.com
More resources
- ATRR: Alternative Technology Regulation Resource
- DER: Distributed Energy Resource
- DR: Demand Response
- DRR: Demand Response Resource
- HU: Host Utility
- ISO-NE: Independent System Operator New England
- NDA: Non-Disclosure Agreement
- NRES: Non-Residential Renewable Energy Solutions
- PV: Photovoltaic Cells
- RRES: Residential Renewable Energy Solutions
- SCEF: Shared Clean Energy Facility
Frequently asked questions
Review ISO New England's Order No. 2222 project information and work with an aggregator registered with ISO New England.
There is no minimum size for an individual DER. An aggregation must be at least 100 kW AC. Injecting aggregations (that is, those that store or generate power for export to the grid) cannot exceed 5 MW AC.
No. You cannot receive compensation from more than one program for the same service.
Yes. All DERs need a smart (interval) meter, but other requirements may depend on how your DER participates in an aggregation. We will review your meter during enrollment and let you know if changes may be needed. See ISO-NE’s OP-18 for details.
No. All DERs in an aggregation must be located within the same DRR Aggregation Zone.