Contact Distributed Generation
Connecting with Distributed Generation Resources
If you need to contact us regarding interconnection inquires, questions or concerns, please email or call us at the numbers listed below.
General Customer Service Inquiries 
 Mon.-Fri., 7:00 a.m. to 7:00 p.m.
800 7 CALL UI (800.722.5584)
 Fax: 203.499.5973
Customer Inquiries - Interconnection
Please refer to the online interconnection portal for updated project milestone statuses. If you have further questions, please send them to generator.connection@uinet.com.
Customer Inquiries - Residential Renewable Energy Solutions
Email: res.renewableenergysolutions@uinet.com
Customer Inquiries - Non-Residential Renewable Energy Solutions
Email: NRES@uinet.com
Mailing Address:
 United Illuminating Company
 Distributed Energy Resources Dept. Mail Stop: OP-3C
 180 Marsh Hill Rd
 Orange, CT 06477
Contractor Service Request
 To establish an electric service for generator connections, contact  UI’s Customer Care  or submit the online work order request form.