The Connecticut Valley Electric Exchange (CONVEX) operates the electric transmission system in Connecticut and western Massachusetts, serving more than 1.7 million people. CONVEX provides safe and reliable electricity to help boost the economy and quality of life for this thriving region's residential and business customers.

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* Please note that all data is preliminary and is subject to change.

New England Load Graph

Connecticut Load Graph

CONVEX Load Graph


  • Conservation Day
    Public appeal to customers to conserve electricity in anticipation of heavy electrical demand and unhealthy air quality conditions, usually due to humid weather.
  • Load Shedding
    An almost instantaneous cutting of power to customers because demand for electricity has outstripped supply.
  • Power Warning
    Public appeals when an immediate reduction in power usage is necessary to avert overload of the electrical system. Public appeals are made when other efforts (e.g. emergency purchases, voluntary curtailment, contracted curtailment and voltage reduction) have been unsuccessful in bringing supply and demand back into balance.

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  • Q: How does one qualify to be on the CONVEX Authorized Personnel List?

    Part 1 – A person shall be trained and knowledgeable of all physical and safety requirements necessary to perform switching and tagging related to transmission, distribution and generating plant equipment where applicable. This training is the responsibility of the operating company and/or local dispatching authority/owner of the equipment.

    Part 2 – After the person is trained and knowledgeable in the physical and safety aspects of switching and tagging, that person shall qualify to be on the CONVEX APL only after attending and successfully completing an initial training session, on Eversource TD-800 - Switching and Tagging, presented by a member of the CONVEX staff.

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