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


  • 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.
  • Load Shedding
    An almost instantaneous cutting of power to customers because demand for electricity has outstripped supply.
  • Power Interruption Alert
    When possible, the public would be alerted that load shedding or rolling blackouts are imminent.

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  • Q: What effect does a voltage reduction have on my service?

    Generally, a voltage reduction would have no noticeable effect on your service. Standard household appliances and electrical equipment are designed to tolerate a ten per cent change in voltage. Utilities regularly perform five percent voltage reduction tests with little notice to customers. 

    Customers concerned about their electric service or sensitive electronic equipment should check their equipment manuals or with their equipment suppliers about precautionary measures to protect equipment or data. Computer users should save files and data frequently. 


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