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MonitoringVermont AG filing · September 4, 2026

Green Mountain Power Reports Data Incident to Vermont Regulators

Green Mountain Power filed a report with the Vermont Attorney General on September 4, 2026, regarding a data security incident. The unspecified breach led to the exposure of various customer data types, including personal identifiers and financial information. Affected individuals may face risks such as identity theft and financial fraud.

State
Vermont
Reported
September 4, 2026

What may have been exposed

  • Full Name
  • Social Security Number
  • Date of Birth
  • Mailing Address
  • Financial Account Number
  • Routing Number
  • Energy Consumption and Usage History
  • Email Address

Green Mountain Power, a utility provider in Vermont, has reported a data security incident to the Vermont Attorney General's office. This filing, dated September 4, 2026, indicates an unspecified breach impacting customer data. The company has stated that an investigation into the incident is ongoing.

According to the official report, the exposed data types include Full Name, Social Security Number, Date of Birth, Mailing Address, Financial Account Number, Routing Number, Energy Consumption and Usage History, and Email Address. This combination of personal and financial details carries significant risks for those affected.

The compromise of identifiers such as Full Name, Social Security Number, and Date of Birth can facilitate identity theft, potentially allowing unauthorized individuals to open new accounts or misuse personal information. Exposure of Financial Account Numbers and Routing Numbers could lead to fraudulent financial transactions. Additionally, Email Addresses might be used for targeted phishing attempts, and Energy Consumption and Usage History could potentially inform social engineering scams.

Individuals who receive a data breach notification from Green Mountain Power should take proactive steps to protect themselves. It is advisable to closely review bank and credit card statements for any unusual activity and to monitor credit reports for unauthorized accounts. Placing a fraud alert or security freeze on your credit files with major credit bureaus can add an extra layer of protection.

Remain cautious of unsolicited communications, especially those asking for personal or financial details. Always verify the authenticity of any request for sensitive information directly with Green Mountain Power through official channels. Reviewing personal account statements and being vigilant about online security practices are general recommendations for safeguarding your information.

What to do if you were affected

Based on the categories of information reported in this filing, these steps can help limit the risk of identity theft and fraud.

  • Freeze your credit

    Place a free credit freeze with Equifax, Experian, and TransUnion. A freeze blocks new accounts from being opened in your name and can be lifted anytime.

  • Watch your financial accounts

    Review bank and card statements for unfamiliar activity and turn on transaction alerts. Report anything you don't recognize to your bank right away.

  • Secure your online accounts

    Change the password on any account that reused an exposed password and turn on two-factor authentication wherever it's offered.

  • Stay alert to targeted scams

    Be cautious of calls, texts, or emails that reference this breach. Legitimate organizations won't ask you to confirm sensitive details through an unsolicited message.

  • Keep your notification letter

    Save the notice you received. It documents that your information was involved and is often needed to enroll in any credit monitoring offered or to join a related legal claim.

What to know about the Green Mountain Power data breach

How many people were affected by the Green Mountain Power data breach, and what was exposed?
The filing does not give a count of affected people and lists the following information as involved: Full Name, Social Security Number, Date of Birth, Mailing Address, Financial Account Number, Routing Number, Energy Consumption and Usage History, Email Address. Your own letter is the best guide to what was exposed about you, since notices are usually tailored to each person.
Where can I see the official Green Mountain Power breach notice?
Green Mountain Power's report is published by the Vermont Attorney General: https://ago.vermont.gov/categories/security-breach-notices#green-mountain-power-2026-09-04 Compare it with the letter you received to confirm the dates and details match.
What should I do after getting the Green Mountain Power data breach notice?
Keep the letter and the envelope, and note the date it arrived. Freeze your credit with Equifax, Experian and TransUnion, change any passwords the notice mentions, and sign up for any free credit monitoring the letter offers. Then check whether you may have a claim.
Is the Green Mountain Power data breach letter legit or a scam?
A notice from Green Mountain Power in the mail matches the breach Green Mountain Power reported to the Vermont Attorney General on September 4, 2026. Check that the company name and dates in your letter match that filing. A real notice of data security incident won't ask for your password, Social Security number or a payment — if it does, contact Green Mountain Power through a phone number or website you find yourself.
Did Green Mountain Power offer free credit monitoring?
Check your letter from Green Mountain Power. If free credit or identity monitoring is offered, the enrollment code and deadline are printed in the notice itself. Because Social Security numbers are listed in this filing, identity monitoring and a credit freeze matter more than usual. Signing up doesn't waive any legal rights you may have.
Can I sue Green Mountain Power over the data breach?
It depends on what was exposed, the law in Vermont and your own state, and whether you've been harmed. Most people take part through a class action rather than suing alone. Keep your notification letter — it's the proof that connects you to the breach.
Is there a Green Mountain Power data breach class action lawsuit?
Law firms often open an investigation after a breach notice like this one, and a class action lawsuit may follow. This page doesn't confirm that a lawsuit has been filed against Green Mountain Power. You usually don't have to join a class action to be included — if a settlement is reached, class members are notified and can file a claim.
How much could a Green Mountain Power data breach settlement or claim be worth?
There is no set amount, and no Green Mountain Power settlement is confirmed here. In past data breach settlements, payments depended on what data was exposed and on documented losses — fraud, out-of-pocket costs and time spent dealing with the breach. The filing lists Full Name, Social Security Number, Date of Birth as involved. Keep receipts and records; they're what damages claims are built on.
Do I need a Green Mountain Power data breach lawyer or attorney?
An attorney can read your notice and tell you whether a claim makes sense. A case review here is free, and data breach cases are usually handled on contingency, so there is no upfront cost.

Source: Vermont Attorney General filing

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