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Hydro One customer service

Customer service number
1-888-664-9376
Customer support
www.hydroone.com
Corporate office
Hydro One Networks Inc., 483 Bay Street, South Tower, 8th Floor, Toronto, Ontario M5G 2P5, Canada
Twitter / X
@HydroOne

Contact details checked on 21 Oct 2026

Why use our complaint platform?

01

Written in minutes

We help you write an effective complaint in minutes. Our AI cyber hornets are trained on thousands of complaint letters that actually worked.

02

We will make some noise!

Your complaint gets the attention it deserves. Our cyber hornets could post it on social media, send it by printed letter or use other escalation tools at our disposal.

03

Your personal case coach

Our AI models open a case file and keep coaching after you file: what to reply, when to push, and how to escalate if nothing happens.

04

You are not alone

Join 73,608 consumers who refused to be ignored. Our community is there for advice while you chase your resolution.

Is Hydro One legit?

Legit

You can trust that Hydro One is genuine: it owns Ontario's largest network of power lines and supplies much of rural Ontario, though its bills can still come as a shock. The power you actually used is only one part of the total, as delivery and other charges are added on top.

What we checked

  • Listed in Toronto since 2015
  • Head office on Bay Street, Toronto

Watch out for

  • A call threatening to cut your power today unless you pay, which Hydro One says it never does without notice.
  • Setting up power after a move through a lookalike website that asks for card details or a security deposit.
  • Facebook ads promising bill credits or seniors' rebates in Hydro One's name that are not its own offers.

Hydro One bill far higher than you expected?

We help you write it, it gets its own public page, and you can have it sent to Hydro One as a formal letter.

File a Hydro One complaint

Common customer service questions about Hydro One

How do I file a complaint about Hydro One?

Do you have a dispute or a bad customer experience with Hydro One? Report it through our website to maximize the chance of getting it resolved.

We help you write an effective complaint in minutes. Our AI models are trained on thousands of effective complaint letters. Then we push it through emails, social media, paper complaint letters and other tools at our disposal. And you are not alone: our helpful community is there for advice.

How do I contact Hydro One customer service?

The Hydro One customer service number is 1-888-664-9376, for billing, meter readings, moves and other account questions. Hydro One also publishes a complaints email address, shown in the contact details at the top of this page, and the contact page on the Hydro One website lists the other routes, including how to report an outage. Have the account number from your bill ready, and note the date and reference of every call.

Start your complaint here as well, and we push it out to Hydro One by email, social media and printed letters.

Why is my Hydro One bill so high?

A Hydro One bill is usually higher for one of a few reasons: winter heating or summer cooling, a longer billing period, an estimated reading followed by an actual one, a change in electricity prices or in your price plan, or delivery charges, which cover the cost of the lines and can be a large share of the bill for rural customers. Compare the usage and the number of days on the bill with the same bill a year earlier, check whether the reading was actual or estimated, and look at the usage data in your Hydro One online account.

Where the numbers do not add up, ask Hydro One in writing to check the meter and the bill, and ask about a payment arrangement while it is reviewed. We help you write the billing dispute in minutes through our complaint process, drawing on thousands of complaint letters that actually worked.

How do I escalate a complaint with Hydro One?

To escalate a complaint with Hydro One, ask for it to be logged as a formal complaint and write down the reference number, the date and the name of the person you spoke with. Put the key points in writing to the complaints email address in the contact details above, so there is a dated record of what you asked for. If the first answer does not settle it, reply quoting the reference, ask for the complaint to be reviewed by a supervisor, and ask who is now handling it.

Hydro One's corporate head office is in Toronto, and the full address is in the contact details above. Customer mail has its own address on the Hydro One website, so check which one fits before you write, and quote your account number and complaint reference in the letter.

Can I complain to the Ontario Energy Board (OEB) about Hydro One?

Yes. The Ontario Energy Board (OEB) handles complaints and inquiries about the energy companies it oversees in Ontario, Canada, including the utilities that deliver electricity, and that covers Hydro One. The OEB generally expects Hydro One to have had the chance to put things right first, so keep a record of every contact, with the date and the reference you were given.

Open a case with us alongside it: our trained AI keeps coaching you on what to reply and when to push again.

Is that Hydro One disconnection call real?

Not if it demands payment right away to keep your power on. Hydro One says it never demands immediate payment by prepaid card and never disconnects without notice in advance. Fake Hydro One websites with lookalike phone numbers have also asked people moving house for card details or a security deposit, which it does not charge homes.

What do people complain about most at Hydro One?

Nothing has been reported about Hydro One here yet. Our research shows what typically goes wrong at electricity utilities that serve large rural areas: bills far higher than expected, delivery charges that make up much of the total, estimated or missed meter readings, long outages after storms, and delays with moves, new connections and tree trimming near the lines.

Opened a Hydro One bill that does not match your use? Report it first, and your case opens the record for the next rural Ontario household checking the same charges.

What happens after I submit my complaint?

Your complaint gets its own public page on Complain.biz and we get to work: we bring it to the attention of Hydro One through emails, social media, paper complaint letters and other tools at our disposal.

And we stay with it after you file. Our trained AI opens a case file for you and keeps coaching: what to reply, when to push again, and how to escalate if nothing happens.

Can other consumers help me with my Hydro One complaint?

Yes. We have an active community of consumers, and complaints here are public: people who ran into the same problem with Hydro One can give you advice or back you up with their own story. A complaint with a community behind it is much harder to overlook.

Hydro One complaints

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Helpful experiences shared by Hydro One customers. Search, discuss and connect with other people in our community.

Hydro One complaints per month

Dec 2025 - Nov 2026

Complaints filed on Complain.biz about Hydro One in each of the last twelve months.

  • 0 Dec
  • 0 Jan
  • 0 Feb
  • 0 Mar
  • 0 Apr
  • 0 May
  • 0 Jun
  • 0 Jul
  • 0 Aug
  • 0 Sep
  • 0 Oct
  • 0 Nov

No complaints about Hydro One yet. Yours can be the first.

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How Hydro One compares

Hydro One customer service compared to others in the Energy Companies category.

Company Complaints Biggest problem
Duke Energy 70 complaints Bills that jump without warning
AEP Energy 25 complaints Bills that jump or double
CenterPoint Energy 19 complaints Wrong bills and unexpected charges
OG&E 9 complaints
Hydro One (this page) 0 complaints No complaints yet
BC Hydro 0 complaints No complaints yet
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