Hydro One Limited head office mailing address
To mail a letter to Hydro One Limited, an electricity utility, send it to the company's head office at Hydro One Limited, North Tower, 483 Bay Street, Toronto, ON M5G 2P5. This is Hydro One Limited's publicly listed corporate head office — the right address for written correspondence, feedback, and formal notices. Add your return address if you'd like a reply, and confirm the address on the company's official contact page before anything time-sensitive.
$6 flat — postage included · no account needed
Mailing address
Verified August 2026Hydro One Limited — head office
Hydro One Limited North Tower 483 Bay Street Toronto ON M5G 2P5
Written correspondence, customer feedback, and formal notices to the company. This is the corporate head office — not a store, branch, or service centre.
No printer, envelope, or stamp — we print and mail it the next business day.
Sources
Addresses verified August 2026 against official sources. Always confirm on the official site before time-sensitive filings.
Key facts
- This is Hydro One Limited's corporate head office address, taken from the company's own contact page.
- Hydro One Limited is an electricity utility.
- Use it for letters, feedback, and formal written notices — not for parcels or in-store returns.
- Head offices relay mail internally; an attention line (e.g. "Customer Relations") helps it land in the right place.
- Include your return address and any reference number so the company can respond.
- PostPal prints your letter and mails it for you — no printer, envelope, stamps, or post office trip.
How to send your letter
- 1
Decide who your letter is for
A letter to the head office reaches the company generally. If it's for a particular team, add an attention line such as "Attention: Customer Relations" or "Office of the President" so it's routed faster.
- 2
Write your letter
Keep it clear and factual. Include any account, order, or reference number, the outcome you're looking for, and your return address so the company can write back.
- 3
Address it to the head office
First line: Hydro One Limited. Next: North Tower. Then the street: 483 Bay Street. Then the city line: Toronto ON M5G 2P5.
- 4
Send it with PostPal
Write or upload your letter to PostPal with the address above prefilled. We print it, add your return address, and mail it for you — no printer, envelope, stamps, or trip to the post office.
Common questions
What does Hydro One Limited do?
Hydro One Limited is an electricity utility. The address above is its corporate head office — the right place for written correspondence, customer feedback, and formal notices.
What is Hydro One Limited's head office mailing address?
Hydro One Limited, North Tower, 483 Bay Street, Toronto, ON M5G 2P5. It's the company's publicly listed corporate head office — the right address for written correspondence, feedback, and formal notices. Confirm it on Hydro One Limited's official contact page before anything time-sensitive.
Will someone actually read my letter or write back?
Head offices route incoming mail to the relevant team, so a letter to the corporate address does get handled — but a personal reply isn't guaranteed. Including your return address, an account or reference number, and a clear request gives you the best chance of a response.
Is this a store or branch address?
No — this is Hydro One Limited's corporate head office. For something tied to a specific location, contact that store or branch directly; use the head office for company-wide correspondence and formal notices.
Can I mail documents or a formal notice here?
Yes — you can send letters and printed documents to the head office. If you're formally serving legal documents, a company may designate a separate registered or legal address, so check its official filings first.
How do I mail Hydro One Limited a letter without a printer?
Write or upload your letter to PostPal with the address prefilled. We print it, add your return address, and mail it for you — no printer, stamps, or post office trip needed.