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Distribution connections

Commercial and industrial customers

As Ontario’s electricity demand continues to grow, we’re dedicated to connecting you to safe and dependable energy. With new industries and expanding infrastructure, your business plays a vital role as we strengthen local communities and ensure a reliable energy future for all.

Two employees in a warehouse

We're here to help

Our Commercial & Industrial Customer Relations (CICR) team is here to help your business every step of the way. Whether you’re seeking guidance on billing, operations, rebate opportunities, or have questions about our services, we’ll provide you with expert assistance.

CICR@HydroOne.com 1-866-922-2466 Available Monday to Friday: 8:30 a.m. – 4:00 p.m.

Billing support

Detailed breakdowns of rates, usage and load history
Forecasts for new equipment or upgrades
Guidance on rebates, regulatory changes and conservation programs

Operations assistance

Coordinate new connections and upgrades
Assist with power-quality issues
Support planning for reliability and capacity changes

Account resources

Walkthrough of myAccount tools
Access to Hydro One’s Interval Data Portal
Custom reporting and usage insights

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Your bill, explained

Use our interactive bill example to better understand the components of your bill and how each is calculated. Plus, learn more about your business’ rate classification, interval metering, how to determine load factor and more.

View bill example Electricity measurement and rate classification

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Cost of power estimate

If you're considering a new or upgraded service ≥ 50 kW, complete our online form and we'll estimate your monthly electricity costs.

Start request

Technicians working on industrial equipment

The Centralized Capacity Information Map (CCIM)

In addition to our existing Generation Capacity Map, for Hydro One customers, the Ontario Energy Board’s (OEB) CCIM is a new high-level screening tool of the available capacity for both load and generation facilities across Ontario’s electricity distribution system.

Visit OEB's site

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Electric vehicle charging station connections

Request an assessment and see if your business is eligible to install electric vehicle (EV) charging stations.

Learn more

Technicians working on industrial equipment

Getting connected

See what steps are involved when connecting distribution customers.

Learn more

Take control with myAccount

Easily pay bills online and access the Interval Data Portal to view hourly energy usage and download detailed reports.

Billing and payment options

Explore our convenient payment options including AutoPay and eBilling.

The Electric Vehicle Charging Rate

Businesses with eligible electric vehicle (EV) charging stations pay only 17% of the standard RTSR charges.

Save on Energy programs

Your business may qualify for Save on Energy program incentives when making energy‑efficient upgrades.

The Ontario Electricity Rebate

See if you qualify to receive a reduction on the amount of your bill before HST.

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The Industrial Conservation Initiative

Designed to help large energy users manage Global Adjustment costs by reducing demand during peak hours.

Learn more

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Energy reporting and benchmarking

Owners of commercial, industrial and multi-residential buildings with 50,000 square feet or more must report annual energy usage.

Learn more

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The Flexibility Initiative

We’re partnering with eligible large business customers to build a smarter, more affordable grid.

Join the initiative

A utility worker using a handheld device near meters

Meter reading schedules

Access the 2026 billing schedule based on your account’s bill group.

Start request

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Sign up for outage alerts

Get alerts, reminders and updates for both unexpected and upcoming planned outages, sent directly to your phone or email.

Sign up now

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Additional resources available

Check out various business customer links and forms that support your unique needs.

View all forms See business resources