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This year we're upping the challenge!

The Earth Hour Weekend Challenge engages properties to reduce energy waste over a full weekend and recognizes the greatest reduction at BOMA Toronto’s annual Celebration of Excellence Gala.


Participating in the Earth Hour Weekend Challenge is free and open to any building in Ontario (excluding 613 Area Code).


  1. Register for the Earth Hour Challenge Weekend (Free)

  2. Look for operational savings and collaborate with tenants to eliminate unnecessary energy use

  3. Submit your submeter energy use for the three consecutive weekends leading up to, and including the Challenge Weekend.


Through collaborative efforts, our hope is that landlords will continue to partner with tenants to collectively realize energy-saving strategies that in turn drive down operational costs and greenhouse gas emissions.


Registration is free and simple.

participant resources

Check out our various tools and resources available to participants of this year's Beyond Earth Hour Challenge.

education tools

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info webinar

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Missed the session? Learn tips & tricks and best practices from our info webinar. Click below to watch the information webinar.

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contest rules


Read our full Challenge rules.

Wondering how to participate in this year's Earth Hour Weekend Challenge? Click below

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Check out the Toolkit

Whether you're a tenant or a property manager looking to engage tenants, learn more about the challenge 

print and social posters

Click to download our 2023 Earth Hour Weekend Challenge print and social poster resources. If you're a PosterOne customer, you can request these items for print. Contact: to order.


NOTE: Existing race2reduce participants should already have access to these posters in their PosterOne account.

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other resources

Check out other Earth Hour resources and toolkits made available through other affiliated organizations.

Energy@Works Inc-Energy Savings Tips & Tricks Video

WWF-Energy Efficiency Tips

connect2earth Toolkits

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Have questions about this year's challenge?

Connect Lisa Liang:

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