Green building tools for energy management and sustainability

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Discover how submetering solutions can help manage rising hydro rates.

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A greener, smarter building.

Discover how submetering creates a healthy building and a healthy bottom line.

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Creating a future for generations to come.

Learn how to bring sustainability into the classroom.

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An energy management program
that helps you see the BIG picture.

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Engage students and teachers in energy conservation with in-school energy displays

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Some of Our Customers

With over 200,000 meters installed across Canada, Carma is a factory direct designer and manufacturer of submetering systems for condominiums and rental apartments. All Carma submetering systems are Measurement Canada approved for revenue legal tenant billing.


Thousands of schools across Canada count on Carma for submetering to help reduce energy costs and enage students and teachers in energy conservation. Carma can submeter for electricity, gas and water, as well as main subservices.

Commercial & Industrial

Carma can assist commercial and industrial owners and managers in integrating a submetering system to achieve greater energy efficiency. Whether it's reducing your environmental footprint or reaching LEED standards, Carma has the tools to help you realize a greener building.

Engineers & Contractors

Carma's experience and expertise in submetering gives building engineers and contractors the knowledge they need to design and construct buildings with greater energy efficiency. Carma can provide metering systems for any size project with flexible, customized solutions.