Advanced Technology International Incorporated is based in the most developed commercial and industrial city in Canada–Toronto. As early as many years ago, the core members of the company started caring and studying the promotion and application of solar water heaters in Canada.

Viva Solar Inc. is a manufacturer of monocrystal Silicon photovoltaic solar cells, modules and systems.

SolarSense.com, a division of ARISE Technologies, features a complete line of portable solar products including NOMAD series complete portable solar energy systems, plus resources & info on the benefits of solar power.

Goldwater Solar Services (GSS) was founded in 2005 by Aaron & Neill Goldwater. GSS is a provider of cost-effective, environmentally friendly, and reliable alternatives to traditional ways of heating water for residential, commercial, industrial, and institutional customers. GSS acts as a Solar Energy Supply Company (SESCO) whereby GSS finances the installation of solar hot water heating systems. We provide any and all maintenance at no charge, and only bill our customers for the energy savings that the system provides. Our customers save money and contribute to a healthy environment.

Pro Watts is a multi-faceted international company dedicated to design of substation automation, data acquisition, electrical design and manufacturing, and distribution of solar panels, wind turbines, battery, and complete renewable energy generation systems and backup power. Majority of our products are custom designed to user specification.

We finance the installation of new renewable energy systems, particularly solar heating, in commercial buildings, industrial plants, apartment buildings etc.

Windsong Renewable Energy Systems provides power systems for your home, cottage, or workplace. Specializing in solar panels and wind turbines, we can assess your energy needs and provide the system that's best for you.

We are an enterprise stepping into a marketplace for established and emergent solar technologies.

Our solar electric systems allow you to become your own miniature electrical utility. These products of advanced technology collect the Sun's energy and convert it into the same electricity as supplied by your local electrical utility. When your home or business is equipped with one of our systems, you will be slowing down your electricity meter, or even turning it backwards,* when your personal 'solar utility' is producing more electricity than you are using. Our systems come in many sizes, from small residential to large industrial. Solera Substainable Energies Company is Canada's leader in grid-connected solar electric power.

PowerWISE TM is the partnership between the Ontario Government and the six participating local electricity utilities that comprise the Coalition of Local Distributors (CLD).PowerWISE represents conservation, education and programs geared toward the residential and small commercial customers within defined areas in Ontario.

Mobile and backup power solutions for everyday use and for emergency power during blackouts

The Ontario Sustainable Energy Association (OSEA) is an umbrella organization formed to implement community sustainable energy projects across Ontario. OSEA was established in May 1999, with a mission to "facilitate the transition to a sustainable energy economy in Ontario through the development and support of community-based sustainable energy initiatives."