The Ontario Sustainable Energy Association (OSEA) is a province-wide, member-based, non-profit organization representing more than 1500 individuals including private citizens, cooperatives, farmers, First Nations, businesses, institutions and municipalities. OSEA members are engaged in or supporting community power projects and renewable energy.

OSEA's mission is to serve the community power sector including households, farms, First Nations, co-operatives and collaborative businesses, local distribution companies, municipalities, other institutions and non-community power partners through: advocacy, public outreach and capacity building.

Every Ontarian is a conserver and generator of sustainable energy either through a household or through a local community owned business, contributing to the transition to 100% sustainable energy.