The OGA was established in June of 2009. The Ontario Geothermal Association (OGA) is a not-for-profit organization representing geothermal energy system designers, drillers, installers, equipment manufacturers and distributors to advance Ontario’s geothermal heating and cooling industry. The OGA strives to be a bridge between consumers, government and industry professionals while acting as a voice to increase awareness for the importance of working towards the use of a greener, cleaner, and self-sustainable energy source.