Solar Panels and Certified Tesla Powerwall Installers servicing southwestern Ontario. Generate your own Clean Energy for your Home and Business with Solar Net Metering, Off-Grid, and Battery Storage Solutions. Guelph Greener Homes The City of Guelph is offering 0% interest-free loans up to $50,000 $5,000 grants and $40,000 interest-free loans are available with the Canada Greener Homes Initiative.