Look up Drake Landing Solar Community - https://en.wikipedia.org/wiki/Drake_Landing_Solar_Community https://en.wikipedia.org/wiki/Drake_Landing_Solar_Community

Look up Drake Landing Solar Community - https://en.wikipedia.org/wiki/Drake_Landing_Solar_Community https://en.wikipedia.org/wiki/Drake_Landing_Solar_Community // https://www.dlsc.ca/reports/swc2017-0033-Mesquita.pdf https://www.dlsc.ca/reports/swc2017-0033-Mesquita.pdf It is mainly addressing winter heating rather than summer cooling (the cooling degree days are rather minimal - https://okotoks.weatherstats.ca/charts/cdd-weekly.html https://okotoks.weatherstats.ca/charts/cdd-weekly.html // https://weatherspark.com/y/2404/Average-Weather-in-Okotoks-Canada-Year-Round https://weatherspark.com/y/2404/Average-Weather-in-Okotoks-C... "Over the course of the year, the temperature typically varies from 13°F to 76°F and is rarely below -12°F or above 86°F.") That said, there's nothing saying that one can't use a heat pump to as a source of heat in the summer (which would also cool the house) in additional to other sources of thermal energy.