Photovoltaic / Guides

Tesla Solar Roof shingles
Solar photovoltaic

The Tesla Solar Roof: we love the hype, but we'd like to see some actual facts.

...photovoltaics (BIPV) has been around for over a decade. It's a great idea on paper, but because each shingle has to be connected individually it's quite a headache to install, so hopefully Tesla has something new to offer and isn't just repackaging old technology that never got far beyond being just a gimmick. If the...

Earthship in Taos, New Mexico, shame they don't work in cold climates
Concept and design

Do Earthships work in cold climates?

...photovoltaic solar panels and wind, propane is typically used for cooking, and in colder climates water heating. Rainwater is collected, stored in large plastic cisterns and filtered for residential use; waste water is treated on site and used for growing food. The south-facing wall is all windows and acts as a hea...

Solar thermal collectors

Product of the month: Solar water heater with overheating protection

Solar thermal panels in cold climates are at risk of freezing in winter, so in the North, we use a glycol mix as a heat transfer fluid. This prevents panels from freezing but introduces new problems in the summer months when they are at risk of overheating. There are two main types of residential solar thermal hea...