it's been around a while
Passive solar technology has been around since cavemen started setting up households in caves facing southerly exposures. With no modern heating conveniences these pre-historic families would have appreciated curling up in a cozy sunny location after a long day of hunting and gathering.
Fast forward a few thousand years to around 1200 AD and people known as the Anasazi (the Ancestral Pueobloan people) began carving out homes in a south facing cliff located in Southwestern Colorado, now known as the Mesa Verde Cliff Dwellings.
Being on a cliff made it a natural fortress against intruders and acted as a protection against the elements. The Anasazi took advantage of the cliff’s southerly orientation to utilize nature’s solar heating which would have been much needed throughout the long cold Colorado winters.
And they took it a step farther. Taking into account intense summer heat, they carved out these dwelling deep into the cliff creating a rock overhang, thus shading the whole complex from the heat of the summer sun which followed a high arc across the sky at that time of year. And in winter when the heat was needed most, the sun, travelling on a lower arc, would directly reach the front of the dwellings. The massive rock, that was their village, absorbed the energy from the sun, thus providing heat even after sunset.
This Mesa Verde Cliff Dwelling is a prime example of the beginnings of the passive solar technology we know today.
Trout River Homes continues to use these common sense principles combined with the stringent Passive House standard to construct homes that use 90% less heating and cooling energy than current homes built using conventional methods.