#passive-thermal

6 articles · 18 raw sources · 5 inventory

52-home solar community in Okotoks, Alberta that achieved 97% solar fraction via seasonal borehole storage over 15+ years — then was decommissioned in 2024 when maintenance costs e…

Portable construction office trailers come standard on wheeled steel I-beam chassis with wood-frame walls (2x4 at 16" OC, R-21), making them better thermal stand-ins for residentia…

Factory production of container and modular buildings saves 10–20% over conventional construction at equivalent quality — a real but modest advantage. The value proposition for a p…

Peer-reviewed studies confirm 54–87% energy reduction in passive container retrofits, but summer overheating remains unsolved in the Passivhaus approach — the gap where Double Play…

Current cost data for the passive thermal competition: heat pumps average $15,393 installed nationally ($4,350/ton), while Passive House construction premiums have collapsed to 3.7…

First hard cost data for a Baer-style passive thermal system: Trombe walls cost ~$67/sqft installed with payback of 0.7–12.3 years depending on climate, a 2.1:1 benefit-cost ratio …

Inventory

Does the container prototype change the equation?

questionactivep2

Is passive thermal cost-competitive today?

questionactivep2

Could a demonstration neighborhood work?

questionactivep2

What would a passive thermal business model look like?

questionactivep2

Is the Solar Fools network a path to scale?

questionactivep2

Raw sources