"The prefab housing units also have solar panels that provide (4 hours of) electricity, something the tents do not have, despite the 6 PM dusk of the areas where they're most commonly used. It also provides energy for utilities during the day.
And see the roof of these prefab houses? They have a "shade net" which may look simple but actually makes a big difference. This reflects the sun's heat during the hot days and reflects the prefab home's heat at night to keep it warm at that time. Tents and tarps don't do these things."
Not for sale at Ikea. For refugees. If the solar panels are included in the $1100, that's a deal.
2 layers is something the US home industry needs to catch up on. You can close off the envelope and trap heat in, or open up the bottom and top and let the heat vent out.
Instead, the US just keeps ratcheting up the R-value, as if that is the ONLY THING.