posted 5 years ago
Wow, I have a passive solar heated home and I love the idea of this automatic curtain!
I can think of two reasons why a person might want it powered directly off a small solar system. One is, if it is an off-grid weekend or ski cabin, the small solar power operating the curtains could make a big difference in heating the house and keeping it warm till the occupants need it.
At my house the electricity is unreliable. In winter, mains power comes only for a few hours in the morning and evening. I have a couple of nice little solar lanterns that do us fine when the power goes out for an evening or a few days. They can charge a phone during sunlight hours, too. For cooking we use gas. In winter the pantry is as cold as the fridge anyway, so that's fine too. But I can imaging an automated curtain system might make a degree or a few degrees of difference when the occupants are not able to come home exactly at the right time in the afternoon. The coldest 6 weeks of winter is when it would matter for my house, and that is also when mains power doesn't come until after dark.
Works at a residential alternative high school in the Himalayas SECMOL.org . "Back home" is Cape Cod, E Coast USA.