junkhound
Senior Member
- Location
- Renton, WA
- Occupation
- EE, power electronics specialty
Anyone done an off grid system? Lessons learned?
Have a grand-daughter and fiancé looking at building where bringing in grid power will run $20K.
Helping them look at alternatives, possibility of a wintertime creek flow of 1.4 GPS at 25 ft head, but just a trickle in late summer. Western WA so limited solar potential even in summer.
They think they can live with a 5-10 kW-hr per day summertime base (no AC needed).
I built a concentrating tracking solar array on Mt Haleakala 20 years ago that produced 15 kW-hrs per day that I could reproduce, but that was mountaintop HI vs. cloudy western WA.
My shop can build a 5 kW-hr Li-ion storage unit if I need to help them out, but probably need to replace every 4 or 5 years.
Have a grand-daughter and fiancé looking at building where bringing in grid power will run $20K.
Helping them look at alternatives, possibility of a wintertime creek flow of 1.4 GPS at 25 ft head, but just a trickle in late summer. Western WA so limited solar potential even in summer.
They think they can live with a 5-10 kW-hr per day summertime base (no AC needed).
I built a concentrating tracking solar array on Mt Haleakala 20 years ago that produced 15 kW-hrs per day that I could reproduce, but that was mountaintop HI vs. cloudy western WA.
My shop can build a 5 kW-hr Li-ion storage unit if I need to help them out, but probably need to replace every 4 or 5 years.