11-26-2017, 04:59 AM
Batteries are the weak point, but battery technology has come a long way and is continuing to improve. With grid tie-in you will still be a slave to Helco and subject to any power outages they have. Off-grid is the way to go. The only way you will know that that Helco is having outages is when you see your neighbors' lights all go out at the same time.