Battery backup seems like a great way to divorce yourself from the grid and solve this duck problem, except for the cost.
Whole house backup batteries are, for some reason much, much more expensive than electric vehicles despite not needing any of the car parts (motor, wheels, seats, chassis, etc.)
Comparing the Tesla Powerwall $9,200/13.5kWh ($681/kWh) vs Model 3 Battery: $14,000/75kWh ($186/kWh)
Why is there such a premium for house batteries, when there are even less engineering constraints on them?
Obviously there are inverters to pay for, but that can't explain a 4x difference in price?
Whole house backup batteries are, for some reason much, much more expensive than electric vehicles despite not needing any of the car parts (motor, wheels, seats, chassis, etc.)
Comparing the Tesla Powerwall $9,200/13.5kWh ($681/kWh) vs Model 3 Battery: $14,000/75kWh ($186/kWh)
Why is there such a premium for house batteries, when there are even less engineering constraints on them?
Obviously there are inverters to pay for, but that can't explain a 4x difference in price?