Here are high-ball numbers for going off the grid; 2000 sf house in California:
- 30 panels ~ 10kw: $20K
- batteries ~ 10kwh: $8K.
- permits + labor: $20K (California...)
- 100+kwh EV with v2h bidirectional charging: $50K
- comparable ICE car (offset): -$40K
- heat pump water heater $1.5K
- heat pump furnace: $15K
- induction range: $2K
That adds to: $76.5K. Typical PG&E bills are $500-1000 per month. Budget $200 / month for gas. (Again, California prices.). That’s 63-110 months till break even, which is less than the expected lifetime of the panels + battery.
For another $10-20K, you can add propane backup, but I assume extended storms are rare enough to just charge the car and drive the electrons home a few times a year. A fireplace is about $5k installed.
Not going full off-grid is cheaper. So is scaling up to beyond one house.
Here are high-ball numbers for going off the grid; 2000 sf house in California:
- 30 panels ~ 10kw: $20K
- batteries ~ 10kwh: $8K.
- permits + labor: $20K (California...)
- 100+kwh EV with v2h bidirectional charging: $50K
- comparable ICE car (offset): -$40K
- heat pump water heater $1.5K
- heat pump furnace: $15K
- induction range: $2K
That adds to: $76.5K. Typical PG&E bills are $500-1000 per month. Budget $200 / month for gas. (Again, California prices.). That’s 63-110 months till break even, which is less than the expected lifetime of the panels + battery.
For another $10-20K, you can add propane backup, but I assume extended storms are rare enough to just charge the car and drive the electrons home a few times a year. A fireplace is about $5k installed.
Not going full off-grid is cheaper. So is scaling up to beyond one house.