How Much Does Battery Storage Installation Cost?
Average cost: $10,000 | Range: $5,000 - $15,000
Average Cost
$10,000
Low End
$5,000
High End
$15,000
Time Required
1-2 days
What Affects the Price?
Battery capacity is the biggest driver. A single Tesla Powerwall (13.5 kWh) costs $8,500-$12,000 installed. Adding a second battery for whole-home backup adds $6,000-$8,000. Electrical panel upgrades are often required and add $1,500-$3,000. Enphase IQ batteries are modular at ~$5,000 per 5 kWh unit.
Key Cost Factors
- Battery capacity (kWh)
- Brand (Tesla, Enphase, Generac)
- Number of batteries
- Electrical panel upgrades
- Whole-home vs partial backup
- Installation complexity
Cost by State (Sample)
| State | Low | High | Avg |
|---|---|---|---|
| Alabama | $4,600 | $13,800 | $9,200 |
| Alaska | $7,000 | $21,000 | $14,000 |
| Arizona | $4,850 | $14,550 | $9,700 |
| Arkansas | $4,350 | $13,050 | $8,700 |
| California | $6,750 | $20,250 | $13,500 |
| Colorado | $5,400 | $16,200 | $10,800 |
| Connecticut | $6,100 | $18,300 | $12,200 |
| Delaware | $5,250 | $15,750 | $10,500 |
| Florida | $5,000 | $15,000 | $10,000 |
| Georgia | $4,750 | $14,250 | $9,500 |