Average Costs
- Single Powerwall: ~$11,500.
- Installation: ~$3,000 if purchased through a third party.
- Total for 1–2 Powerwalls: $13,300–$20,300.
- Total for 3–4 Powerwalls: $27,300–$34,300.
Cost Breakdown
| Component | 1–2 Powerwalls | 3–4 Powerwalls |
|----------------------|--------------------|--------------------|
| Powerwall Battery| $11,500–$18,500 | $25,500–$32,500 |
| Gateway | $1,800 | $1,800 |
| Total Cost | $13,300–$20,300 | $27,300–$34,300 |
Tax Incentives
- Federal Solar Tax Credit:
- 2022–2032: 30%
- 2033: 26%
- 2034: 23%
- Credits apply to the full solar system (panels + Powerwall).
Tesla Powerwall Specs
- Capacity: 13.5 kWh (sufficient for backup or small appliances).
- Power Output: 5.8 kW (continuous), 10 kW (peak).
- Efficiency: 90% (above industry average of 80%).
- Battery Depth of Discharge (DoD): 100% (maximizes usable energy).
- Warranty: 10 years for Powerwall, 25 years for Tesla solar panels.
Powerwall Costs by Quantity
| Number of Powerwalls | Price per Powerwall | Total Cost |
|---------------------------|-------------------------|----------------|
| 1 | $11,500 | $11,500 |
| 2 | $9,250 | $18,500 |
| 3 | $8,500 | $25,500 |
| 4 | $8,125 | $32,500 |
System Options
- Solar Panels + Powerwall:
- Example: A small system (4.80 kW panels, 1 Powerwall) costs $23,550 before rebates and ~$16,500 after.
-
Energy Offset: ~55%.
-
Solar Roof + Powerwall:
- Example: A small roof system (8.67 kW shingles, 1 Powerwall) costs $60,000 before rebates and ~$42,000 after.
- Energy Offset: ~100%.
Potential Savings
- Utility Savings: $200–$400/year (varies by energy rates and consumption).
- California Rebates:
- Self-Generation Incentive Program (SGIP): Up to 20% off per Powerwall.
- Equity Resiliency Program: $850–$1,000/kWh for qualifying households.
Tesla Powerwall vs. Competitors
| Feature | Tesla Powerwall | Generac PWRcell | Enphase Encharge 10 |
|---------------------|----------------------|---------------------|-------------------------|
| Price | $10,500 | $10,000+ | $18,000+ |
| Storage | 13.5 kWh | 9+ kWh | 10.08 kWh |
| Continuous Power| 5.6 kW | 3.4+ kW | 3.84 kW |
| Warranty | 10 years | 10 years | 10 years |
Ongoing Costs
- Roof Cleaning: $295–$625 (to ensure optimal solar performance).
- Financing Costs: Varies by loan terms and interest rates.
DIY vs. Professional Installation
- DIY: Not an option due to Tesla's strict requirements for certified installers.
- Pro Installation: Ensure compliance, warranty protection, and safety.
Is the Tesla Powerwall Worth It?
- Yes, if you value long-term savings, energy independence, and reliable backup power.
- Recoup costs in 6–8 years, especially with tax incentives and local rebates.
Thinking of going solarThe Tesla Powerwall offers high efficiency, reliability, and peace of mind during outages.
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