Tesla Powerwall 3
Tesla Powerwall 3 is on the Japanese ZEH list (SII), first listed Jul 31, 2026.
Tesla Powerwall 3 is listed with 13.5 kWh usable energy and 14.4 kWh nominal energy.
Tesla Powerwall 3 is listed with 9.6 kW continuous power.
Tesla states 13.5 kWh nominal energy (United States).
Tesla states 5.8 kW to 11.5 kW continuous power (United States, AC, grid-code output setting, one of four).
Warranty terms: 10 years (United States); warranted throughput: 37.8 MWh (United States, only applications outside solar self-consumption, time-based control and backup); capacity at warranty end: 70% (United States).
Tesla Powerwall 3 is in the Japanese ZEH list (SII) as of Oct 23, 2026.
Brand: Tesla
Product history
Tesla Powerwall 3 has a recorded SII listing date of Jul 31, 2026. It was in the Japanese ZEH list (SII) by Sep 23, 2026.
Published figures
| Figure | Value | Publisher | Source |
|---|---|---|---|
| Usable energy | 13.5 kWh | Japanese ZEH list (SII) | Japanese ZEH list (SII), retrieved Oct 23, 2026 |
| Nominal energy | 13.5 kWh | Manufacturer Not yet checked | Spec sheet, at p.2 / System Technical Specifications, retrieved Sep 23, 2026 |
| Nominal energy | 14.4 kWh | Japanese ZEH list (SII) | Japanese ZEH list (SII), retrieved Oct 23, 2026 |
| Continuous power (AC, grid-code output setting, one of four) | 5.8 kW | Manufacturer Not yet checked | Spec sheet, at p.2 / System Technical Specifications, retrieved Sep 23, 2026 |
| Continuous power (AC, grid-code output setting, one of four) | 7.6 kW | Manufacturer Not yet checked | Spec sheet, at p.2 / System Technical Specifications, retrieved Sep 23, 2026 |
| Continuous power (AC, grid-code output setting, one of four) | 10 kW | Manufacturer Not yet checked | Spec sheet, at p.2 / System Technical Specifications, retrieved Sep 23, 2026 |
| Continuous power (AC, grid-code output setting, one of four) | 11.5 kW | Manufacturer Not yet checked | Spec sheet, at p.2 / System Technical Specifications, retrieved Sep 23, 2026 |
| Continuous power | 9.6 kW | Japanese ZEH list (SII) | Japanese ZEH list (SII), retrieved Oct 23, 2026 |
| Off-grid continuous power (configurable off-grid maximum, PV only, −20 to 25°C) | 15.4 kW | Manufacturer Not yet checked | Spec sheet, at p.2 / System Technical Specifications, retrieved Sep 23, 2026 |
| Motor start (LRA) | 185 A | Manufacturer Not yet checked | Spec sheet, at p.2 / System Technical Specifications, retrieved Sep 23, 2026 |
| Units per system (4 Powerwall 3 + 3 Expansions) | Up to 7 units | Manufacturer Not yet checked | Spec sheet, at p.2 / System Technical Specifications, retrieved Sep 23, 2026 |
| Lowest operating temperature | −20°C | Manufacturer Not yet checked | Spec sheet, at p.3 / Environmental Specifications, retrieved Sep 23, 2026 |
| Highest operating temperature | 50°C | Manufacturer Not yet checked | Spec sheet, at p.3 / Environmental Specifications, retrieved Sep 23, 2026 |
| Weight | 124 kg | Manufacturer Not yet checked | Spec sheet, at p.4 / Mechanical Specifications, retrieved Sep 23, 2026 |
- Tesla Powerwall 2 and Powerwall 3, side by side
- Enphase IQ Battery 5P and Tesla Powerwall 3, side by side
Stated stack range
One unit: 13.5 kWh nominal. Up to 7 units.
up to 4 Powerwall 3 + 3 Expansions
Stated temperature limits
Stated operating range: −4°F (−20°C) to 122°F (50°C).
Battery’s stated motor-start current: 185 A (LRA means locked-rotor amps, a motor’s starting current). Compare starting current.
Warranty terms
| Term | Figure | Document |
|---|---|---|
| Warranty, United States | 10 years | Warranty, at p.1 / Ten Year Limited Warranty, retrieved Sep 23, 2026, dated May 6, 2026 |
| Warranted throughput, United States | 37.8 MWh (only applications outside solar self-consumption, time-based control and backup) | Warranty, at p.1 / Energy Retention table, row 2, retrieved Sep 23, 2026, dated May 6, 2026 |
| Capacity at warranty end, United States | 70% | Warranty, at p.1 / Energy Retention table, retrieved Sep 23, 2026, dated May 6, 2026 |
Features the manufacturer states
| Feature | Stated | Source |
|---|---|---|
| Coupling | AC or DC Not yet checked | Web page, at Design Considerations / Compatibility table, retrieved Sep 25, 2026 |
| Whole-home backup | Yes Not yet checked | Manual, at p.8 / Whole Home Backup System, retrieved Sep 25, 2026 |
| Backup | whole or partial home backup via Gateway 3, Backup Switch or Backup Gateway 2 Not yet checked | Web page, at Design Considerations / Compatibility table, retrieved Sep 25, 2026 |
| Built-in inverter | Yes Not yet checked | Web page, at Design Considerations / Solar, retrieved Sep 25, 2026 |
| Compatible inverters | Tesla Solar Inverter or third-party solar inverters (AC-coupled), DC solar direct to Powerwall 3 Not yet checked | Web page, at Design Considerations / Compatibility table, retrieved Sep 25, 2026 |
| Enclosure rating | NEMA 3R, IP67 (battery & power electronics), IP55 (wiring compartment) Not yet checked | Spec sheet, at p.3 / Environmental Specifications, retrieved Sep 23, 2026 |
| Grid voltage | 120/240 V AC Not yet checked | Spec sheet, at p.2 / System Technical Specifications, retrieved Sep 23, 2026 |
| Dimensions | 1105 x 609 x 193 mm Not yet checked | Spec sheet, at p.4 / Mechanical Specifications, retrieved Sep 23, 2026 |
Configurations
Configurations named by the figures
- Powerwall 3, 7.6 kW inverter setting
- Powerwall 3, 10 kW inverter setting
- Powerwall 3, 11.5 kW inverter setting
Registered inverter settings
- Powerwall 3, 5 kW inverter setting
- Powerwall 3, 5.75 kW inverter setting
Government and program lists
| List | Where | Status | Entries |
|---|---|---|---|
| Japanese ZEH list (SII) | Japan | Listed since Jul 31, 2026. No further status accompanies the listing. | Entries: 1 |
Installs
Medians require at least 20 priced installs for the named measure and period.
- Connecticut records 191 installs: 185 in 2025–2026 and 6 with no approval year. Source: Connecticut Energy Storage Solutions — enrollment. Median battery cost per kWh: $879, from 191 priced installs (185 in 2025–2026 and 6 with no approval year).
What Connecticut homes paid
All years includes 6 installs with no recorded approval year.
Figures are medians. Parentheses give the middle half of prices. A dash means too few prices for a median.
| Year | Pairing | Installs | Battery cost per kWh | Total battery cost | Contract price | Up-front incentive |
|---|---|---|---|---|---|---|
| All years | All pairings | 1916 with no approval year | $879 per kWh (middle half $701–$1,101)191 priced installs: 185 in 2025–2026 and 6 with no approval year | $22,498 (middle half $16,578–$30,269)191 priced installs: 185 in 2025–2026 and 6 with no approval year | $37,600 (middle half $23,685–$58,992)191 priced installs: 185 in 2025–2026 and 6 with no approval year | $4,303 (middle half $1,620–$8,517)188 priced installs: 183 in 2025–2026 and 5 with no approval year |
| All years | Paired with solar PV | 1704 with no approval year | $910 per kWh (middle half $728–$1,110)170 priced installs: 166 in 2025–2026 and 4 with no approval year | $22,325 (middle half $16,519–$29,740)170 priced installs: 166 in 2025–2026 and 4 with no approval year | $39,853 (middle half $26,621–$61,666)170 priced installs: 166 in 2025–2026 and 4 with no approval year | $4,303 (middle half $1,755–$8,587)167 priced installs: 164 in 2025–2026 and 3 with no approval year |
| All years | Standalone | 212 with no approval year | $778 per kWh (middle half $686–$881)21 priced installs: 19 in 2026 and 2 with no approval year | $27,820 (middle half $21,600–$34,720)21 priced installs: 19 in 2026 and 2 with no approval year | $27,820 (middle half $21,600–$34,720)21 priced installs: 19 in 2026 and 2 with no approval year | $1,755 (middle half $810–$7,020)21 priced installs: 19 in 2026 and 2 with no approval year |
| 2025 | All pairings | 50 | $1,051 per kWh (middle half $910–$1,252)50 priced installs, 2025 | $23,242 (middle half $15,687–$31,437)50 priced installs, 2025 | $60,965 (middle half $46,305–$79,058)50 priced installs, 2025 | $5,737 (middle half $4,000–$8,606)49 priced installs, 2025 |
| 2026 | All pairings | 135 | $800 per kWh (middle half $696–$1,047)135 priced installs, 2026 | $21,600 (middle half $17,136–$29,774)135 priced installs, 2026 | $30,729 (middle half $21,600–$44,066)135 priced installs, 2026 | $3,510 (middle half $1,215–$7,430)134 priced installs, 2026 |
| 2026 | Paired with solar PV | 116 | $803 per kWh (middle half $700–$1,044)116 priced installs, 2026 | $21,600 (middle half $16,996–$28,400)116 priced installs, 2026 | $34,720 (middle half $21,600–$52,615)116 priced installs, 2026 | $3,510 (middle half $1,620–$7,928)115 priced installs, 2026 |
| 2026 | Standalone | 19 | —19 priced installs, 2026 | —19 priced installs, 2026 | —19 priced installs, 2026 | —19 priced installs, 2026 |
Contract prices may include solar or other equipment. Prices are before the up-front incentive. Approvals run through Sep 29, 2026. Counts and prices are from the program’s Oct 1, 2026 release.
Compared with the Sep 1, 2026 release, the Oct 1, 2026 release adds 19 installs of this battery.
Recalls and safety notices
No notice in the recall sources this site reads is matched to this product. That is not a safety finding. See every recall notice.
- UL 9540 listed: Yes
- UL 9540A tested: Yes
The maker states the listing or test. The listing body's records have not been checked.
Backup hours from your load
This battery has no maker-stated usable energy on this site.