The Generac GB1000 rates 3.1 among mid-size portable power stations; the Generac GB2000 rates 2.6 among large ones. The Generac GB1000 costs $899.01 less ($899.99 vs $1,799).
For buyers who want a Generac-backed 1 kWh station that can run 1,600W appliances and parallel with a second unit; LiFePO4 rivals offer more cycles and faster charging for the money.
ecobee (Generac) $899.99For Generac owners who want a 2 kWh battery that can parallel with a second unit; most buyers get more capacity, faster charging and longer battery life for less from LiFePO4 rivals.
Toolnut $1,799Prices were last checked October 24, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
These two sit in different size classes (mid-size and large), and each is scored against the reference points for its own class, so a rating says how well each does among its own size peers. How we rank explains each factor.
| Factor weight | Generac GB1000 | Generac GB2000 |
|---|---|---|
| Overall rating | 3.1/5 | 2.6/5 |
| Value 25% | 36 $0.83 per rated Wh | 15 $0.85 per rated Wh |
| Tested capacity 15% | 50 not yet independently tested (neutral score used) | 50 not yet independently tested (neutral score used) |
| Battery life 15% | 23 Li-ion NMC, 800 cycles, 3-year warranty | 24 Li-ion NMC, 1,000 cycles, 3-year warranty |
| AC output 15% | 74 1,600 W continuous AC | 7 1,600 W continuous AC |
| Charging speed 10% | 50 full AC charge time not published (neutral score used) | 50 full AC charge time not published (neutral score used) |
| Portability 10% | 68 83 Wh per kg (29 lb (13.2 kg)) | 100 108 Wh per kg (43 lb (19.5 kg)) |
| Solar input 5% | 33 468 W max solar input | 8 468 W max solar input |
| Features 5% | 0 no UPS, expansion or app | 0 no UPS, expansion or app |
| Generac GB1000 | Generac GB2000 | |
|---|---|---|
| Battery | ||
| Rated capacity | 1,086 Wh | 2,106 Wh |
| Chemistry | Li-ion NMC | Li-ion NMC |
| Cycle life | 800 to 80% (0.5C charge, 1C discharge at 25 C) | 1,000 to 80% (0.5C charge, 1C discharge at 25 C) |
| Expandable | No | No |
| Output | ||
| AC output | 1,600 W (3,200 W surge) | 1,600 W (3,200 W surge) |
| AC outlets | 3 total | 3 total |
| 120V 2-prong outlets (NEMA 1-15R) | 3 | 3 |
| USB-C ports | 2 (up to 65 W each) | 2 (up to 65 W each) |
| USB-A ports | 2 | 2 |
| 12 V car outlet | Yes | Yes |
| DC5521 ports | 0 | 0 |
| UPS / pass-through | No | No |
| Charging | ||
| AC charging | 450 W | 450 W |
| Max solar input | 468 W | 468 W |
| Solar input voltage | 10-28V, 30A max (shared DC/solar input) | 10-28V, 30A max (shared DC/solar input) |
| Build | ||
| Weight | 29 lb (13.2 kg) | 43 lb (19.5 kg) |
| Dimensions | 14.1 x 10.2 x 12.0 in | 16.8 x 10.4 x 15.1 in |
| Warranty | 3 years | 3 years |
| Released | 2022-09 | 2022-09 |
