Goal Zero Yeti 1000 vs Growatt VITA 550
Side-by-side on the specs that decide it — surge, capacity, runtime and price.
Both models' specs verified against manufacturer listings · Last updated
The short answer
Growatt VITA 550 costs $800 less. Whether that gap is worth closing depends on what you need to run.
- Goal Zero Yeti 1000 holds 84% more energy (988Wh vs 538Wh), so it runs the same load proportionally longer.
- Goal Zero Yeti 1000 has 2400W more surge headroom (3600W vs 1200W) — that decides whether a fridge, pump or AC compressor will actually start.
- Growatt VITA 550 is 17.7 lb lighter (17.6 lb vs 35.3 lb).
- Goal Zero Yeti 1000 is rated for 4,000 cycles vs 3,000 — meaningful if you cycle it daily.
Goal Zero Yeti 1000
The 6th-gen Yeti 1000 finally brings a real 2,000W inverter to Goal Zero's mid-size. Now it competes on output, not just toughness.
Best for: Buyers who want Goal Zero's ruggedness with real appliance-starting output.
Where it falls short:
- 35.3 lb for under 1kWh is heavy
- Premium price against lighter rivals
Growatt VITA 550
A tidy half-kWh unit with fast charging and a 1,200W surge that lets it start small appliances a 600W rating wouldn't suggest.
Best for: Campers who want fast charging and a bit of surge headroom at half a kWh.
Where it falls short:
- 538Wh is weekend-scale
- 3-year warranty
| Spec | Goal Zero Yeti 1000 | Growatt VITA 550 |
|---|---|---|
| Price | $1199 | $399 |
| Capacity | 988 Wh | 538 Wh |
| Continuous output | 2000 W | 600 W |
| Surge output | 3600 W | 1200 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 4,000 | 3,000 |
| Weight (lighter wins) | 35.3 lb | 17.6 lb |
| Max solar | 600 W | 300 W |
| Recharge time (faster wins) | 1h 12m | 1h |
Runtime head-to-head
| Appliance | Goal Zero Yeti 1000 | Growatt VITA 550 |
|---|---|---|
| Refrigerator | 14.0 hrs | 7.6 hrs |
| Mini fridge | 26.7 hrs | 14.5 hrs |
| Chest freezer | 10.5 hrs | 5.7 hrs |
| CPAP machine | 21.0 hrs | 11.4 hrs |
| Sump pump | 1.0 hrs | ❌ |