Huawei SUN2000-3K-LB0
A 3kW residential hybrid inverter compatible with the LUNA2000 battery: 2 independent MPPTs, IP66 protection and a 10-year warranty for your roof.
Characteristics
- Power: 3000W (3.3kVA), single-phase
- Solar input: 4500Wp, 2 independent MPPTs
- Battery compatibility: LUNA2000, plug and play
- Protection: IP66, AFCI, 10-year warranty
- 2 MPPTs, IP66 and plug and play LUNA2000 battery
Detailed overview: Huawei 3kW hybrid inverter for the home
The Huawei SUN2000-3K-LB0 is a hybrid inverter for a fixed, grid-tied solar installation on a house roof, distinct from balcony micro-inverters or portable power stations. It converts the DC power produced by panels into single-phase AC power fed into the home, while optionally managing a home battery.
On the solar side, it carries two fully independent MPPT (Maximum Power Point Tracking) trackers, accepting up to 4500Wp of panels in total across a 40 to 560V voltage range. That independence lets you install panel strings facing different directions (east and west, say) without one shading string dragging down the other's output. Grid output tops out at 3000W (3.3kVA), a size built for a typical family home rather than a large commercial roof.
The unit is battery-ready from the box: it pairs in plug and play fashion with one or more LUNA2000 batteries, and switches to backup power in around 20 milliseconds during a grid outage, fast enough that most sensitive electronics won't even notice. Safety is well covered too, with AFCI arc-fault detection able to cut the circuit on a DC cable fault, a feature often skipped on entry-level inverters.
Rugged (IP66, operating from -25 °C to +60 °C) and compact (425 x 376 x 150mm, 15kg), it's controlled through the FusionSolar app over built-in Wi-Fi, with real-time production monitoring and remote firmware updates. The manufacturer warranty runs 10 years. One thing worth knowing before buying: Huawei announced in late 2025 that it is winding down its UK residential solar business, which does not affect availability or support in France, Germany, Italy or Spain, where the brand remains a solid player in residential solar.
Full specifications
Detailed characteristics
Power and protection
| Output power?Maximum power delivered (for storages with a 230 V output). | 3000 W |
|---|
Solar section
| MPPT controllers?Number of built-in MPPT solar controllers (lets you connect panels facing different directions). | 2 |
|---|---|
| Max solar input?Maximum connectable PV power. | 4500 W |
| Micro-inverter?Power of the inverter that feeds energy back into the home grid. | 3000 W |
Connectivity
| Wi-Fi?Remote control and updates over Wi-Fi. | Yes |
|---|
Durability and format
| Ingress protection?Water and dust resistance (IP rating). | IP66 |
|---|---|
| Weight?Weight of the battery. | 15 kg |
| Dimensions (L × W × H)?Length × width × height, in millimetres. | 425 × 376 × 150 mm |
Availability and warranty
| Warranty?Length of the manufacturer's warranty. | 10 years |
|---|
Comparison
How does the Huawei SUN2000-3K-LB0 compare with other residential hybrid inverters in its class?
| Criterion | Huawei SUN2000-3K-LB0 | SMA Sunny Boy Smart Energy 4.0 | Kostal PLENTICORE plus 4.2 |
|---|---|---|---|
| AC power | 3000W, single-phase | 4000W, single-phase | 4200W, three-phase |
| MPPTs | 2 independent | 3 | 3 |
| Backup switchover | ~20ms (with LUNA2000) | Yes (EPS, 3680W max) | Depends on battery setup |
| Ingress protection | IP66 | IP65 | IP65 |
| Warranty | 10 years | 10 years | 5 years (10 with activation) |
The Huawei SUN2000-3K-LB0 stands out for its price-to-spec ratio on a modest-sized home: its IP66 rating beats the competition here and its roughly 20ms backup switchover is among the fastest around. The SMA and Kostal units target larger systems (4 to 4.2kW, three-phase for the Kostal), at a noticeably higher entry price. For a first grid-tied solar system with a future battery option, the Huawei remains the most accessible of the three, where the brand is still sold.
Related video
Video: Mise en service onduleur Huawei sun2000
Our tester's review: Julien De Jurquet
On paper the SUN2000-3K-LB0 ticks every box for a serious residential inverter: two genuinely independent MPPTs (handy when one roof face shades in the afternoon), an IP66 enclosure that shrugs off an outdoor mount, and arc-fault detection (AFCI), a real safety feature you don't get everywhere at this price point. The FusionSolar app is thorough, a bit dense on first launch but quickly readable once the production widgets are set up. The real strength is the LUNA2000 ecosystem: adding a battery later doesn't mean swapping the inverter, and the roughly 20ms backup switchover keeps sensitive electronics running through an outage. Two honest caveats: the 3000W AC output can feel tight for a heavily electrified home, and Huawei announced in late 2025 that it is withdrawing from the UK residential market, worth knowing before you commit if you're in Britain. Where the brand remains strongly established, continental Europe in particular, this stays a dependable pick for a first grid-tied solar system with a battery option.
Frequently asked questions: Huawei 3kW hybrid inverter for the home
Yes, it works in straightforward self-consumption from day one, no battery required. Adding one or more LUNA2000 batteries later is plug and play, with no need to swap the inverter or rewire the main circuit.
Up to 4500Wp spread across two independent MPPT inputs, for a grid output capped at 3000W. That headroom lets you oversize the panel array slightly relative to the AC output.
With a LUNA2000 battery connected, the inverter switches to backup power in around 20 milliseconds, fast enough that most electronics don't even restart.
No. Huawei announced in late 2025 that it is exiting the UK residential solar and battery storage market, and its products are no longer available new through UK distributors from 2026. Existing installations keep their warranty. The brand remains fully active in France, Germany, Italy and Spain.
Yes. Unlike a balcony micro-inverter, a residential inverter wired into the consumer unit must be installed by a qualified electrician and registered with the grid operator (such as a G98/G99 notification in the UK) before commissioning.
Need help choosing?
Other products in the "Hybrid residential inverters" category
EG4 12kPV Hybrid Inverter
£2224.00
The EG4 12kPV turns up to 12000 W of solar into 8000 W of usable household power, charges your batteries and can sell the surplus back to the grid.
Kostal PLENTICORE plus 4.2
£1151.00
A three-phase 4.2kW residential hybrid inverter with 3 MPPTs and smart battery management: the German pick for a well-equipped home.
SMA Sunny Boy Smart Energy 4.0
£1340.80
A 4kW residential hybrid inverter with 3 MPPTs, EPS backup power and the SMA Home Storage battery ecosystem, built for a fixed rooftop solar system.
Sol-Ark 15K Hybrid Inverter
£3707.00
The Sol-Ark 15K delivers up to 15000 W continuous, accepts 19500 W of solar across 3 MPPT trackers, and switches to backup in 5 ms to protect the whole house.
Published on 04/09/2026