SEAI grant covers panels + inverter + mounting + labour. Apply at seai.ie before installation.
Huawei SUN2000-4KTL-L1 — Ireland 2026
Compact Huawei hybrid — ideal for 3–4 kWp systems in Irish homes
The SUN2000-4KTL-L1 is the 4kW variant of Huawei's flagship residential hybrid — the right choice for homes installing a 3–4 kWp solar system where the larger 5KTL would be over-specified. Identical FusionSolar monitoring, Luna2000 battery ecosystem, backup power, and 10-year warranty as the 5KTL — just at a slightly lower price point suited to smaller systems. The most common pairing for Irish semi-detached homes with limited south-facing roof space.
⚙️ Technical Specifications
| Inverter type | Residential Hybrid Inverter |
| Rated output | 4 kW |
| Power range | 3–5 kWp |
| Efficiency | 97.8% |
| MPPT inputs | 2 |
| Phase | Single Phase |
| Battery compatible | Yes — Huawei Luna2000 |
| Backup power | ✓ Yes |
| Monitoring app | FusionSolar |
| WiFi included | ✓ Yes |
| Warranty | 10 years |
| IP rating | IP65 |
| Suitable for | Residential |
💰 Complete system cost
Grant covers full installed cost — panels, inverter, mounting and labour. Apply at seai.ie before installation begins. SEAI-registered contractor required.
✅ What we like
- Same FusionSolar monitoring and Luna2000 ecosystem as the flagship 5KTL
- 10-year warranty — class-leading
- Backup power capability
- Right-sized for Irish semi-detached homes with 3–4 kWp systems
- ~€150 less than the 5KTL — savings passed directly to the homeowner
⚠️ Worth knowing
- Limited to 3–4 kWp systems — if you later want to expand, you may need to upgrade the inverter
- Huawei Luna2000 battery only — no third-party battery compatibility
📐 System sizes — full installed cost & SEAI grant
Full system costs include panels (avg 430W), this inverter (~€1,100), mounting and labour. SEAI Solar PV Home Grant of up to €1,800 applies to all components. Battery column adds a ~10kWh LFP battery (~€3,200 avg) — the grant does not cover batteries.
| System | Panels | Est. generation | Solar only (after grant) | + Battery 🔋 | Est. payback |
|---|---|---|---|---|---|
| 3 kWp | 7 panels | ~2,700 kWh/yr | ~€4,000 | ~€7,200 | ~11 yrs |
| 4 kWp | 10 panels | ~3,600 kWh/yr | ~€4,900 | ~€8,100 | ~10 yrs |
🔧 Complete your solar system
The SUN2000-4KTL-L1 is Step 2 — you need panels before it and most Irish homeowners now add battery storage after. Here are the most popular pairings in 2026:
🚗 Add an electric car — charge it from your solar inverter
Your inverter converts roof solar into electricity — your EV turns it into free kilometres. See all 205+ EVs in the EV Vehicle Directory.
☀️ Compatible solar panels
The SUN2000-4KTL-L1 is compatible with all major solar panel brands available in Ireland. See the Solar Panel Directory to compare specifications, pricing and SEAI eligibility for all 13 panels.
🔋 Battery compatibility
The SUN2000-4KTL-L1 supports battery storage. Compatible batteries are listed below. See the Battery Storage Directory for detailed specifications and pricing.
❓ Questions about the SUN2000-4KTL-L1
⚡ Also consider
Other solar inverters available in Ireland.