Invercargill has NZ's lowest solar yield — the far south location, frequent cloud cover, and short winter days make solar less effective than in northern NZ. However, rising electricity prices still make solar worthwhile, particularly with battery storage to maximise self-consumption. Here's what solar installation costs in Invercargill in 2026.
Invercargill Solar Installation Costs 2026
| System size | Invercargill typical cost (supply + install) |
|---|---|
| 3kW system (small home) | $6,500–$10,500 |
| 6.6kW system (standard home) | $8,200–$13,500 |
| 10kW system (large home / EV charging) | $12,500–$20,500 |
| Battery storage — 10kWh (add-on) | $9,000–$14,000 |
| Solar hot water (evacuated tube) | $4,500–$8,500 |
All prices GST inclusive. Below national average.
Invercargill Solar Performance
Invercargill has NZ's lowest solar yield — the far south location, frequent cloud cover, and short winter days make solar less effective than in northern NZ. However, rising electricity prices still make solar worthwhile, particularly with battery storage to maximise self-consumption.
Payback in Invercargill
At NZ electricity prices (~$0.30–$0.38/kWh), a 6.6kW system typically pays back in: - No battery: 6–10 years - With battery: 9–14 years
Solar adds to property value and payback improves as electricity prices rise.
Choosing a Solar Installer
- Look for SEANZ members (Sustainable Electricity Association of NZ)
- Ask for a site-specific production estimate based on your actual roof
- Compare warranties: panels (25yr), inverter (10–12yr), workmanship (5–10yr)
- Get at least 2–3 quotes
Find Invercargill solar installers: Solar Installers Invercargill | Post a Job Free
Related: Solar Panel Cost NZ | EV Charger Installation Invercargill