The inverter is the brain of your solar system: it converts the panels’ DC energy to AC for home use. Two main technologies exist: central (string) inverter and microinverters. Each has advantages and costs. Which to choose?
Central (string) inverter
One big inverter for all panels. Panels connect in series (string) to the inverter.
- Pros: lower price, simple install, established brands (Huawei FusionSolar, SMA Sunny Boy, Fronius Primo).
- Cons: if one panel gets dirty or shaded, it affects the whole string. System-level monitoring, not panel-level.
- Typical cost: $15,000 – $35,000 for residential systems.
- Typical warranty: 10 years.
Microinverters
One small microinverter per panel. Each panel works independently and delivers AC directly.
- Pros: max yield (no shade losses), per-panel monitoring, higher safety (no high DC voltage on roof).
- Cons: more expensive, more components on roof.
- Leading brand: Enphase IQ8.
- Typical cost: $1,800 – $2,500 per panel (vs $30 – $50 per panel with central inverter).
- Typical warranty: 25 years (same as panels).
Conclusion
No universal winner. Depends on your roof, budget and priorities. At I-Vert Energy we recommend the best option for your specific case after evaluating your property. Learn about our selection process.
