Microinverter vs String Inverter — Which Is Better?
Published 2026-02-20 · Updated 2026-07-07 · MySunROI Research Team
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Microinverters optimize each panel individually — better for partial shade. String inverters cost less and work well on unshaded roofs. Both are proven technologies.
Microinverters (Enphase)
- Per-panel optimization
- Better shade tolerance
- Higher cost (~$0.20–$0.40/W more)
- Easier single-panel replacement
String inverters
- Lower cost
- Centralized — one failure point
- Optimizers (SolarEdge) bridge the gap
- Best on clean, unshaded roofs
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Frequently Asked Questions
Which lasts longer?
Both last 10–25 years. Microinverters have more components; string inverters are simpler.