What’s the Difference Between Micro and String Inverters?

Explore the key differences between micro inverters and string inverters for residential solar systems in Europe. Learn which one fits your energy goals, budget, and roof design.

🔌 Introduction: Why the Inverter Type Matters

In a solar energy system, the inverter plays a critical role: converting direct current (DC) generated by solar panels into usable alternating current (AC) for your home. Choosing the right type of inverter — micro or string — can significantly affect your system’s efficiency, performance under shading, maintenance, and long-term costs.

This guide breaks down the differences between micro and string inverters, compares their pros and cons, and introduces options suitable for small European homes and balcony systems.

⚙️ What is a String Inverter?

string inverter connects multiple solar panels together in a series (string), and all DC electricity is routed to one central inverter for conversion to AC.

Advantages:

  • Lower upfront cost
  • Fewer components (one inverter for multiple panels)
  • Easier to maintain and monitor as a single unit

Disadvantages:

  • Entire string performance is affected by one shaded or faulty panel
  • Not ideal for complex or partially shaded roofs
  • Limited flexibility for panel layout

Best Use Cases:

  • South-facing rooftops with little to no shading
  • Budget-conscious installations
  • Large systems with uniform orientation

🔋 What is a Micro Inverter?

micro inverter is installed behind each individual solar panel, converting DC to AC on a per-panel basis.

Advantages:

  • Independent performance per panel (no impact from shaded neighbors)
  • Easier troubleshooting and real-time panel monitoring
  • Higher total energy yield in partial shading or mixed-orientation systems

Disadvantages:

  • Higher upfront cost (multiple devices)
  • Slightly more complex installation
  • Potentially more points of failure (if not using quality components)

Best Use Cases:

  • Rooftops with varying angles or partial shading
  • Small or irregularly shaped installations (e.g. balconies)
  • Systems with high energy output targets

🔍 Side-by-Side Comparison Table

FeatureString InverterMicro Inverter
CostLowerHigher
Performance in ShadeDecreases for all panelsPanel-level optimization
MaintenanceCentralized & simpleModular, per-panel troubleshooting
Installation ComplexityEasier (single unit)Slightly more complex
MonitoringWhole system viewIndividual panel monitoring
FlexibilityLow (one layout)High (varied panel orientation)
Suitable ForUniform rooftops, large systemsShaded roofs, small/balcony systems

💡 JYH Inverter: A Hybrid Micro Solution

JYHsolar offers a range of JYH-inverter models that bridge the gap between micro and string inverters. Our GTMI Series (300W–1600W) micro-inverter line is designed specifically for compact systems like balcony solar and small homes.

🔧 Features of JYH-inverter:

  • MPPT tracking for panel-level optimization
  • Grid-compliant (VDE, CE certified)
  • IP67-rated housing for outdoor durability
  • Available in 300W, 600W, 800W, 1000W, 1200W, and 1600W models

🔗 Product Datasheet: JYH GTMI Series Micro Inverter (PDF)

With over 96% efficiency and modular expandability, these inverters combine the strengths of micro setups with simplified system planning.

⚖️ How to Choose the Right Inverter for Your Setup

Ask yourself:

  • Is your roof shaded at any time of the day?
  • Are your panels installed at different angles or orientations?
  • Is precise panel monitoring important to you?
  • Do you plan to expand your system over time?

If your answer is “yes” to most, a micro inverter may be the better choice. If budget and simplicity are more important, a string inverter could work — as long as your roof has good solar exposure.

Need help deciding? Contact us for a free system assessment ➡️ JYH Contact Page

✅ Conclusion: Choose Smarter, Not Just Cheaper

While string inverters are cost-effective and ideal for simple systems, micro inverters offer greater flexibility, yield, and system intelligence. For Europe’s increasingly diverse residential setups — particularly those with space constraints or shading — micro inverters like the JYH-inverter series offer a future-proof solution.

Still not sure? Read our guide on How to Choose the Right Solar Inverter for Small Home Setups in Europe.

    watson lou
    watson lou

    Hello everyone, I am Watson Lou, the founder of jyhsolar.com. I have been engaged in the design, development, production and sales of solar energy related products for 10 years. I will use this section to share with you the knowledge related to solar energy, and share with you the latest industry trends and the latest products.

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