What’s the Difference Between Micro and String Inverters?

🔌 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?

A 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?

A 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

💡 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.