Inverters are the heart of any solar installation. They convert the DC electricity generated by panels into AC power usable by household appliances and the grid.
Three Main Inverter Types
- Central Inverter – Large, high‑capacity unit handling multiple strings; best for commercial rooftops.
- String Inverter – One inverter per several panels connected in series; common for residential systems.
- Micro‑Inverter – Small inverter attached to each panel; maximises output from each panel individually.
Pros and Cons
| Inverter Type | Advantages | Drawbacks |
|---|---|---|
| Central | High efficiency, lower cost per kW | Single point of failure, complex installation |
| String | Easy to install, cost‑effective for homes | Shading on one panel affects whole string |
| Micro | Optimises each panel, better shading tolerance | Higher upfront cost, more components |
How Solarium360 Matches Inverter to System
- Site Survey – Determines roof size, shading, and load profile.
- System Design – Calculates total kW and selects compatible inverter size (usually 80‑110% of array rating).
- Compatibility Check – Ensures inverter works with selected panels (MPPT range, voltage).
- Future Expansion – If you plan to add panels later, a micro‑inverter or string inverter with spare capacity is advised.
Key Inverter Features to Look For
- MPPT Tracking – Maximises power extraction.
- Grid Support Functions – Reactive power control, anti‑islanding protection.
- Warranty – 5‑10 years typical, with optional extension.
- Monitoring – Built‑in Wi‑Fi or Ethernet for real‑time data.
Case Example: Selecting an Inverter for a 7 kW Home
For a home with moderate shading, Solarium360 recommended a 8 kW string inverter with three MPPT inputs. This choice balanced cost and performance, allowing 5% extra capacity for future panel additions.
Conclusion
Choosing the right inverter is crucial for system reliability and profitability. Let Solarium360’s engineers guide you to the optimal solution based on your unique needs.