In recent years, many investors in rooftop solar projects have been concerned about fire risks, shading losses, and mismatch losses between panels.
To help investors who are unsure whether to choose optimizers or micro inverters, we have prepared this detailed information guide.
You should have a specific reason for choosing micro inverters.
These devices can be more expensive than larger-capacity inverters in some projects,
but in others, they are far more economical and flexible.
FLEXIBLE INSTALLATION
Micro inverters operate on a panel-by-panel basis, independent of panel quantity, direction, or type.
This gives you complete design freedom — ideal for roofs with multiple directions or limited space.
MAXIMUM PANEL EFFICIENCY
Because each panel works independently, shading, cracks, or faults on one panel do not affect others.
Rather than “increasing” efficiency, micro inverters prevent efficiency loss, keeping your system running at maximum capacity.
NO SHADING ISSUES
Perfect for buildings with chimneys, vents, or other obstructions, as shadows on one panel do not impact the rest.
ZERO EXPORT WITH MAXIMUM PERFORMANCE
Micro inverters can be configured for single-phase or three-phase operation.
This is especially useful in systems where selling electricity to the grid is not allowed.
Traditional zero-export systems limit production to the lowest-loaded phase, wasting energy.
However, Hoymiles micro inverters independently manage each phase, eliminating these losses and ensuring balanced generation.
LONG LIFESPAN DESIGN
Built with passive components — no moving parts like fans.
Enclosed in IP67 waterproof housings, they are highly durable and resistant to environmental effects.
Unless exposed to extreme events (like lightning), failure is almost impossible.
Hence, manufacturers provide up to 12 years of warranty.
COMPATIBILITY
Micro inverters are compatible with string, central, hybrid, and optimizer-based systems.
They can easily integrate into or expand existing installations.
“LEGO-LIKE” MODULARITY
Each micro inverter can connect to 1, 2, 4, or 6 panels, and even if not fully connected, it continues to operate.
Since it outputs directly to AC, it offers huge flexibility — e.g., if a new chimney is added to your factory roof,
you can simply remove panels without affecting the rest of the system.
MAXIMUM FIRE SAFETY
Micro inverters eliminate DC cables that typically carry high voltage (up to 1000V) and current (6–20A).
DC arcs can easily ignite fires before traditional protection (fuses, breakers, or optimizers) react.
In contrast, micro inverters produce no voltage or current when the grid is off — making them the safest devices in the world for rooftop systems.
Small Rooftop Solar Projects (<30 kVA)
Ideal for homes, villas, and small-scale rooftops.
They are cost-effective, have a 12-year warranty, and allow individual panel monitoring.
Highly recommended for all systems below 30 kVA.
AREAS WITH FIRE RISK
In textile factories, chemical plants, or any facility with flammable materials,
micro inverters ensure maximum fire prevention and operational safety.
When the grid is disconnected, the system instantly becomes voltage-free and safe.
ROOFS WITH MULTIPLE DIRECTIONS
Villas and complex buildings often have 4–6 roof faces.
Traditional string inverters require at least 16 panels per string, all facing the same direction.
With limited roof space, this is often impossible — micro inverters are the only practical solution.
WHEN YOU DO NOT WANT TO SELL POWER TO THE GRID
For residential systems or projects under 10 kVA, if you prefer not to deal with grid-connection permits,
you can use the “Zero Export” mode, meaning no energy is sent to the grid.
Unlike conventional zero-export systems, micro inverters balance each phase independently,
reducing efficiency losses and improving payback time.
(Note: These systems can still sell power to the grid if properly connected and approved.)
For detailed technical specifications on Hoymiles Micro Inverter products, you can visit the manufacturer’s official resources.
At Orbit Enerji, we design and manage your investment to achieve the most efficient and cost-effective performance, selecting materials and technologies tailored to your needs.
If you would like our solar technicians to contact you, please leave us a message —
we’ll get in touch with you right away.