SolarEdge
Enphase
System design and installation
Utilises a centralised inverter with individual power optimisers attached to each solar panel.
This design enables maximum power production from each panel, regardless of shading or performance variations, potentially leading to higher installation costs, especially for complex roof layouts.
However, the system relies on a single central inverter, creating a potential single point of failure.
Employs microinverters, individual units attached directly to each solar panel.
This modular approach eliminates a central point of failure and offers greater flexibility in system design, particularly for complex roof layouts or potential future expansion.
Monitoring and performance
Provides detailed panel-level monitoring through its cloud-based platform. This allows for the proactive identification of underperforming panels and troubleshooting potential issues.
However, the platform requires an internet connection and may incur additional fees.
Offers individual panel-level monitoring as well, accessible through its Envoy-S communication gateway. The system functions independently, eliminating reliance on an internet connection for basic monitoring.
However, advanced features and remote access may require an internet connection.
Efficiency and shading
Power optimisers can significantly boost energy production from shaded panels, bypassing the impact of shading on entire strings.
This is particularly beneficial for Australian homes with partially shaded roofs or unpredictable weather patterns.
Microinverters offer similar shading mitigation capabilities, ensuring optimal performance even in challenging conditions.
However, the individual inverter cost may be higher than SolarEdge’s optimisers.
Reliability and maintenance
The centralised inverter is a single point of failure, but the company boasts a high-reliability record.
Troubleshooting might be more complex due to the centralised design.
Microinverters are individually replaceable, potentially reducing downtime in case of failure.
However, the larger number of components might statistically increase the likelihood of needing replacements over time.
Cost and warranty
The overall system cost, including inverter, optimisers, and installation, can be slightly higher than Enphase due to the additional components.
However, the warranty coverage for the inverter is 12 years, while optimisers carry a 25-year warranty.
The upfront cost of the Microinverter systems might be lower, but the individual inverter warranty is typically 10 years.
However, the microinverters themselves boast a 25-year warranty.
Additional features
It offers a wider range of inverter sizes and is compatible with high-voltage batteries.
Provides a seamless integration with its own Enphase Ensemble smart energy management system.
