Comparison of SolarEdge system to Microinverters 

 

Module-level electronics overcome the shortcomings of traditional inverters and enable maximum power, module-level monitoring, flexible design and enhanced safety. However, there is no need to add an inverter to every module if DC power optimizers can achieve all these benefits at lower cost, higher efficiency and higher reliability.

 

 


Download the high-resolution movie that compares SolarEdge power optimizers to microinverters.

 se_vs_mis

A Comparison of Microinverters & Power Optimizers


Benefits

Microinverters

SolarEdge
Power Optimizers

 Details

Cost per W

Higher

Lower - 20-50% cheaper

  • Microinverters cost includes trunk cables and gateways

  • SolarEdge system cost includes inverter, built-in module-level monitoring and 25 year warranty for inverters and power optimizers

Scalability

Not scalable

Scalable

  • The cost/watt of a SolarEdge system decreases as installation
    size increases

Added Energy

Lower

Higher

  • Power optimizers have higher efficiency (99.5%) than microinverters
  • Reduced efficiency of microinverters increases heat dissipation
    which enhances module degradation
  • Microinverters have a higher minimum voltage than power
    optimizers:
    • Less shading tolerance
    • Late wake up leading to fewer production hour

Compatibility

Limited

Broad

  • Microinverters have a limited AC output power (e.g. no support for 72-cell modules)
  • When connected to higher capacity modules, the excess DC power is
    lost. E.g. in a 6kW installation of 260W modules, only 5kW AC power
    will be produced

Reliability

 Lower

Higher

  • Microinverters have much higher part count leading to increased
    failure rate
  • Some microinverters work with electrolytic capacitors which have
    short life time
  • Microinverters create higher temperatures