SolarEdge technology overview

A short comparison of the three inverter topologies - string inverters, microinverters and SolarEdge DC optimized inverters. Learn how the SolarEdge solution combines the best of both worlds

Up to 25% more energy

Increased energy yield & faster return on investment (ROI) through module-level MPPT

Lifetime Revenue

MPPT per module:

  • Each module produces maximum power independently of other modules in the string
  • Underperforming modules do not affect the production of the whole string

Power optimizers enable installation of:

  • Modules in partially shaded areas
  • Strings of uneven lengths
  • Strings in multiple orientations and different roof facets

Traditional inverter: 149.5 kW DC

SolarEdge: 200 kW DC 34% added power

These conditions lead to more modules on the roof resulting in more power and revenue.

Lower O&M cost

Increased energy yield & faster return on investment (ROI) through module-level MPPT

Alerts for modules & inverters underperformance

Know before you go:

  • Identify underperformance
  • Use charts to analyze underperformance
  • Schedule maintenance according to problem severity and effect on system performance
  • Fewer trips to site, less time spent on-site

Constraint free design

Maximum space utilization with minimum design time

Simple system design

Typical String Inverter SolarEdge
Limited string length 26-60 modules per string (up to 12.75kW)
Must match string lengths per MPP tracker Uneven strings can work in parallel
Shaded modules affect the entire string Only shaded modules are effected
Cannot mix different types of modules Any module size or type can be used
Locked in to same orientation/tilt per MPP tracker Any orientation/tilt

Enhanced safety solution

Safety during installation, maintenance, firefighting, & other emergencies


Superior Safety

SolarEdge provides superior safety compare to traditional string and central inverters. Traditional inverter is only able to shut down the inverter and will terminate the electric current flow. However, electrocution risk still remains, since DC voltage in the string cables will stay high for as long as the sun is shining.

SolarEdge SAFEDC ™

SolarEdge SAFEDCTM ™ offers a safety features to module-level to minimize the electrocution risk. It can ensure the installers, maintenance personnel and firefighters during the maintenance or installation. When the grid or inverter is shut down, power optimizer acts to automatically switch into safety mode to 1V of output voltage on each module. Thus, string voltage is below the risk levels.

Module-level shutdown is designed to occur automatically in either of these cases:

  • During installation, as long as the string is disconnected from the inverter, or the inverter is turned off
  • During maintenance or emergency, when the inverter is turned off or when the AC connection of the building is shut down
  • When the thermal sensors of the power optimizers detect a temperature above 85oC

ARC Fault Detection and Interruption

SolarEdge inverters are designed to mitigate effect of some arcing faults that may lead to risk of fire. Solar US Standard, NEC2011, includes requirement for serial ARC detection and for manual, on-site restart after an arc detection event. The non-US SolarEdge inverters can detect and interrupt arcs as defined by the UL1699B standard. This standard includes manual restart and auto-reconnect.

Reduce BoS Cost

34% BoS Cost Saving (less string, less wiring, less combiner boxes, less fuses with up to 50% reduction)
Due to considerably longer strings, the SolarEdge solution enables significant saving of DC Balance of System components and labor (SolarEdge: 45 Strings of 34-36 panels ; Traditional inverter: 580 strings of 20 panels)
  Traditional Inverter SolarEdge
DC cable 1*6mm (m) 9,469 3,754
MC4 connectors (pairs) 160 90
SolarEdge 3 strings DC box - 15
Traditional Inverter 10 strings DC box 8 -
Communicztion gateway 1 -
Cost 100% 66%
Savings of ~0.75c/w
  • Traditional 27.6kW string inverter: 4 m/kW DC
  • SolarEdge system: 0.45 m/kW DC
  • In MW-scale systems the saving can amount to thousands of Dollars

Increased System Availability

  • Bypass diode seems to have short circuited - faulty module shows 2/3 of the voltage
  • Issue pinpointed to module-level
  • Installer can proactively provide service at his convenience
  • Quick and easy resolution will generate more energy for the owner for system lifetime

Future compatibility & warranty

Low-cost inverter replacement, long inverter warranty, free lifetime monitoring, reduce time spent on site, increase system uptime.

  • Lower-cost inverter replacement after warranty
  • ~40% less than traditional inverters
  • Module replacements - with SolarEdge there is no need to keep module stocks. Any module available in the market would fit
  • Expansion - new power optimizers and modules can be utilized in the same string with older models
  • Products are certified as resistant to ammonia corrosion in agricultural areas

Lifetime Revenue / Quick Payback

  • More module, more energy, shorter payback period
  • Higher lifetime value by maximizing yield and reducing BoS and system lifetime O&M costs