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Inverter Feature Compare

Hybrid Inverter Feature Comaprison & Selection Guide

Use this guide to assist you in choosing the right inverter for your solar requirements ~ now and future.

Not all inverters are the same, so please carefully compare the features of one inverter vs. the other.

Energy Spark Inverter Technologies, include:

Select the system that best suits your 

Budget | Technology | Capacity | Future

Inverter… Power O/P (kW) Typical Efficiency (via PV) % Typical Efficiency (via Batts) % Nominal Voltage Charge Current DC/AC Overload Capability AC Inputs All-in-One Grid Support Enhanced Grid Support Grid Support Priority
Axpert 2.5 2.5 93 88 24/48 50/30 2x (2sec) 1 * * *
Axpert 4.0 4 93 88 24/48 25/30 2x (2sec) 1 * * *
Imeon 3/6 3 95.5 97 48 25/25 2x (15sec) 1 * * *
Ingeteam 1Play 3 3 95.5 89 48-300 50/13 1.8x (3sec) 1 * * *
Ingeteam 1Play 6 6 96 89 96-300 50/26 1.4x (3sec) 1 * * *
Schneider Electric SW 2.5 2.5 91.5 92 24 max/10.6 2x (5sec) 1
Schneider Electric SW 4 4 92 92 24 max/10.6 2x (5sec) 1
Schneider Electric XW+7.0 7 95.8 92 48 max/60 2x (60sec) 2 * * *
Schneider Electric XW+8.5 8.5 95.8 92 48 max/60 2x (60sec) 2 * * *
SMA Sunny Island 3/4 04/03/2015 95.8 93 48-63 max/63 1.8x (3sec) 2 * * *
SMA Sunny Island 6/8 08/06/2015 95.8 93 48-63 max/115 1.8x (3sec) 2 * * *
Inverter… PV Limit (W) Ease of Installation INET Monitoring Ease to Change Mode Battery Management Advanced Programming Sell To Grid Tier-One Gurantee Country of Manufacture
Axpert 2.5 600/ 900 *** * Easy * * 2 China
Axpert 4.0 3000 *** * Easy * * 2 China
Imeon 3/6 3150 *** * Easy ** * 5 France
Ingeteam 1Play 3 6500 ** * Easy * * * 5 Spain/ USA
Ingeteam 1Play 6 10 000 ** * Easy * * * 5 Spain/ USA
Schneider Electric SW 2.5 None * ** Moderate *** * * 2 France
Schneider Electric SW 4 None * ** Moderate *** * * 2 France
Schneider Electric XW+7.0 None ** *** Moderate *** * RTC * 5 France
Schneider Electric XW+8.5 None ** *** Moderate *** * RTC * 5 France
SMA Sunny Island 3/4 None * *** Moderate *** * RTC * 5 Germany
SMA Sunny Island 6/8 None * *** Moderate *** * RTC * 5 Germany
(iSense) Ready
Axpert 2.5 * * Easy * * 2 China
Axpert 4.0 * * Easy * * 2 China
Imeon 3/6 *** * Easy ** * 5 France
Ingeteam 1Play 3 *** * * Easy * * * 5 Spain/ USA
Ingeteam 1Play 6 *** * * Easy * * * 5 Spain/ USA
Schneider Electric SW 2.5 *** * ** Moderate *** * * 2 France
Schneider Electric SW 4 *** * ** Moderate *** * * 2 France
Schneider Electric XW+7.0 *** * *** Moderate *** * RTC * 5 France
Schneider Electric XW+8.5 *** * *** Moderate *** * RTC * 5 France
SMA Sunny Island 3/4 *** * *** Moderate *** * RTC * 5 Germany
SMA Sunny Island 6/8 *** * *** Moderate *** * RTC * 5 Germany
Terms Used
  • All-in-One: The inverter has a built in Solar input. It does not require an external Charge Controller or Grid-Tie (GT) Inverter.
  • Grid Support: Ability of the inverter to send excess solar power to the load if the Batts are fully charged.
  • Enhanced Grid Support: Ability of the inverter to do Grid Support and blend a percentage of battery energy with the excess solar energy to the load, while completing a full charge cycle of the batts.
  • Priority Grid Support: Ability of the inverter to do Grid Support and blend a percentage of battery energy with the excess solar energy to the load without completing a full cycle. Also known a Self-Consumption Mode.
  • Peak / Load Shaving: The ability of the inverter to use battery power to supplement grid power when a peak is detected (with RTC).
  • Stackable: The ability to add additional Inverters in parallel to increase inverter output.  Note: The Stack Limits (max output).
  • Sell to Grid: Exports excess/available DC power to the grid (Nett-Metering).
  • 3-Phase: The ability of the inverter to be configured into a 3-Phase output (usually 1x inverter per phase   or   multi-inverters per phase).
  • AC-Couple: The inverter can work in an Off-Grid configuration with a GT inverter connected on the AC output to supply the load and batts (at 95% – 98% efficiency). Typically for Day-Time Loads.
  • RTC Programming: The inverter programming can be configured using the Real Time Clock (RTC). For Advanced Programming functions.
  • Load Control DB (iSense): The ability for the inverter to control contactors (iSense) on a DB Board. To disconnect non-priority loads on loss of AC in.
  • Gen Start: The inverter can send a signal to a 2-wire or a 3-wire standby generator to Start/Stop. For backup AC battery charging & load supply.
  • Home Automation Ready: The inverter has the ability to communicate on common Home Automation protocols. Can pass performance data and control.
  • Ext Relay: The inverter has external relays which can control various external devices (via programming configurations) e.g. ext. fans, load control, generator start/stop, etc.
  • Li-ion Ready: The inverter has the ability to interface to a Lithium Ion Battery type.