Outback Power

SkyBox True Hybrid Energy System Grid Tie or Off Grid Inverter

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OutBack SkyBox True Hybrid Energy System Inverter

48 Volt Inverter for Grid-Tie or Off-Grid Applications.


SkyBox makes smart solar simple with an advanced technology single-box design and represents a breakthrough in the field of advanced power conversion, processing, and control. The fully integrated design of the SkyBox system eliminates external charge controllers and communication boxes, significantly cutting installation time and cost. Ease-of-installation makes this energy solution ideal for installers interested in following the market's move towards battery-based systems.


  • Easy and fast to install
  • Clean balance-of-systems, all in one box
  • High PV voltage input allows long strings


  • Extensive quality and reliability testing, including Highly Accelerated Life Testing (HALT)
  • Years of experience manufacturing products for fault intolerant, mission-critical applications
  • Standard 5 year warranty (extended 10-year warranty available)
  • Field upgradeable software


  • Dynamic power management
  • Ability to support any new regulations
  • Configure and take charge of your solar with any internet connected device and OPTICS RE


  • Backup power and support for time-of-use optimization
  • Compliant with California rule 21 and Hawaii 14H grid support requirements
  • Works with the widest variety of 48V battery chemistries
  • NEMA 3R


The SkyBox hybrid grid tie inverter can be used as a grid-tie inverter with or without a battery. When used with a battery it can be used to enhance self-supply of solar energy. This is useful when net-metering or grid feed is not available, or not advantageous financially. This system uses DC coupling for both the solar and the connection to the battery system for greater overall efficiency. The SkyBox uses any commonly available 48 VDC battery bank, any lead type, flooded, AGM, or gel, and many Lithium batteries. PV input voltage range is 200-600 VDC, allowing longer PV strings. Compliant with California rule 21 and Hawaii 14H grid support requirements.

The system features backup power; grid support; net metering; non-export; and prioritized charging from renewables. These features can use any of the loads in the house, including those on the main service panel, what we call "primary" self-supply. Backup power is available to the loads connected to the backup loads panel, with a quick transfer time of 20ms. Backup power capacity is 5 kW. The inverter has ground fault and arc fault protection built in. CT's can be installed on the house AC lines for export control. 



  • 5,000 W backup power at 120/240 VAC
  • Balance of Systems in one box
  • Monitor and control over the internet using OPTICS RE
  • Internal Arc Fault Circuit Interrupter (AFCI) for added safety per NEC 2011: 690.11
  • Maximum backfeed to array is <8ms
  • Built-in battery system monitoring
  • NEMA 3R outdoor rated
  • Meets CA rule 21 and HI 14H grid connection requirements
  • Inverter operating temperatures of -6 °F to +140 °F (-20 °C to +60 °C).



Grid and Loads
AC Voltage 120/240V (split-phase)
AC Frequency 60Hz
Max Continuous AC Output Power (@45°C) 5000VA (derate above 45°C)
Max Continuous Output Current (@ 240V) 24A @ 25°C
Total Harmonic Distortion Typical: <2% Maximum: <5%
Integrated Arc Fault Detection, Ground Fault Detection & Isolation, and Monitoring Yes
Power Factor at Rated Power 1
PV Input
Max PV System Voltage 600V
MPPT Voltage Range 200-600V
Max Input Current 20A
Max Short-Circuit Current 32A
Max Backfeed Duration (to array) <8ms
Reverse-Polarity Protection Yes
CEC Weighted Efficiency >94%
Typical Inverter Efficiency >97%
Transformerless, Ungrounded Yes
Unassisted Load Support from Battery Only 5000VA
Nominal DC Battery Voltage 48V
Battery Voltage Range 42-60V
Reverse-Polarity Notification Yes
Operating Modes
Immediate Battery Backup Power Yes
Grid Support (UL 1741 SA) Yes
Islanding Protection Yes
Net Metering Yes
Non-Export Yes
Maximum Independence Yes
Configurable Battery Charging Parameters Yes, to allow/disallow charging from AC for compliance with local regulations
Prioritized Charging from Renewables Yes
Additional Features
Listings/Certifications UL 1741 SA, CSA 22.2 No. 107.1, UL 1778, HECO Rule 14H SRD, CA Rule 21 SRD, IEEE 1547-2003, IEEE 1547.1-2005
RoHS Yes, directive 2011/65/EU
Weight (lb/kg) Unit: 110.6/50.2   Shipping: 134/60.8
Dimensions H x W x D (in/cm) 47 x 21 x 9.4 / 119.4 x 53.3 x 23.9
Operating Temperature Range -20 to 60°C
Non-Volatile Memory Yes
Field-Upgradable Firmware Yes
Chassis Type NEMA 3R



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