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Find reviews of the best Solar Products, SMA Sunny Boy, Aurora Power-One, Growatt, SunPower, SolaX, QCells, Trina Solar, Jinko, Selectronic, Tesla Powerwall, ABB, SMA Sunny Island, Hybrid inverters, battery sizing, Lithium-ion, lead-acid batteries, off-grid, on-grid, stand-alone power systems

2. Complete hybrid systems with built-in battery storage

Jason Svarc

Complete hybrid systems with integrated energy storage are very simple to install and offer an attractive solution which eliminates the need to select and match individual components. These systems combine an inverter/charger, solar inverter, battery modules and energy managements system all in one unit. All available systems at this stage use lithium-ion batteries but only the Bosch, Fronius and Alpha systems are upgradable to enable future expansion.

These complete all-in-one systems may be very convenient but they do have some limitations, the main being the limited inverter power output and no pass-through power capability. This mean your home may require separation of essential and non-essential loads. Also be aware that some of these systems (Samsung) have no UPS function so no power is available during a blackout, although if grid outages are very rare then this may not be an issue.

The following list explains in detail the features and specifications of the various hybrid systems available. Also see the full hybrid inverter and energy storage system summary list here for easy direct comparison.

 

Solax X-Box from Suntellite Group

Suntellite Group headquarters is located in Zhejiang University with two major manufacturing plants, 14 laboratories and five engineering research and technology centers throughout China. SolaX Power a subsidiary of the Suntellite Group manufacturers solar cells, panels, inverters, solar racking and LED lighting technology.

Basic specifications:  (2 sizes available)

  • Type: Complete hybrid system with built-in battery storage
  • Use: Self-use, Back-up (UPS)
  • Solar Array Size (Solar input): 3.3kW, 5.0kW
  • Rated power output: 2.0kW, 4.0kW
  • Peak power output: 3.0kW, 6.0kW (10 sec)
  • Pass through power:  63A in standby mode
  • Battery type and capacity: Lithium LFP, up to 14.4kWh
  • Battery System Voltage: 48V

Features:

  • Attractive all-in-one system with simple installation
  • Large 7" touch screen display
  • Available in Single and 3-phase
  • Battery life of 4000 cycles at 80% DOD (claimed)

Note:

  • Must be installed indoors (IP20 rated)
  • Peak power output 1.5 x rated output for 10sec.
  • Uses the well known Pylon Tech lithium LFP batteries.

Price bracket – Medium

Fronius Symo Hybrid by Fronius International

Fronius Symo hybrid system.jpg

Fronius International is an Austrian company which began in 1945 designing and building welders. Fronius is now highly active in the fields of welding technology, photovoltaics and battery charging technology. It is claimed that Fronius and Tesla have partnered to offer the Powerwall in combination with the Fronius Symo Hybrid inverter as an integrated solution for residential PV systems.

Basic specifications:  (3 sizes available)

  • Type: Complete system with built-in battery storage
  • Use (3-phase only): Self-use, Back-up (UPS)
  • Solar Array Size (Solar input): 5.0kW, 6.5kW, 8.0kW
  • Power output (continuous): 3.0kW, 4.0kW, 5.0kW
  • Peak power output: dependent on battery size used
  • Pass through power:  None
  • Battery type and capacity: Fronius Battery: Lithium (LFP), 4.5kWh – 12kWh or Tesla Powerwall
  • Battery System Voltage: 48V or HV 400V

Features:

  • All-in-one unit - plus batteries
  • 3-phase inverter
  • DC coupling of storage
  • Long battery life - 8000 charging cycles at 80% DOD (claimed)
  • Inverter with IP65 protection (weather rated for outdoor installation)

Note:

  • Inverter also compatible with the Tesla Powerwall battery.
  • 3-phase inverter only - single phase to be released late 2016
  • back-up power enabled via "emergency power button"
  • Battery must be installed indoors (IP20 rated)

Price bracket – Medium/High

 

Samsung SDI by Samsung Group

Samsung is a South Korean multinational conglomerate company headquartered in Samsung Town, Seoul.  Samsung SDI began developing lithium-ion battery storage technology in 2000 and is now using this technology to design and develop eco-friendly energy solutions.

Basic specifications:

  • Type: Complete system with built-in battery storage
  • Use:  self-use, Back-up (UPS) version now available
  • Solar Array Size (Solar input): 6.6kW,
  • Sizes available (power output): 5kW
  • Pass through power: None
  • Battery type and capacity: Lithium-ion, 3.6kWh, (5.8kWh add-on ESS)
  • Battery System Voltage: n/a

Features:

  • All-in-one unit including solar inverter, batteries and system management
  • Additional storage can be added
  • Compact unit
  • Long battery life

Note:

  • UPS and backup capability with add-on ESS

Price bracket – Medium/high

PowerLegato by AU Optronics Corp (BenQ)

AU Optronics (AUO) is an international company with global operations spreading across Taiwan, China, Japan, Singapore, South Korea, USA, and Europe. AUO's solar business has been adopting BenQ Solar as its brand name to offer high efficiency, reliable solar products that are easy to install.

Basic specifications:

  • Type: Complete system with built-in battery storage
  • Use: Self-use, Back-up (UPS)
  • Solar Array Size (Solar input): 2.7kW, 4.5kW
  • Power output: 2kW, 3kW (peak output 3kW, 4.5kW)
  • Pass through power: None
  • Compatible Battery types: Integrated lithium-ion
  • Battery System Voltage: 48V

Features:

  • All-in-one unit including solar inverter, batteries and system management.
  • Simple installation
  • Compact unit
  • Long battery life

Note:

  • Low surge power capability

Price bracket – Medium

Storion S-series by AlphaESS

AlphaESS based in Jiangsu, China, have been developing economical energy storage solutions since 2012 and have distributed products in European and Australian markets. AlphaESS provides an integrated smart energy management system controller, hybrid inverter and battery modules in one complete unit.

Basic specifications:

  • Type: Complete system with built-in battery storage
  • Use: self-use, (UPS) backup
  • Solar Array Size (Solar input): 4.5kW-7.5kW
  • Sizes available (power output): 3.0kW, 4.6kW
  • Pass through power:  None
  • Compatible Battery types: lithium-ion modules, 5kW-19.2kWh
  • Battery System Voltage: 48V

Features:

  • All-in-one unit including, inverter, batteries and system management.
  • Simple installation
  • Powerful software and advanced communications (cloud monitoring)
  • Single and 3-phase units available
  • Large 7" touch screen display

Note:

  • Additional battery storage also available (expandable)
  • No additional pass through power
  • Uses the well known Goodwe hybrid inverter.

Price bracket – Low/Medium

BPT-S 5 Hybrid from Bosch*

* No longer available

The Bosch Group is a leading global supplier of technology and services, active in the fields of automotive technology, energy and building technology, industrial technology and consumer goods.

 Basic specifications:

  • Type: Complete system with built-in battery storage
  • Use: UPS and self-use
  • Solar Array Size (Solar input): 5.0kW
  • Sizes available (power output): 5.0kW
  • Pass through power:  None
  • Battery type and capacity: Lithium-ion, 4.4kWh - 13.2kWh
  • Battery System Voltage: N/A

Features:

  • All-in-one unit including solar inverter, batteries and system management.
  • Simple installation
  • Compact unit
  • Long battery life

Note:

  • Low surge power capability
  • One size only
  • Can only be used with Bosch lithium-ion battery modules.

Price bracket – High 

 

For direct comparison of all inverters & systems see the complete Hybrid Systems and Inverters Summary page.