Alpha-ESS Smile5 Energy Storage system


New product

11.4kWH Lithium Ion Home Battery with built-in intelligent inverter 

For residential or small business applications.

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R 117,300.00 tax incl.

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Secure your energy independance with an Alpha-ESS Energy Storage System (ESS) for residential applications as used in the South Australian home battery scheme



11.4kWH Lithium Ion Home Battery with built-in intelligent 5kW inverter. 

All-in-one energy storage system. 11.4kWh battery capacity. Max 21.6 kWh battery capacity in the cabinet, expandable to 97.2 kWh.




  • Two powerful built-in MPPT's - simply add solar panels, no additional equipment required

  • Attractive modular design - add battery modules as you go - up to 97kWh.

  • 24/7 monitoring via web and Android/IOS app.

  • VPP (Virtual Power Plant) ready - co-ordinate charge and discharge across an residential estate.

  • Parallel two units for a 10kW output - backup your enitre residence.

  • Lithium iron phosphate, the safest chemistry of all lithium battery types

  • Compatible with both new installations and retrofits (AC- or DC-coupled)

  • German design, superb performance and long lifespan

  • Multiple operation modes available

  • 10 year battery warranty - 10 000 cycle life



ESS Layout



Output4600 WMax. Capacity34.4 kWh
BatterySMILE5-BATDimensions600 x 250 x 1800 mm
Battery Capacity 5.7 kWhWeight180kg




Built on the Microsoft Azure cloud server

Real-time monitoring anywhere with web and mobile apps

Remote control of system for maximum savings

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  • Asked by Jimmy
    on 17/05/2019
    what is the suggested solar panel size to recharge this unit for optimal use off grid Answer:
    Hi Jimmy, there is no number like this. You would size the panels according to your electricity consumption and your day/night usage split. The Alpha ESS system can accommodate 5 - 6kW of panels which in many parts of the country will produce around 20 - 30 units per day of which 11Units could be stored in the Alpha ESS batteries for night time use.
  • Asked by Rory
    on 31/05/2019
    MorningDoes this system work as a hybrid inverter in other words will it use a combination of grid , solar and batteries depending on how it’s programmed. Or would I be better off with your 6kw solar power solution and a Goodwe hybrid inverter Answer:
    Hi Rory. It does indeed. It has the same functionality as the Goodwe, only in an attractive package and is better value if you're looking for a decent amount of storage.
  • Asked by AJ
    on 18/06/2019
    Hi, can you connect AC from panels with microinverters to the Alpha ESS inverter for distribution to the DB and battery backup? Any recommended installers in the Pretoria area? Answer:
    Hi AJ, that certainly wouldn't be the recommended solution since the Alpha-ESS already performs the function of the micro-inverters. You will need to contact us via email for installer information.
  • Asked by Ganesh Prasad
    on 02/07/2019
    I have an Alpha-ESS Storion SMILE5 system - 17 x LonGi panels of 315 W, producing 5.3 kW, inverter and two batteries with a combined capacity of 11.4 kWh. But this only covers me for 2/3 of my power requirement. The remaining 1/3 I have to draw from the grid. With the same inverter, can I add more panels and more batteries? I'm guessing I need 6 more panels and one more battery, but what is the maximum expansion I can get with the current inverter? Answer:
    Hi Ganesh, yes you can add more panels. You can theoretically put 24 panels onto the system but you will experience some clipping at peak production. Adding more batteries is not a problem.
  • Asked by Jac
    on 09/07/2019
    Good dayCan the batteries be replaced after 10 years independently of the built-in inverter?RegardsJac Answer:
    Hi Jac, they certainly can, although we would hope they last longer than the guarantee period.