• Cosun RS-Box Power Your Home 1280-699PX-2
  • Cosun Cooperation with Sun RS-BOX
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  • Solar+Storage  save more money
    Solar+Storage save more money
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    Cosun Pforzheim FB Banner
  • How Cosun Battery Cloud Works
    How Cosun Battery Cloud Works

About Us

Cosun New Energy specializes in advanced battery storage products and intelligent energy management solution for residential and small business application.

The company has been active since 2013 when Mr Murle, a TUV Rheinland certified photovoltaic expert in Pforzheim Germany and Mr John Zong,President of Bicosyn Energy Group, who decided to formally form their cooperation  to develop and install battery energy storage solar power system. That was a challenged work at that time but it went well that in 2016 they made the first Solar Power system RS-Box certified by TUV Rheinland, it was the first certificate issued per VDE 2510-50  in the world. “We only did less than hundred systems a year,we are an early pioneer in a infant industry that time.”
Cosun offers

Implementation-Ready full package Storage System
As an experience PV installer with 30+ years in electrical installation in Germany, Cosun is good enough to understand and know how to reduce installer’s precious time in procurement,installation,commissioning of the solar power system:

- Easy Procurement, Easy Partner Program for Installer
Ample stock in Germany and receives frequent shipments directly from China. 
Lead times are typically 1 – 2 weeks with stock in Pforzheim Germany.
Shipping times for a pallet from PF to main EU areas is approx. 10~15 days.
- Easy Installation
The Cosun batteries are simple to arrange and connect with all required components (connectors and fasteners)
- Easy Commissioning
With Cosun Inverter Automatic-Matching technology, no more time-consuming component of commissioning on the setup of the BMS to manage the battery bank and communicate with the different inverter.
Cosun Technical support staff engaged directly with Installer to help rectify integration and commissioning issues.



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  • Complete WARRANTY

    Complete WARRANTY

    10-Year Industry-Leading Warranty for whole system (not only battery)
  • TUV Certification

    TUV Certification

    Cosun Received the World first VDE-AR-E 2510-50 certificate issued by TUV Rheinland for RS-BOX 8700 Cosun Solar Power System.
  • Distribution in Germany

    Distribution in Germany

    10-15 Days Fast Deliver from Germany Warehouse for whole Europe, No more waiting for months to let customer down
  • Cosun Battery Cloud

    Cosun Battery Cloud

    Free Remote maintenance cloud: Monitoring,Parameter Setting, Alarm History and Firmware Upgrade, reduce Installer site visits.

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