Ningbo Sunways Technologies Co., Ltd
No.1, Lvyuan Road, Green Industrial Zone, Cixi, 315334, Ningbo, Zhejiang
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Staff Information

No. Staff: 200

Useful Contacts

Contact Face
Marketing Manager
Company Description
Sunways is a PV technology company founded in Konstanz, Germany in 1993, and it was purchased by Shunfeng International Clean Energy Group (SFCE) in 2014. Sunways has been developing, manufacturing, distributing high-efficiency inverters which utilize cutting-edge technologies for more than 25 years, and it's one of the oldest PV technology companies in the world.
Sunways production has now moved to Cixi, China for economy of scale while German technical standards are still in use and practiced. These include the material selection, software control algorithm, R&D processing procedures, test standards and production management system process.
The production facility in China is around 4000m² in size, with an inverter production capacity of about 10,000 units per month. This will soon increase to 20,000 units per month through further production line expansion.
Technological innovation is one of Sunways core competences. With an R&D team 50+ strong, each member holds at least 10+ years experience, many of which come from highly regarded PV/inverter manufacturers. With strong capabilities in independent innovation, the Sunways R&D team has developed a series of products and solutions for residential, commercial and utility-scale PV systems which constantly meet the changing market demands. These demands are met through fast paced & ongoing development cycles.
Business Details
Component Types
Inverter, Storage System, Monitor, Data Logger, Combiner Box, PID Solution
Storage System
Category: On-grid, Off-grid, Intelligent
Technology: Lithium Ion
Type: On-grid, Off-grid, Hybrid
Power Range (kWp): 1-136
Parent Company SFCE
No. of Known Sellers Inverter 12 Sellers, Storage System 1 Sellers
Product Videos



  • STT-4-25KTL-P
    4.4 ~ 25 kW On-Grid
  • STT50-60KTL-P
    55 ~ 82.5 kW On-Grid
  • STH 4~12KTL-HT
    4.4 ~ 13.2 kW On-Grid, Hybrid
  • STS-3-6KTL-P
    3.3 ~ 6.6 kW On-Grid
  • STS-1-3.3KTL-S
    1.1 ~ 3.3 kW On-Grid
  • STT 80-125KTL
    88 ~ 137.5 kW On-Grid
  • STH 3~8KTL-HS
    3.3 ~ 8 kW On-Grid, Hybrid
  • STS-7-11KTL
    7.7 ~ 11 kW On-Grid, Hybrid
Company Updates
25 Jun 2021 5.100% Export Limitation in each phase 6.Grid phases equiliberium regulation 7.Super Powerful load adaptability
25 Jun 2021 Seven leading features about Three-phase Hybrid Inverter: 1. Wide power range 2. Uninterrupted Power Supply 3.Multi hybrid inverter works in parallel mode 4.0-110% unbalaced output
16 Jun 2021 Sunways displayed three of their popular products at SNEC, including STS 5KTL single-phase solar inverter, STT 20KTL three-phase inverter, and STT 100KTL three-phase inverter.
Additional Offices
+86 510 85317452
We use these batteries in our isolated installations because they use gel technology, they don’t need maintenance and their products always comply with regulations
-- Inelsa, S.L.
Company News
Last Update: 11 Aug 2021