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Fox ESS - Intelligent energy storage solutions for a sustainable future

Fox ESS is a leading provider of energy storage solutions and innovative solar inverters. The company focuses on the development of highly efficient lithium batteries and intelligent energy management systems that are convincing in both residential and commercial applications. With advanced technology, Fox ESS ensures efficient storage and use of solar energy to optimize energy consumption and reduce costs.

Thanks to its solid market presence and commitment to quality, Fox ESS has established itself as a reliable partner in the solar industry. The products are characterized by a long service life, safety and user-friendliness. With flexible storage solutions tailored to different needs, Fox ESS is an excellent choice for sustainable and cost-efficient energy projects worldwide.
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Fox ESS - quality, experience and value for money in photovoltaics

Since its foundation in 2019, Fox ESS has established itself as an innovative provider of energy storage solutions. Despite the company's young history, Fox ESS offers highly efficient products that are designed for maximum performance and longevity. The company is known for developing advanced storage solutions that meet the highest requirements in commercial installations as well as in private households and government projects.

Experience and efficiency from Fox ESS

Fox ESS stands for innovation, continuous development and excellent performance. With a wide range of products, the company has established itself as an up-and-coming supplier on the global market. The products are used in private homes, commercial facilities and large public projects - proof of their outstanding quality and efficiency.

Why Fox ESS? - Your advantages at a glance

Fox ESS combines advanced technologies with high performance and an excellent price-performance ratio:

  • Best price/performance ratio: Fox ESS offers high quality at competitive prices and is one of the up-and-coming brands in the photovoltaic market.
  • Innovative technologies: With advanced energy storage systems, Fox ESS increases efficiency and maximizes energy yield.
  • Global presence: Fox ESS is active worldwide and supplies products for commercial and government projects.

Technological highlights and innovations at Fox ESS

Fox ESS uses the most advanced technologies to ensure maximum energy yield with minimum degradation:

  • High-voltage battery systems: These systems ensure higher efficiency and lower degradation, making the products particularly durable. They enable better energy generation, even under extreme conditions and at high temperatures.
  • Modular design: Fox ESS offers modular systems that absorb light on both the front and back. This maximizes energy production, especially on reflective surfaces such as water or sand.
  • Easy installation: By using half cells, Fox ESS reduces resistance and improves the performance of the modules, especially in partial shading, resulting in higher overall performance.

Fox ESS product series at a glance

Inverter
  • T SERIES (G3)
  • R SERIES
  • S SERIES (G2)
  • F SERIES (G2)
  • G SERIES
  • H1&AC1
  • AIO H1-AC1
  • H3/AC3 
  • H3 Smart 
  • H3 PRO 
  • G-MAX 
  • AIO-H3
  • M Series 

batteries
  • ECS2900
  • ECS4100
  • ECS4300H
  • ECS4800
  • EK5
  • EK11
  • HV2600

Find out more about our top brands Fronius, SMA Solar and Sungrow and find the perfect solution for your requirements.

Frequently asked questions

  • How long is the warranty on Fox ESS products?
    Batteries and AIO systems come with a standard 5-year warranty, while inverters come with a 10-year warranty period.
  • Is the production of Fox Ess products sustainable?
    The company's own production facility has an integrated PV power plant, which, with its capacity of 1.31 MWh, reduces carbon emissions by more than 1,000 tons per year. 
  • What is the price range of Fox Ess products?
    The products serve different price ranges. The S-series is the cheapest and is one of the less expensive inverters. The T-Series, for example, is significantly more expensive. Thus, Fox ESS offers products for different price ranges and every occasion. 
  • Which product series does Fox ESS offer?
    The S-Series: single-phase, single-MPPT inverter from 700W to 3kW. Small and compact, efficiency between 97.2% and 97.4%. 

    The F-Series: single-phase, dual-MPPT inverter up to 6kW. The efficiency is 97.4%. 

    The T-Series: three-phase inverters, yielding between 3 and 25kW. The efficiency is 98.6%. 

    The H/AC-Series (1st generation): single-phase hybrid/AC inverter, rated between 3 and 6kW. The efficiency is 97.8% and the (un)charging efficiency is (97%), or 98.5%.

    The H/AC series (3rd generation): three-phase hybrid/AC inverter with a nominal power of 5 - 12kW depending on the selected model. With an efficiency of 97.2% - 97.3% and a (discharge) charging efficiency of (97%), or 98.5%. 

    The AIO-Series: single or three-phase all-in-one storage system, which has a storage capacity between 3 and 10kW. The (discharge) charging efficiency is 97%.

    The ECS-Series: battery storage system in which up to 7 battery modules can be connected in series, enabling a maximum storage capacity of 20.16 kWh. The (discharge) depth of charge is 90%. 
  • What is the quality of Fox ESS products?
    By accessing the vertical production chain of Tsingshan Holding Group, Fox ESS is able to independently carry out every single production step required to manufacture a product. This ensures high quality at every step of the process, so that the final product is of convincing quality. 
  • Where does Fox produce and develop ESS?
    The heart of the Chinese company is the research and development center in Wuxi, where hundreds of engineering and technical employees are constantly working to perfect the products. The global headquarters of Fox ESS is located in Whenzou, China. 
  • What does Fox ESS specialize in?
    The company specializes in the development and research of new (hybrid and PV) inverters (single and three-phase) and energy storage solutions, as well as wallboxes. The three state-of-the-art R&D centers, staffed by leading personnel with outstanding expertise in their field, provide the necessary infrastructure so that employees can realize their full potential. 
  • Who is Fox ESS?
    Fox ESS is a Chinese global player founded in 2019 and a subsidiary of Tsingshan Holding Group, which has been offering its products to the photovoltaic market worldwide since April 2020. Fox ESS benefits from Tsingshan, the world's largest nickel miner as well as stainless steel producer and among the 500 largest companies worldwide, as a partner with its vertical production chains. Specializing in inverters and energy storage, the company also produces accessories for PV systems and e-mobility. Fox Ess aims to develop the most advanced, powerful and reliable.