20kW Off Grid Solar Inverter, 220V

● 20kW high-power off-grid solar inverter and controller all-in-one machine, 192V battery voltage. ● Output pure sine wave, THD <4%, efficiency ≥90%. ● Equipped with overload protection, charging protection, short circuit protection, etc. ● A variety of modes can be set, flexible application in indoor and outdoor.
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Looking for a matching inverter for your high-power solar panels? This 20kW off-grid inverter will be your perfect choice! The built-in MPPT controller is 192V100A, with a PV operating voltage input range of 260V-420V in two circuits of up to 10kW each. Made with professional technology, no cutting corners and using inferior materials. It not only possesses powerful performance, but also has multiple automatic protection and alarm prompts, which can effectively prolong the service life of devices. Output high-quality pure sine wave, can be operated at -10~40℃, to meet the needs of most outdoor power use.

20kw off grid solar inverter feature


  • One-way reverse control all-in-one machine with built-in inverter, MPPT controller(192V100A) and battery(192V).
  • Dual CPU intelligent control, improve inverter efficiency, better load adaptability, more powerful performance.
  • LCD+LED display, real-time monitoring of machine parameters, operating status at a glance.
  • Body shell material using sheet metal & baking paint process, with strong shock resistance, anti-corrosion and impact resistance; intelligent fan control to improve cooling efficiency and prolong product life.
  • Utility mode/Power saving mode/Battery mode free switching, suitable for a variety of occasions.


  1. High quality metal casing.
  2. Protective cover for input terminals and high-power air switch.
  3. LCD display of parameters and multi-button control.
  4. Intelligent control fan for cooling.
  5. Side cooling mesh.
  6. Removable pulleys, easy to carry outside.
20kw off grid solar inverter details

20kW Off Grid Solar Inverter Connection Diagram

20kw off grid solar inverter connection

Rating Power 20kW
Input Voltage 220VAC±20%
Input Frequency 50/60Hz±5% (Adaptive adjustment)
Output Voltage 220VAC±2%
Output Frequency 50/60Hz±0.01%
Output Waveform Pure sine wave, THD<4% (Fully loaded)
Battery and Utility Grid Switching Time <30ms
Overload Capacity 120%, 20s; >150%, 100ms
Efficiency ≥90% (100% load)
Dynamic Load Voltage Transient <±5% (0-100)
Automatic Power On/Off Light-activated on + timed off (Programmable)
Battery Rated Voltage 192VDC
Battery Overdischarge Protection Voltage 172VDC
Controller Rated Current 100A
Controller Rated Voltage 192VDC
Controller Charging Access Ports 4
Controller Maximum Access Current 25A
Controller Solar Input Voltage <330VDC
Controller Overcharge Protection Voltage 222VDC (Programmable)
Controller Control Precision ±0.1
Controller Display Precision ±0.1
Controller Efficiency >95%
Ambient Relative Humidity 20-90% (Maximum)
External Dimension 536*560*1015 (mm)
Weight 240kg
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Q1. How many solar panels are needed to drive a 20kW off-grid solar inverter?

Assuming that a solar panel has a peak power of 300W, that the inverter is 95% efficient, and that you want the system's output to be close to 20kW under peak sunlight conditions, then, theoretically, 64 solar panels would be required. This is a figure based on ideal conditions, in practice you may need more solar panels to compensate for the effects of weather, dust, temperature changes and other factors.

Q2. What happens if I connect too many solar panels to 20kW off-grid solar inverter?

If a solar inverter is connected to solar panels that exceed its design load, its conversion efficiency will be compromised. If too many solar panels are connected, resulting in the generation of a current that far exceeds the maximum input current of the inverter, some of the power will be consumed by the inverter in the form of heat. Moreover, it will also cause the inverter to overheat, reducing its lifespan or even causing permanent damage, leading to fire and other safety risks.

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