Fox ESS T20-G3 20kW Inverter: The High-Yield Three-Phase Commercial Solar Inverter

The Fox ESS T20-G3 delivers a substantial 20kW of three-phase power, making it an excellent choice for medium-to-large commercial solar inverter applications in the UK. Part of the advanced G3 generation, this string inverter is engineered for high efficiency and reliability, ensuring optimal energy conversion from large solar panel arrays to reduce operating costs and enhance sustainability.

Flexible Design for Large Solar Arrays

What type of inverter handles large commercial roofs effectively? The T20-G3 features dual Maximum Power Point Trackers (MPPTs), with the capacity for two strings per MPPT (2+2 configuration), as detailed in the product datasheet. This allows for flexible system design, effectively managing large numbers of solar panels potentially spread across different orientations or subject to varying shade conditions, maximising the overall energy harvest (up to 30kW DC input recommended).

Outstanding Efficiency for Commercial Viability

Maximise the financial return of your solar project. The T20-G3 inverter boasts a very high maximum conversion efficiency of up to 98.6%, according to the Fox ESS technical specifications. This top-tier performance minimises energy losses, ensuring that the vast majority of the solar power generated is converted into usable AC electricity, contributing directly to reduced energy expenditure.

Reliable Operation with Active Cooling

Designed for sustained high-power output, the T20-G3 utilises fan cooling, as noted in the datasheet, to maintain optimal performance under demanding commercial loads. Its IP65-rated enclosure ensures robust protection against environmental factors when installed outdoors. Professional installation using appropriate heavy-gauge solar cabling and commercial-grade solar mounting systems is crucial for safety and longevity.

Comprehensive Monitoring & Safety

Maintain visibility and control over your solar asset. The T20-G3 supports optional WiFi or 4G modules for connection to the Fox ESS Cloud platform, allowing detailed remote monitoring of energy production and system status via app or web portal. The datasheet confirms standard safety features like DC reverse polarity protection and AC overcurrent protection, with optional AFCI available.

Why Evergy Recommend This Product

The Fox ESS T20-G3 is a strong contender for commercial solar projects:

• High Power Output: 20kW capacity meets significant commercial energy generation targets.
• Flexible Input: Dual MPPTs with 2+2 string capability handle large, complex arrays.
• Excellent Efficiency: Up to 98.6% maximum efficiency maximises energy yield and ROI.
• Active Cooling: Fan cooling ensures reliable performance under high load.
• Advanced G3 Technology: Represents the latest in Fox ESS string inverter design.

Ideal For / Target Audience

This 20kW three-phase string inverter is ideally suited for:

• Medium-to-large commercial buildings (factories, warehouses, office blocks).
• Agricultural facilities or industrial sites with substantial roof space.
• Installations requiring high power output and flexible solar panel string configuration.
• Projects focused on maximising energy yield and achieving rapid payback.

Please Note: This is a grid-tied string inverter converting DC solar power to AC. It does not directly incorporate battery storage functionality.

Technical Specifications Overview

Key specifications for the T20-G3 based on the datasheet include:

• Rated AC Output Power: 20000W
• Number of MPP Trackers: 2 (2+2 Strings)
• Max. Efficiency: 98.6%
• Max. Input Voltage: 1100V
• Cooling: Fan
• Protection Degree: IP65

For complete technical information, please view the specifications tab or the full Fox ESS T-Series G3 datasheet. This series ranges from the T6-G3 (6kW) up to the T25-G3 (25kW). Other models include the T8-G3, T10-G3, and T15-G3.

Maximise Your Commercial Solar Returns

Choose the Fox ESS T20-G3 inverter for high-yield performance in your commercial solar installation. Ensure it is correctly matched with high-power solar panels and installed using robust commercial-grade mounting systems. Contact Evergy’s commercial team for project consultation and support.