The GoodWe UT series are three-phase grid-tie utility-grade inverters, designed specifically for large-scale solar farms and ground-mount installations where stability and ease of service are paramount. A key feature is the high number of MPPT (12 or 15) inputs, facilitating generator segmentation into multiple sections - effectively aiding in managing different tracker orientations, uneven terrain, and partial shading by enabling each tracker to precisely optimize the string operating point.
From a yield perspective, high European efficiency is crucial - in practical terms, this means fewer losses under typical operating conditions in Poland and more predictable annual energy production. The UT series supports solutions enhancing reliability in challenging environments, including PID protection functions and comprehensive overvoltage protection on both DC and AC sides.
Remote monitoring is enabled through communication via the SCU unit (HPLC), which simplifies monitoring and O&M in large projects. The UT series is tailored for investors and contractors who demand grid-friendly operation, grid code certifications, and reliable performance.
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Pros and cons
The number of independent 12-15 MPPT trackers in a 300 kW utility-class string inverter is one of the highest in the string inverter segment above 300 kW (for comparison, Sungrow SG350HX offers 12 MPPT). This translates to precise division of the farm into sections with different orientations of the panels, uneven terrain, and partial shading, minimizing cross-shading losses.
A peak efficiency of 99.01% with a 1500 V DC main and 99.9% MPPT tracking accuracy translates to lower conversion losses compared to older 1000 V DC projects. A wide operating MPPT range (480-1500 V) increases the flexibility of string design and improves performance under the variable solar irradiance typical of Poland.
The 320 kW model maintains its rated power at ambient temperatures up to 45°C, which is important when installed in outdoor enclosures or in areas with high solar exposure. The operating range of the device is from -35°C to +60°C, which meets the requirements of the Polish climate throughout the year.
The enclosure, rated IP66, and optional anti-corrosion protection C5 (for marine and industrial environments according to ISO 12944) increase the lifespan of the inverter in harsh environmental conditions - making it suitable for farms located in coastal areas or near industrial facilities.
GoodWe achieved Tier 1 status from BloombergNEF in Q2 2025, with a cumulative installed capacity exceeding 100 GW globally and an annual production capacity of 35 GW. The BNEF Tier 1 status is a standard requirement for financing utility-scale projects by banks and infrastructure funds, making it easier to secure long-term financing (project finance) for UT-series investments.
The UT 320/350 kW series was launched on the market in 2023-2024, which means a limited database of long-term agricultural installations compared to more established competitors (e.g., Sungrow SG350HX with deployments starting in 2020). For projects with long-term Power Purchase Agreements (PPAs) or financing requirements from EBI/EBOR, additional justification for the chosen technology may be required.
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About the GoodWe UT series
These answers cover the whole series. Where a figure differs, the specification above is this model's own.