Inverters · Small Commercial (15–30 kW)
Three-phase inverters in the 15–30 kW range — the sweet spot for SMEs, schools, and light industrial. Judged on efficiency ROI, string flexibility for complex commercial roofs, monitoring depth, and grid compliance. Backup matters less; bankability and O&M track record matter more.
Residential ≤15 kW · Small Commercial 15–30 kW · C&I ≥30 kW
Premium European
Fronius Verto 27.0
Fronius International GmbH
Superior
SMA Sunny Tripower 25.0
SMA Solar Technology AG
Very good
Value & Volume
Huawei SUN2000-30KTL-M3
Huawei Technologies Co., Ltd. / Huawei Digital Power
Superior
Solis S6 25K
Ginlong Technologies Co., Ltd. (Solis brand)
Very good
Sungrow SG25RS
Sungrow Power Supply Co., Ltd.
Superior
Growatt MID 25KTL3-X
Growatt New Energy Technology Co., Ltd.
Very good
GoodWe GW25K-MT
GoodWe Technologies Co., Ltd.
Very good
Scores are tier-weighted. Efficiency counts more in C&I; backup and aesthetics less. Full methodology.