10 inverters scored · August 2026

Small Commercial inverters (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.

Maker status:no notesfinancial note, still tradinginsolvency / administration / exitDetails on each scorecard
Residential <=15 kWSmall Commercial 15-30 kWC&I >=30 kW

Market context

Global benchmark

Global evidencechange in the site menu

Premium European

Verto 27.027kW

Fronius  Three-phaseString4 MPPTs

77

Superior

Sunny Tripower 25.025kW

SMA  Three-phaseString2 MPPTs

73

Very good

Value & Volume

HIT L G312–20kW

Hoymiles  Three-phaseHybridEssential-load backup

80

Superior

SUN2000-30KTL-M330kW

Huawei  Three-phaseString4 MPPTs

77

Very good

MID 25KTL3-X25kW

Growatt  Three-phaseString3 MPPTs

75

Very good

GW25K-MT25kW

GoodWe  Three-phaseString3 MPPTs

73

Very good

SDT G35–20kW

GoodWe  Three-phaseString3 MPPTs

72

Very good

Inverter

X3 Ultra15–30kW

SolaX  Three-phaseHybridWhole-home backup

81

Superior

Powerwall 3P Integrated Inverter5–15.4kW

Tesla  Three-phaseHybridWhole-home backup

70

Very good

PLENTICORE G34–20kW

KOSTAL  Three-phaseHybrid3 MPPTs

66

Good

Maker status:no notesfinancial note, still tradinginsolvency / administration / exitDetails on each scorecard

Scores are tier-weighted. Efficiency counts more in C&I; backup and aesthetics less. Full methodology.