Sofar Solar Solar Inverters

Shenzhen SOFARSOLAR Co., Ltd., sold under the SOFAR name, has made solar inverters in Shenzhen, China, since 2013. It listed on the ChiNext board of the Shenzhen Stock Exchange in 2025, runs three research and development centers and two manufacturing bases, and has more than 20 offices worldwide.

SOFAR reports more than 48 GW of inverters shipped and systems installed in over 100 countries and regions, with the UK, Poland, Germany, Australia, Pakistan and South Korea among its markets. Its product line now reaches beyond inverters into home batteries, commercial storage and EV chargers.

SOFAR inverter range

The grid-tied G3 family is the backbone. Small single-phase TL-G3 models cover 1.1 to 3.3 kW, the KTLM-G3 models run from 3 to 10.5 kW, and the three-phase KTLX-G3 series spans 3.3 to 50 kW, with G4 models of 100–125 kW for commercial roofs. The letters are easy to read: KTLM means single-phase, KTLX three-phase, and an -A suffix marks a version for Australia.

For storage, the ESI series covers homes: S1 single-phase models from 3 to 12 kW and T1 three-phase models from 5 to 12 kW. SOFAR also makes the HYD-EP and HYD-3PH hybrids, and the HYD-T1 serves businesses from 40 to 60 kW.

What SOFAR is known for

SOFAR’s strength is breadth at modest sizes: one brand for a 1 kW balcony-scale system, a family home and a warehouse roof, with the same SofarCloud monitoring throughout. Around a third of its staff work in research and development.

The trade-off is that specifications vary a lot between generations. The HYD-EP hybrids accept 13 A per tracker and the early HYD-3PH units 12.5 A, far below what modern panels deliver, while the current ESI and KTLX-G3 models handle much more. Check which generation you are actually buying.

Matching panels to a SOFAR inverter

The lowest ceiling in the range is on the single-phase ESI S1 hybrids: 550 V maximum and a tracking window of 85–520 V. A 450 W panel with about 49 V open-circuit voltage can reach 54–55 V on a frosty morning, so ten in a string is already at the edge; nine is the safer choice in a cold climate. The KTLM-G3 string models allow 600 V, and every three-phase KTLX-G3 accepts 1,100 V with tracking up to 1,000 V.

Current is the other trap. The smallest TL-G3 units take 12 A on a single tracker, and the 3–12 kW KTLX-G3 models 15 A, so panels with 182 mm or 210 mm cells running at 13–18 A will be clipped; the Australian -A versions take 30 A. Try your panel with the exact SOFAR model in the string calculator, which checks cold-weather voltage, the MPPT window and per-tracker current.