X3-PRO-15K-G2
The Solax X3-PRO-15K-G2 is a 15 kW three-phase string photovoltaic inverter from the X3-PRO G2 series. With 2 MPPT, efficiency up to 98.5%, IP66 protection, and PV oversizing up to 150%, it is the professional solution for advanced commercial and residential systems from 15–22 kWp.
The Solax X3-PRO-15K-G2 is a 15 kW three-phase string photovoltaic inverter from the X3-PRO G2 series. Designed for medium-large photovoltaic systems in light commercial and advanced residential settings, it offers high efficiency, robustness, and smart features for optimal energy production management without battery storage.
Solax X3-PRO-15K-G2 Technical Specifications
| Nominal AC Power | 15 kW |
| Number of MPPT | 2 |
| PV Input Oversizing | 150% |
| Maximum Efficiency | 98.5% |
| Protection Rating | IP66 |
| DC Switch | Integrated |
| Export Control | Integrated |
| Dimensions | 482 × 417 × 181 mm |
| Weight | 26 kg |
| Warranty | 5 years |
Typical Applications
The X3-PRO-15K-G2 is the ideal choice for: light industrial and craft warehouses with roofs from 15–22 kWp, small shopping centers, farms with three-phase contracts, and condominium systems with a high share of individual production. The 98.5% efficiency makes it one of the most efficient three-phase string inverters in its category.
Frequently Asked Questions
What is the difference between the X3-PRO-15K-G2 and the X3-PRO-17K-G2?
The two models are structurally identical (same chassis, same 26 kg weight, same dimensions). The only difference is in the nominal power: 15 kW for the 15K-G2 and 17 kW for the 17K-G2. The 17K-G2 is preferable when the grid connection process or system sizing requires a nominal power higher than 15 kW.
Can the X3-PRO-15K-G2 be paired with batteries in the future?
The X3-PRO G2 is a string inverter without integrated battery management. To add storage, you can pair it with a Solax X1-FIT retrofit inverter or replace the inverter with an X3-Hybrid G4 or X3-Ultra. Alternatively, the system can be completed with a Solax hybrid inverter connected to the same strings on different MPPTs.
Is the X3-PRO-15K-G2 CEI 0-21 certified?
Yes, the X3-PRO G2 series is certified for grid connection in compliance with the CEI 0-21 standard for low voltage systems. The certificate of conformity is available in the official Solax documentation, which is required for the connection process with the local distributor.
How many kWp of panels can be connected to the X3-PRO-15K-G2?
With 150% oversizing, you can connect up to 22.5 kWp of photovoltaic generator. This ratio is suitable for systems with predominantly south-facing orientation, where the generator is fully exposed during peak hours and clipping is minimal. The designer must check the current and voltage limits of each MPPT.
Does the X3-PRO-15K-G2 include Wi-Fi monitoring?
No, Solax cloud monitoring requires the separate purchase of a connectivity dongle (Pocket Wi-Fi Plus 3.0 or Pocket LAN 2.0). Once connected, the inverter transmits data to the Solax Cloud platform, accessible via app and web portal. Without the dongle, the inverter operates normally but without remote visibility of production.
