Solar Inverters: On-Grid, Off-Grid, Hybrid and Pump

On-grid inverters for grid-connected projects

The on-grid section includes brands such as Solis, Sungrow, Huawei, SMA, Goodwe, Solplanet, INVT, Fimer and Sineng. Live examples include Solis S5-GC and S5-GR3P models, Solis-110K-5G-PRO and Sineng SN15PT and SN20PT listings. Compare the exact phase, AC output, grid connection and PV input configuration. Do not infer backup operation from an on-grid power rating.

Off-grid and hybrid equipment

Off-grid listings include Growatt SPF models and Polaris equipment, while the hybrid directory includes Growatt, Deye, Sungrow, Solis, EcoFlow, Auxsol and other brands. Off-grid and hybrid are catalogue groupings; the exact model documentation determines operating modes and battery requirements. Define the loads, grid availability and intended storage arrangement before choosing a model. A similar power rating does not make two inverters interchangeable.

Pump inverter requirements

The pump-inverter section includes Saj equipment. Start with the motor and pump duty, then check the inverter output, supported motor configuration and PV input limits against the manufacturer documentation. Include the pump application and operating requirements in the quotation request so the offer can be assessed against the actual load.

Check the complete electrical and storage design

Compare AC power and phase separately from PV input voltage, current and MPPT configuration. For a storage project, request model-specific battery compatibility and communication information, including any required accessories. Review applicable grid requirements with the project team. Use the RFQ to provide the exact model or specification, quantity, delivery destination, required date and supporting documents needed.