Solar cell simulation power supply is an well-designed, compact, high performance, powerful and easy-to-operate DC programmable power supply with I-V simulation curve, which is responsive, controllable, repeatable, stable and accurate, with built-in SAS model for setting of Voc, Isc, Vmp and Imp parameters to generate and output I-V curve. Moreover, solar cell parameters or a series of 1024 points of V&I data can be edited via the PC software and then downloaded to the power supply, high-power, small size, fast transient response, low ripple, high precision, good performance, with standards reaching the international advanced level.