Design of a laboratory scale wave energy converter (WEC) system based on planar double-sided permanent magnet linear generator (PMLG) is considered in this paper. The detail procedure in designing the PMLG is reported including analytical work and experimental testing. The main objective is to create a simple and easy procedure in the design and optimize the detailed parameters to achieve the aimed output voltage with the constraint of physical designs. The PMLG is incorporated with sensors, linear actuators, springs, and data monitoring devices to create a WEC system and conduct the experimental testing. The test is conducted to show the performance of the design procedure by comparing the output voltage between the design and measurement. The result shows that the output voltages are close. Additionally, another experiment is performed to check the conversion efficiency of the machine.