This paper examines the intricate dynamics of droplet impact on coplanar reverse electrowetting systems (CREW), specifically exploring how the electrode ratio and bias voltage interact to affect voltage generation. Employing a systematic experimental approach, we varied the electrode ratio and bias voltage to analyze their effects on the generated voltage during droplet impact. Our findings reveal significant dependencies between these parameters and the voltage output, shedding light on the underlying mechanisms governing energy harvesting efficiency in CREW systems. This research can inform better design strategies for improving energy conversion efficiency in various applications.