Sensor-Cloud (SC) and power line communication (PLC) are attracting growing attention from both academia and industry, by 1) integrating wireless sensor networks and cloud computing and 2) utilizing the power grid infrastructure to perform data transmission, respectively. Aiming to be an enlightening guidance for research about SC and PLC, this paper first reviews SC and PLC, by presenting the recent developments about SC and PLC. Further, this paper explores SC and PLC, by envisioning the applications and advantages of the integration of SC and PLC. We hope our investigations can inspire more research about SC and PLC to make them develop faster and better.