In-Wall Thermoelectric Harvesting for Wireless Sensor Networks Topics: Ecological Monitoring, Analytics and Visualization; Embedded Sensor Networks; Energy Efficient Network Hardware; Energy Monitoring; Energy-Efficient Communication Protocols; Green Communications Architectures and Frameworks; Harvesting Energy with Customer Participation; Integrating Renewable Energy Sources into the Smart Cities Grid; Low Power Wireless Communication Technologies; Smart Sensor-Based Networks and Applications In Proceedings of the 3rd International Conference on Smart Grids and Green IT Systems SMARTGREENS - Volume 1, 213-221, 2014 , Barcelona, Spain