This dataset supports the article entitled "Exploring ARM mbed Support for Transient Computing in Energy Harvesting IoT Systems" accepted for publication in the 7th IEEE International Workshop on Advances in Sensors and Interfaces, 2017. Data Supporting Figures: Fig. 1. Experimentally obtained power outputs from photovoltaic (PV) cells located outdoor in three different sites. Fig. 8. Time and power consumption for hibernating the system state with Flash memory including erasing. Fig. 9. Demonstration of Hibernus on the mbed NXP platform. Date of data collection: january 2017 - April 2017 Information about geographic location of data collection: University of Southampton, U.K. Date that the file was created: May 2017