This session provides a guide for determining available power in any lighting environment and choosing the right amount and type of solar for an application. The difference between Lux measurements and power available for the commercially available solar technologies (CIGS, GaAs, a-Si, c-Si, pc-Si) in various light sources (fluorescent, incandescent, LED) is discussed. Finally, a case study on the power budget for operating a bluetooth radio with connected sensors is given.