The solar infrared (IR) spectrum has crucial applications in electronic systems, such as reducing the weight and launch costs of satellite solar cells. However, its potential remains underutilised. The EU-funded POWERSAT project aims to develop a platform that captures energy from the IR spectrum and converts microwave spillover from satellite antennas into a DC power supply. This energy will power low-power embedded electronics within satellites and enable efficient inter-satellite communication links. The project will produce five demonstrators: one for solar energy harvesting and four for capturing microwave energy. The goal is to integrate these technologies into satellite electronic systems, replacing traditional solar cells and thereby reducing satellite weight and launch costs.