Flexible portable devices, also known as FlexPVs, have great potential in multiple applications, for example wearable technology, intelligent fabrics, curved surfaces such as car roofs or lightweight applications such as drones or aerospace transportation. In recent years FlexPVs have made great strides in efficiency, and are now able to generate levels of power very close to those of rigid solar panels. However, the lack of a standardized protocol regarding their stability and mechanical performance makes it difficult to compare and evaluate their flexibility, durability and efficiency in real-life conditions, which in turn limits their design and development. Now, the Universitat Rovira i Virgili (URV) has led a team of 23 experts in photovoltaic energy and mechanical performance from 12 countries in designing a unified testing protocol so that flexible solar cells and panels can be evaluated in a more consistent manner.