One of the most advantageous installation features of PV modules is coverage on curved surfaces, and PV modules that incorporate flexible and thin-film solar cells, including thin-film Si 6, CIGS 7, CdTe 8, perovskite 9, 10, and III–V compounds 11, 12, could be suitable candidates. To realize the aforementioned 2040 scenario, further diversification of PV applications-specifically, overcoming the limitations of the installation features-is becoming increasingly important. Si modules, which accounted for ~90% of all commercially available PV modules produced in 2013 5, have been primarily installed on flat roofs of residential buildings and on vast expanses of land, often referred to as mega-solar power plants. The highest recorded power conversion efficiency of crystalline silicon (Si) solar cells, which have been the most predominant PV technology for decades, is 26.7% 3, and this record efficiency is very close to the theoretical efficiency limit, which is 29.4% 4. Thus, this module design enables high areal coverage on 3D curved surfaces, while generating a higher electricity yield in a limited installation area.Īccording to a recently reported scenario regarding the growth of the photovoltaic (PV) market, it is projected that the global cumulative installed PV capacity will be 40 TW by 2040 1, even though it is presently below 1 TW 2. When perfectly fitted on a 3D curved surface with a sharp curvature, the prototype module achieves an outdoor power conversion efficiency of 15.4% and the daily generated electricity yield improves to a maximum of 190% relative to a non-concentration stretchable photovoltaic module. Herein, we present a stretchable micro-scale concentrator photovoltaic module with a geometrical concentration ratio of 3.5×. However, owing to their rigidity, existing thin-film solar cells based predominantly on silicon, compound semiconductors, and perovskites are difficult to apply to 3D curved surfaces, which are potential real-world candidates. Development of stretchable photovoltaics are crucial to achieve rapid growth of the future photovoltaic market. Stretchable photovoltaics are emerging power sources for collapsible electronics, biomedical devices, and buildings and vehicles with curved surfaces.