Space-based solar panels could enable solar power to be harvested continuously instead of only when sunlight reaches Earth, reducing Europe’s need for Earth-based wind and solar by 80%, finds a study publishing August 21 in the Cell Press journal Joule. Using energy models, researchers estimate that in 2050, space-based solar power could cut the total costs of Europe’s total grid system by 7%–15%. However, these numbers hinge upon the rapid development of two NASA-designed technologies in order to meet Europe’s goal to achieve net-zero by 2050.