In January 2023, Caltech's Space Solar Power Demonstrator (SSPD-1) launched into orbit, marking a significant milestone in space-based solar power research. The SSPD-1 successfully transmitted solar energy from space to Earth, demonstrating the feasibility of wireless power transfer in space. This achievement is a crucial step toward developing space-based solar power systems that could provide continuous, zero-emission energy by capturing sunlight in orbit and beaming it back to Earth. irvinestandard.com
However, a NASA study released in January 2024 presents a more cautious outlook. The report indicates that while space-based solar power systems could be operational by 2050, they may be significantly more expensive than terrestrial renewable energy sources. The study suggests that the lifecycle costs of space-based systems could be 12 to 80 times higher than those of ground-based alternatives. Despite these challenges, the report acknowledges that advancements in technology and reductions in launch costs could make space-based solar power more competitive in the future. nasa.gov