随着全球能源结构加速向清洁化、低碳化转型，太空光伏（Space-Based Solar Power, SBSP）这一前沿技术正从科幻走向现实，万亿级新赛道悄然启幕。与地面光伏受昼夜、天气和地理限制不同，太空光伏可实现24小时不间断发电，并通过微波或激光将能量高效传输回地球，具备极高的能量密度和稳定性。近年来，中国、美国、日本、欧洲等纷纷加大投入：中国提出“逐日工程”，计划在2030年前开展关键技术验证；美国NASA与国防部推动多项SBSP项目；日本则聚焦无线能量传输实验。然而，该产业仍面临发射成本高、技术集成复杂、轨道安全与国际法规等多重挑战。当前，围绕核心材料、高效光电转换、轻量化结构、能量无线传输等环节的产业博弈已全面升温。业内专家指出，谁能在未来5–10年突破关键技术并构建低成本发射体系，谁就将主导这一战略新兴产业的全球格局。太空光伏不仅是能源革命的新引擎，更可能重塑未来大国科技与能源话语权。
As the global energy mix rapidly shifts toward cleaner and low-carbon sources, space-based solar power (SBSP)—once confined to science fiction—is emerging as a trillion-dollar frontier. Unlike terrestrial solar power, which is limited by day-night cycles, weather, and geography, SBSP can generate electricity continuously in orbit and beam it back to Earth via microwaves or lasers, offering high energy density and stability. Major players are accelerating investments: China has launched its ‘Project Zhu Ri’ aiming for key technology validation by 2030; the U.S. NASA and Department of Defense are advancing multiple SBSP initiatives; and Japan is focusing on wireless power transmission experiments. However, significant hurdles remain, including high launch costs, technical integration complexity, orbital safety, and international regulatory frameworks. Competition is intensifying across critical domains such as advanced materials, high-efficiency photovoltaics, lightweight structures, and wireless energy transfer. Experts warn that whichever nation or consortium achieves breakthroughs in core technologies and establishes a low-cost launch infrastructure within the next 5–10 years will likely dominate this strategic emerging industry. SBSP is not just a new engine for the energy revolution—it could also reshape the global balance of technological and energy influence among major powers.
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