NASA's Space Solar Program Focuses On Cutting Costs

The article discusses recent developments and challenges in NASA’s space solar power efforts, particularly focusing on cost reduction and technological advancement. While space-based solar power—beaming solar energy from orbit to Earth for continuous, weather-independent clean energy—has gained interest globally, including from private investors and countries like China, NASA itself remains cautious. In April 2024, NASA’s Office of Technology, Policy, and Strategy (OTPS) indicated that space-to-Earth solar power transmission does not currently meet the agency’s investment criteria. However, NASA is actively advancing related distributed space solar power technologies, especially space-to-space power beaming systems, which could eventually inform space-to-Earth applications. Significant progress is being made through partnerships with private companies such as Ascent Solar Technologies, which in mid-2024 entered a collaborative agreement with NASA’s Marshall Space Flight Center to develop commercial products for distributed space power infrastructure. Ascent’s technology, including commercial-off-the-shelf CIGS solar cells, has demonstrated