Watts on the Moon – Phase 2 is NASA’s completed lunar surface-power challenge project, run through the Prizes, Challenges, and Crowdsourcing program and led by Marshall Space Flight Center. Phase 2 (2022-02-23 to 2024-09-20) sought solutions for lunar energy distribution, management, and storage that can support Artemis surface operations and future industrial activity, building on Phase 1 and addressing sustainable power for long-duration lunar missions.