From NASA website:

“As NASA works to extend human exploration of the solar system, unprecedented capacity for energy distribution, management, and storage will be needed to support a sustained human presence and the beginning of industrial activity. NASA’s Watts on the Moon Challenge seeks solutions for energy distribution, management, and/or storage that address NASA technology gaps and can be further developed for space flight and future operation on the lunar surface. Not only could novel solutions make a difference in lunar and space exploration, but technologies discovered during this Centennial Challenge could help facilitate new power options on Earth.”  (NASA.gov)