Vast increase in power density to 1 kWe/kg level or higher by NPEAC would represent a revolution in energy generation for deep space exploration and other terrestrial applications. Many devices and systems can all be powered with NPEAC technology for several years without refueling. Taken to full commercialization, NPEAC will eliminate the need for fossil fuels, solidifying and advancing the economic, military, and scientific supremacy of the United States. For FY17, if the test with 320 keV x-ray source is successful in a vacuum chamber, the efforts will proceed to using radio-isotope elements as gamma ray source for building an independent NPEAC prototype. The technology will benefit deep space exploration and humans to Mars goals.