Current nuclear power generators are approximately half the weight of solar panels per watt of energy supplied, at terrestrial distances from the Sun. Chemical power generators are not used due to the far lower total available energy. Beamed power to the spacecraft is considered to have potential, according to NASA and the University of Colorado Boulder.
current nuclear power generators are approximately half the weight of solar panels per watt of energy supplied at terrestrial distances from the sun chemical power generators are not used due to the far lower total available energy beamed power to the spacecraft is considered to have potential according to nasa and the university of colorado boulder