On Mars For Astronaut  Than Nuclear

Solar Power Is Better

A New study concludes

Solar power would be the superior option over nuclear for crewed Martian missions near the planet's equator

Researchers found that a 

six-person Red Planet mission could be sufficiently powered by photovoltaic systems, adding on to decades of research on the benefits of solar power

 As long as the crewed mission is 

located near the sun-rich Martian equator, the metrics of solar intensity and surface temperature would have the superior tradeoff to a nuclear fission system 

The model assumes that solar energy

 could be stored on site using a compressed hydrogen energy system (as hydrogen would likely be feasible to mine on the Martian surface, if needed).

The solar arrays would use electricity

The solar arrays would use electricity to split water molecules into oxygen and hydrogen, with the hydrogen being put into pressurized vessels for storage. The hydrogen would be electrified within fuel cells to produce power.

The researchers acknowledged

 that other technologies, such as water electrolysis to create hydrogen and hydrogen fuel cells, may also be used on Mars. 

SpaceX's  Capsule  Station With Crew-4 Astronauts

Arrives At Space