Not a rocket engineer, but it might actually be reasonable that MCT use batteries built in the Tesla Gigafactory for energy storage during the trip to Mars.
They would need a football sized field of solar panels just to generate the methane to return, as well as a team of people to keep them clean and operating.
The plan as it stands right now is solar, but nuclear needs to be on the table.
The plan as it stands right now is solar, but nuclear needs to be on the table.