The Sun outputs the energy equivalent of over 4 million tons of matter every second. The same as the energy of over a billion hydrogen bombs every second.
Only a tiny amount reaches the Earth, and we use only a tiny amount of that. But if we could capture even a small percentage of the total energy of the Sun we could produce antimatter by the ton.
I always liked the star gate universe (?) series where the ships skimmed the stars they passed to charge up. We’ve essentially got a bunch of EV chargers dotted around the universe, although galaxy to galaxy might have some range anxiety.
Only a tiny amount reaches the Earth, and we use only a tiny amount of that. But if we could capture even a small percentage of the total energy of the Sun we could produce antimatter by the ton.