Maybe. Since B5 was in orbit aroubd Epsilon 3, though, and it was fusion not fission, what are the odds that the smart builder relied on there being more hydrogen available than sunlight?
Having looked at the panels in question, it seems that you are right, thought. They LOOK like solar power panels... but then what do we know about how 25th Century heat diffUsers would look?
It seems simpler to ignore the whole solar panels/reactor fuel question, but it WOULD make the game much more interesting to have fuel supplies be large but limited.
That would especially be true for fighters....