It may be several hundred years from now. But we will eventually do that. The use of alternate power, much like we have used in space, has been a topic of research for some number of years. So far, the only reason that great uses of solar power with special batteries has not been used on Earth is a cost tradeoff. To produce the amounts of power that we need, solar or wind power has all proved to be more costly than the use of standard power generation using fossil fuels or nuclear power.
Fossil fuels have a limit as to how much is available.
Some decades or centuries into the future, fossil fuels may not even be an option, so that solar, wind power etc. may be the only remaining option. I think the question is a good one, and the only reason those alternate power sources haven't been used in a bigger scale on earth is because it's just too costly. I think the approach that we used stretched the technology that was available in that day. It would be a little easier to go to the moon today because we have better, smaller things like computers and displays and scientific instruments. But I think the approach would be exactly the same.