You take renewable energy and make a high density gas. Typically you make hydrogen (easy) then methane. Methane, unlike hydrogen, is highly dense and can be sent with existing gas pipelines.
It's a way to store and trsnsport enormous excess energy usage thats far better than electrical butteries.
It's already in use, but further research would only make it more efficient.
That's awesome, I don't think I have heard of that. I'm going to look into that for sure, thanks for the quick explanation.
That reminds me of that idea of a solar panel farm that uses its excess energy to lift a boulder during the day and then during the night the boulder falls and turns alternators that create electricity from the weight of the boulder slowly falling back down overnight