Here you are, intentionally avoiding the point again - which is that electrical energy will not get us to off-planet resources and colony sites. The fuel/energy source that we currently have, and which will move us most quickly towards the fuel/energy sources we will need in the future, is fossil fuels, whether applied to the production of materials (plastics, metals, etc.) or as an efficient power source for transportation, heating, food production, etc. etc. etc. There are no pending advances in the application of electrical energy that I am aware of to adapt to applications powerful enough to travel off planet. As such, it is a dead end. We need to focus on NEW energy sources, unless you share the nihiist philosophy of Insidious Von, in which case no productive discussion of the future is possible.
You're advocating to remove the best tools out of mankind's toolbox.