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10-20 year horizon: Battery Technology. Manufacturing improvements, improving density and cooling requirements, recycling economy, etc. There's a huge race first-mover race that Japan has made a government-backed consortium tackling on batteries.

Most visible effect would be smartphones and laptop charging times and charging cycles.

For cars and work trucks: aside from cheaper cost, it'll also solve range anxiety and charging times.

For solar powered homes, you can opt to store cheaply in your home for night-use instead of sending excess back to the grid.

Lighter batteries on drones would have a multitude of uses from industrial to space exploration.

Longer time horizon: electric-powered flight and electric-powered freight. It will drop supply chain expenses on a macro perspective.