This is the entire reason why countries like China are investing hard into ultra-high-voltage transmission lines.
While regions like Xinjiang and Inner Mongolia have immense wind and solar potential, getting that electricity to the population centers is challenging.
Selling electricity to Eastern Europe, to Northern Africa, hell even to the Middle East is an option if Europe is truly operating an electricity surplus.
A supercapacitor is defined by low voltage but high potential for energy storage, as in high capacitance. It's energy per unit of mass is far greater than regular batteries. Therefor we have low voltage storage solutions and high voltage energy distribution across a grid, which results in the witicism of the above comment.
If potential meant voltage in every context then we wouldn't need the word voltage.