Electrical cars with "smart" chargers. The chargers will have two settings. Express (high price, uninterrupted charging), and Economy (low price, maybe even fre

Electrical cars with "smart" chargers. The chargers will have two settings. Express (high price, uninterrupted charging), and Economy (low price, maybe even free (fixed cost), charging controlled by the power grid, "full by the next morning"). This is has been the dream/vision of the power companies in Denmark for at least a decade. It is usually brought up when the government pressure them to generate more power from wind. Current level is 20%, goal is 50% by 2020. Even 20% is more than is practical in isolation, but we export peak production to Germany, Norway, and Sweden. The two later have hydropower production (and no earthquakes), which can be lowered when cheap Danish excess wind power is available. Not sure that can be scaled to 50%, especially as Germany has similar plans.