Improved electrical grids can be a major factor

There is nothing especially glamorous about an electrical grid, but when done right, the beneficial results can be surprising, especially for improving utilization of renewable energy, like wind and solar. For example, what an extensive electrical grid can do is move power from where the wind is blowing, to where the wind is not blowing, or to where the sun is not shining.

Europe is in the process of constructing a very extensive grid system as explained in The Deal: European Supergrid Sets High Expectations