When wind power is spoken of in the US, it is as a source of unreliable auxiliary power that supplies a small fraction of the total energy needs. Hence I had always viewed it as a fringe source of power that did not have the long term potential of solar power as an alternative to fossil fuels.
So this report that says that Denmark uses wind power to get more than 100% of its total needs took me by surprise. It is true that it was for just one day, a Sunday evening when the power consumption is relatively low, but still that is impressive. But Denmark is rapidly approaching a time when wind power will be able to meet even peak power consumption needs on weekdays.
We clearly see why Denmark has a more ambitious target for its energy transition – 100 percent renewable energy by 2050, compared to “at least” 60 percent renewable energy in Germany by the same year. The Danes have loads of relatively inexpensive wind power, and they plan to store the excess partly as heat simply by running electric heating systems when power is cheap. Eventually, it could also be stored chemically, such as via electrolysis to produce green hydrogen.
One thing that I have wondered about is what effect the large-scale use of wind energy would have on climate. If you are sucking a lot of energy out of the wind, it must have some side effect on other things like wind currents and flow patterns. It may be that the net extraction is small compared to the total amount of energy present in the wind and so has negligible effects.