Great Britain - Live electricity usage.

Our power generation systems are constantly working in conjunction to deal with demand and the current weather conditions.
The power stations themselves are also changing, with reducing numbers of coal power stations, new nuclear plants and growth in gas, wind, solar and biomass.
People who argue that wind turbines are terrible because sometime the wind doesn't blow are missing the point. Carbon is the driver of global warming, arguably the biggest threat to human existence. Any time the wind is blowing, less carbon is produced by other methods of generation. Also there's less localised air pollution.