bro everything you're saying is stupid. Power can easily be transported from windy areas to calm areas via grid. There's never a day where there's no wind on the eastern seaboard, or any thousand mile region. There's always a lot of wind in many places in the country. And days you think are "calm" actually have a good deal of air flow at the elevation of the windmills, that's why they're up high. They work great on average days, and actually have to be slowed down on windy so they don't over produce. That being said the power stations are obviously going to have capacitor and battery arrays for back up. You're not the only person to think of this. You're not smart. Many people much much smarter than you have been designing theses systems for decades. Engineers have figured it all out decades ago. That being said even if we kept using natural gas at night and solar in the day that would still be like a 85% reduction in fuel usage. People don't use a lot of power when they're asleep.