Some places rely on solar and wind energy right? To power their homes and such. How do they use energy in the night or when there is no wind? Do they have something that stores the energy like a big battery or something?

I have to “make” a green city and it will use renewable energy source including solar and wind energy. How would I make the wind and solar energy sustainable and not have shortages of power?

Transformers Toys

I was recently discussing with someone the possibility of the government installing a cap-and-trade system on American companies to reduce greenhouse gas emissions. I said that would be a baby step in the right direction, however I think we need a stricter solution, such as the development and eventually mandated uses of alternative energy (solar power, wind and tide energy, for example) instead. However, I was wondering if this is even applicable to the topic at hand? What processes exactly do happen within companies to emit so much greenhouse gas? And, could alternative energy even be substituted for the original methods of production?

Garden Hose Bib