Leftover food will spoil if it's not stored in a refrigerator, and discarding spoiled food is a waste. Similarly, if the electricity generated from natural resources is not stored when there is excess, it will be wasted as well. Additionally, without a "refrigerator" (storage), one would have to go to the market to buy ingredients whenever needed, which can be inconvenient. Even worse, if the market is closed or out of stock, one might face the embarrassment of going hungry.

Now, for energy storage, what type of energy should we prioritize? Currently, China's energy production still relies heavily on coal-fired power generation, which consumes large amounts of energy and causes significant pollution. However, renewable energy sources like wind, solar, and water consume less energy and produce less pollution.

Q: Why do we still rely on coal-fired power generation? Is it because we lack wind, solar, and water resources?

A: Absolutely not!

Compared to coal-fired power, renewable energy sources like wind, solar, and water are dependent on natural conditions, making them intermittent and unstable. There may be times when these resources are not available when needed, or there may be excess when they are not required.