What is heat storage?

Heat storage refers to the process of capturing and storing thermal energy for later use. This can be achieved using various materials and systems, such as water tanks, phase change materials, or molten salts, which absorb heat when it's available and release it when needed. Heat storage is commonly used in applications like renewable energy systems, where it helps balance supply and demand, enhancing efficiency and reliability. It plays a crucial role in optimizing energy use and reducing reliance on fossil fuels.