Which component is essential in concentrated solar power systems?

Concentrated solar power (CSP) systems rely fundamentally on mirrors or reflectors to harness sunlight. These systems use large mirrors to focus sunlight onto a small area, producing high temperatures. This concentrated heat is then used to generate steam, which drives a turbine to produce electricity. The efficiency of CSP systems is significantly enhanced by the ability of mirrors to concentrate solar energy, enabling them to operate even when direct sunlight is not available, provided there is enough thermal storage.

Wind turbines and photovoltaic cells are different types of renewable energy technologies that convert wind energy and direct sunlight into electricity, respectively, but they do not play a role in CSP systems. Inertia is a concept related to the physical properties of motion and energy, which is not directly relevant to the specific mechanics of concentrating solar power. Thus, mirrors or reflectors are a crucial component in the functioning and efficiency of CSP systems.