Why does 60% of coal's energy vanish before reaching your wall outlet?

Why does 60% of coal's energy vanish before reaching your wall outlet?

All that intense heat from burning coal has one simple job: boil water. Inside a massive boiler, water absorbs this thermal energy and flashes into high-pressure steam.

This steam isn't just hot; it's a tightly coiled spring of pressure. It blasts into a turbine, forcing thousands of metal blades to spin at blinding speeds.

In an instant, the chaotic thermal energy of the steam is transformed into pure, organized rotational kinetic energy, driving a heavy steel shaft.