+A **power cycle** describes a series of [thermodynamic](/wiki/thermodynamic) processes that convert an input of heat energy into mechanical [Work](/wiki/work). These cyclical transformations are the core principle behind all heat engines, powering everything from vehicles to vast electricity grids.
+## See also
+- [Carnot Cycle](/wiki/carnot_cycle)
+- [Rankine Cycle](/wiki/rankine_cycle)
+- [Engine](/wiki/engine)
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