Nature gives us an unlimited amount of free energy and certainly does not send us an account.

The scientific model of closed systems is only an intellectual simplification that has nothing to do with reality, as it neglects the external influences that affect the behavior of part of the observed system.

An example is a hydroelectric power plant. The water transfers the gravitational potential to the turbine. He will do the work and run. It then evaporates and returns to the beginning of the process. This is due to other external processes, which in this case we collectively refer to as weather.