All energy inevitably changes into heat eventually, and in the steady state, power in = power out.

There is no way to get rid of heat. It has to go somewhere; otherwise, the temperature of the system will increase without bound.

For example, why couldn't you use the waste heat like a power plant? Use it to boil water, to turn turbines, to generate electricity, which gets sent and consumed elsewhere? Adding to the heat wherever the electricity is finally consumed. (Ignoring various losses along the way).