[TheSpiceIsLife]

You can say that about any waste heat.

In really, it’s not convenient to move all waste heat to where it’s more needed.

[m4rtink]

Modern industrial scale insulated hot water district heating systems can do dozens of kilometers with the water cooling down only by a degree Celsius.

[tremon]

It's always more convenient to ignore externalities. That doesn't mean we should be okay with only bottom-of-the-barrel solutions.