Pretty soon, heat pumps will be able to store and distribute heat as needed

>>PaulHo+(OP)
Perhaps I am missing something; this product already exists as the Sunamp Thermino.

>>chicke+jq1
It also exists, as described in the headline, as a tank of heated water.

The phase change stuff has positives like taking up less physical space but it's also a much less mature tech than storing hot water.

>>ZeroGr+ev1
You are right in your analogy.

Earth's oceans and seas act as giant heat sinks.

And that means more trouble as global climate change impacts..

zlacker