Is there any significant progress done in heat pump technology? I am not really following but from superficial impression there are only very small incremental improvements being done.

(writing from Sweden where residential geothermal heat pumps were installed more than 20 years ago even in our cold climate)

It is so good to see progress in these areas. They are so fundamental that we do not think about them (fundamental in the sense that we just assume they are there) a lot. I have some infos on heat-pumps but do you have a good source about the state of smart-grid?