Price of electricity in Finland peaks at 2.35€/kWh today. Keeping my tiny granny cottage warm costs me over 50 euros for a single day. It's negative 25C (-13F) outside.
That massive spike of 50c/kWh at the left looks tiny compared to today even though that's already insanely expensive
Saves a pretty penny on refrigerating stuff but makes for a hard time to have a decent night of sleep.
And your remark on styrofoam hits hard with me.
I have an old house, nearly 100 years old, with a very poor score in thermal efficiency, that really needs some improvement but the idea of glueing highly combustible materials to the walls does not go well with me.