I check sahko.tk in the evenings to see if it’s going to be particularly expensive the next day. This is mostly in the winter time, at summer I hardly pay any attention to it. They usually warn people in the news too for the handful of really expensive days in a year. Depending how high it gets I might turn off the heating for the peak hours but generally not because it doesn’t really make that of a big difference as the prices average out over a long period of time. Some people have automatic thermostats that turn off the heating after the electricity price passes a certain limit. My water heater for example is set to go on during the night when electricity is at its cheapest.