It’s a recent development, and not by a huge amount, but it has been big new here since the so-called Karlshamn Power Plant (oil fired), generally reserved for shoring up the electricity supply during shortages returned into commercial service during the summer of 2020 due to the owning company determining it to be profitable (something which hadn’t happened in decades and as such made national headlines). Since then it has been active increasingly often. It is currently the only active fossil-fuel powered plant in the country AFAIK.
(Articles in Swedish, feel free to use a translator, or ask me to get it translated for you if you have trouble.)