All energy consumers in Austria need two partners to get their energy flowing: an energy supplier (for electricity or gas) and a system operator.
You can freely choose who should supply your energy. The supplier purchases for its customers or generates it in its own power plants. The rates offered vary among suppliers. Price comparisons really pay off!
Your system operator is responsible for operating and maintaining the grid as well as all services regarding your meter, e.g. installation, maintenance and meter reading. It is not possible to choose a different network operator; who your system operator is solely depends on where you live.