The evolution of CO2 intensity of electricity generation in Europe can be seen here: https://www.eea.europa.eu/data-and-maps/indicators/overview-...
The picture of Europe is unlikely to change much. The predictions I hear is of an increase in construction of both renewables and fossil fueled power plants, and a more unstable price curve depending on weather. A lot of brown-orange that occasionally turn green when the wind is strong and quite dark when it isn't. In theory this should produce the cheapest energy, through I can't say that has been my experience so far. Relying on more energy trading depending on where energy is being produced at the moment seem to also increase transport costs, which for the end user here can be around 50% of the total price.