The energy transition is well underway in most European countries. It has a
growing impact on electric power systems as it dramatically modifies the way
electricity is produced. To ensure a safe and smooth transition towards a
pan-European electricity production dominated by renewable sources, it is of
paramount importance to anticipate how production dispatches will evolve, to
understand how increased fluctuations in power generations can be absorbed at
the pan-European level and to evaluate where the resulting changes in power
flows will require significant grid upgrades. To address these issues, we
construct an aggregated model of the pan-European transmission network which we
couple to an optimized, few-parameter dispatch algorithm to obtain time- and
geographically-resolved production profiles. We demonstrate the validity of our
dispatch algorithm by reproducing historical production time series for all
power productions in fifteen different European countries. Having calibrated
our model in this way, we investigate future production profiles at later
stages of the energy transition - determined by planned future production
capacities - and the resulting interregional power flows. We find that large
power fluctuations from increasing penetrations of renewable sources can be
absorbed at the pan-European level via significantly increased electricity
exchanges between different countries. We identify where these increased
exchanges will require additional power transfer capacities. We finally
introduce a physically-based economic indicator which allows to predict future
financial conditions in the electricity market. We anticipate new economic
opportunities for dam hydroelectricity and pumped-storage plants.Comment: 6 pages, 8 figure