Looking for long-term power price scenarios or forecasts

Hi there!

I am looking for electricity price forecasts for the following countries: Italy, France, Germany, ideally from the same source so they are based on the same assumptions or input. I am interested in day-ahead or spot prices, annual averages, up to at least 2030/2035. Can be forecasts or scenarios.

I will be using them as input for my own simulations. I have been looking aroudn online but could not find a good source, so I am asking here now, maybe someone knows a suitable source? It would be much appreciated!