Gabe is a big fan of alternative / renewable forms of energy. We’ve been able to see many examples of green energy sources during our time in Europe.
Windmills are very common, dotting the mountainous landscapes to take advantage of the wind energy.

Windmills in the Aosta valley of Italy
We also have seen several examples of cool solar energy in Europe:

Solar parking lot near Bordeaux, France – this was enormous. The panels both gathered energy and protected the cars from the elements

Solar powered parking machine in Vienna
Switzerland in particular makes excellent us of hydropower with its alpine streams and vertical topography. It produces over 50% of Switzerland’s energy.

Switzerland harnesses their natural treasures into energy
We both think it is pretty neat how Europeans invest in protecting their environment, with their concern for recycling, reduced packaging/disposable materials, and using combinations of green energy.