Power in Monaco - Prince Albert II Monaco has inaugurated the new high voltage power station in Monaco. 30 million euros has been invested to support the economic development of the Principality over the next 3 decades. While the expansion project on the sea began on the side of the port, the Principality has just completed another fundamental project for its development in the years to come: that of its power supply. 63,000 volts from France are to be redistributed to half of Monegasque residents and industries. To do this, 15 kilometers of cables had to be pulled from Nice, including through old railway tunnels.