"The main contractor, Areva, is building the unit for a fixed price of €3 billion, so in principle, any construction costs above that price fall on Areva. In July 2012, those overruns were estimated at more than €2 billion, and in December 2012, Areva estimated that the full cost of building the reactor would be about €8.5 billion, well over the previous estimate of €6.4 billion."
France and Germany jointly developed the European Pressurised Reactor (EBR). In France, development was led by Framatome and EDF, and in Germany by Siemens.
There are currently 3 nuclear plants under construction (or almost ready for operation) using EBR in Europe - they are in France, Finland and the UK.
Unfortunately, all three plants are over-budget and over-schedule.
The UK plant (Hinkley Point C) is expected to provide 7% of the UK's electricity when it is operational in 2026. It is designed to run for at least 60 years. (Source: https://www.bbc.co.uk/news/uk-england-somerset-58724732)
https://ehss.energy.gov/SESA/Files/corporatesafety/safety_bu... On April 20, 2005, a camera inspection of a feed clarification cell at THORP revealed that 83,000 liters of dissolver solution had leaked from a broken pipe (Figure 1) into the cell sump. The highly radioactive dissolver solution, consisting of approximately 19 metric tons of uranium, plutonium and fission products dissolved in nitric acid, was entirely contained within the stainless steel-lined cell. No personnel were injured as a result of this incident. However, the cleanup costs for this event are expected to exceed $500 million, and the THORP facility faces a lengthy shutdown (possibly even permanent closure).
France: https://www.scientificamerican.com/article/is-reprocessing-t... Reprocessing also results in radioactive liquid waste: the French reprocessing plant in La Hague discharges 100 million liters of liquid waste (pdf) into the English Channel each year. "They have polluted the ocean all the way to the Arctic," Makhijani says. "Eleven western European countries have asked them to stop reprocessing."
Germany: https://www.nwtrb.gov/docs/default-source/meetings/2018/marc... Since 1991* increasing inflow of brine from the Southern flank Since 1994* reports on contaminated brines (3H, 137Cs)