Also the current price for the plant is 5.7 billion euros (in the last "official" statement from TVO). It might go up to 7 to 8 billion after the lawsuits etc. Basically the plant was built at fixed cost contract with the builders (Areva and Siemens) taking a huge hit but that is not TVOs problem.
The biggest investors in OL3 are paper companies more interested in some guaranteed max price than paying the least by getting as much of their electricity from their own production (the nuclear plants by TVO, their own hydro, etc). Basically they want to be able to say 1 year in advance that paper/paperboard will cost X without taking a huge hit when fulfilling their contracts due to electricity price jumping up. If they happen to find cheaper electricity from somewhere else then it is just a happy accident and more profit for them.
Basically OL3 got built as the investors were so happy with the previous 2 reactors at the site so I would think they know how to do it in a profitable way.
EDF has negotiated a guaranteed fixed price – a "strike price" – for electricity from Hinkley Point C of £92.50/MWh (in 2012 prices),[25][83] which will be adjusted (linked to inflation – £106/MWh by 2021[77]) during the construction period and over the subsequent 35 years tariff period. The base strike price could fall to £89.50/MWh if a new plant at Sizewell is also approved.[25][83] High consumer prices for energy will hit the poorest consumers hardest according to the Public Accounts Committee.[86]
In July 2016, the National Audit Office estimated that due to falling energy costs, the additional cost to consumers of 'future top-up payments under the proposed HPC CfD had increased from £6.1 billion in October 2013, when the strike price was agreed, to £29.7 billion'.[87][88] In July 2017, this estimate rose to £50 billion, or 'more than eight times the 2013 estimate'.[9]
https://en.wikipedia.org/wiki/Hinkley_Point_C_nuclear_power_...