Where did you read this? What I read is that Fortum was considering extending to 2050 as early as 2018 and finalized those plans 2 years ago. I read nothing that indicates the survival of this plant is dependent on this Google deal.
https://en.wikipedia.org/wiki/Loviisa_Nuclear_Power_Plant
https://news.ycombinator.com/item?id=49652346
https://news.ycombinator.com/item?id=49652346