Agreement locks in reliable energy supply for 10 years with portion of supply coming from reactor uprates Power company Constellation, which operates the largest fleet of commercial nuclear power plants in the US, has been awarded more than $1bn (€970m) in combined contracts by the US General Services Administration (GSA) to supply power to more than 13 government agencies. Under one of the contracts, which runs for 10-years and is worth $840m, the largest in GSA history, Constellation will supp...