Plans are underway to replace the RBMK-reactors with four new reactors of the VVER-1200 type, with the plant identification "Leningrad II". On 25 October 2008, Saint Petersburg Atomenergoproekt began concreting the foundation plate of the reactor building of the Leningrad Nuclear Power Plant II, Unit 1. Cost of the project was estimated to be almost 70 billion Russian ruble (RUR) (about $3 billion in US dollars).[1][2] A construction licence was issued on 22 July 2009.[3] In October 2018 Leningrad II-1 started commercial operation, and Leningrad II-2 is scheduled for start of commercial operation during 2020.