1976
Completion of the Romanian-Canadian feasibility study for the CANDU system in Romania

December 1978
Conclusion of the contracts between ROMENERGO and AECL for the acquisition of the license of the CANDU system, the design and procurement of equipment specific to the nuclear part of Unit 1

February 1981
Conclusion of the contracts of the Romanian foreign trade profile company of that time ROMENERGO with ANSALDO (Italy) and General Electric (USA) for the classical part of Unit 1

1982
Pouring of the first concrete for the Unit 1 reactor building

December 1985
Arrival on site and installation of the reactor vessel (Calandria) at Unit 1 of the Cernavoda NPP.

1989
Installation of fuel lines at Unit 1

December 1989
(Romanian Revolution) – the completion stage of Unit 1 investment is 45%

July 1990
The first PRE-OSART mission at CNE Cernavoda of the International Atomic Energy Agency-IAEA from Vienna

August 1991
Conclusion of the management contract for the completion of Unit 1 with the AECL-ANSALDO Consortium (AAC)

May-June 1995
Nuclear fuel loading of Unit 1

April 16, 1996
The first criticality of Unit 1’s reactor

July 11, 1996
First connection to the national power system of Unit 1 CNE Cernavoda

December 2, 1996
Entering into commercial operation of Unit 1 CNE Cernavoda

June 30, 1997
The full transfer of the management and exploitation responsibilities of Unit 1 from AAC to the Romanian staff

2 July 1998
Establishment of the National Company „Nuclearelectrica” ​​SA (Hg no. 365/1998; Mof no. 246/03.07.1998)

May 18, 2001

Signing of the contract with AECL Canada and Ansaldo Nucleare for Unit 2

December 2002
February 2003 – Canadian, Italian, French and American lending commitments were signed with Societe Generale, Credit Lyonnais and the Romanian Development Bank.

March 24, 2003
Entry into force of the Contract for Completion and Commissioning of Unit 2 at CNE Cernavoda, signed by SNN, AECL and ANSALDO

March 30, 2003
The EURATOM loan, approved by the EC, is subject to streamlining through the implementation of a well-defined package of improvements.

September 21, 2004
Start of the production of nuclear fuel necessary for the first loading of the Unit 2 reactor

September 15, 2005
Fuel bundle number 50,000

December 2005
The transfer process of Unit 2 systems was completed, with a total of 154 systems successfully transferred to the commissioning team.

July 2006
Completion of the pressure test of the primary circuit of the Unit 2 reactor

September 2006
Heavy water loading in the moderator circuit of Unit 2

December 2, 2006
Anniversary of 10 years of operation of Unit 1 from CNE Cernavoda

February 15, 2007
01:29 hours, the introduction of the first nuclear fuel beam into the active zone of the Unit 2 reactor at the Cernavoda NPP

February 22, 2007
At 1:30, the loading of the reactor with nuclear fuel was completed.

March 2, 2007
Loading of heavy water in the reactor cooling circuit

May 6, 2007
at 11:25 p.m. the initiation of the chain fission reaction (criticality) took place at Unit 2

August 7, 2007
at 17:21 the first parallel of Unit 2 with the national energy system was achieved, at 25% of the nominal power of 700 MWe

September 12, 2007
Unit 2 reactor at CNE Cernavoda reached nominal power for the first time, during commissioning tests

September 26, 2007
Operation for 10 days at nominal power

September 28, 2007
Handing over the management of Unit 2 to SN Nuclearelectrica SA

October 5, 2007
Official inauguration of Unit 2

July 2, 2008

The anniversary of 10 years of activity, since the establishment of SNN SA

March 25, 2009

Registration of the project company SC EnergoNuclear SA, which will be responsible for the construction of Units 3 and 4 at CNE Cernavoda

November 2010

Obtaining the favorable opinion of the European Commission for the project of Units 3&4, based on the Euratom treaty.

November 29, 2011

15 years of commercial operation of Unit 1 from the Cernavoda nuclear power plant

November 2013

SNN listing on the Bucharest Stock Exchange

November 9, 2015

Signing of the Memorandum of Understanding regarding the development, construction, operation and decommissioning of Units 3 and 4 from CNE Cernavoda with China General Nuclear Power Corporation

May 8, 2019

Signing of the SNN-CGN Investor Agreement in preliminary form

June 12, 2020

Approval in the SNN AGM of the termination of negotiations with CGN

September 21, 2020

Starting from 21.09.2020, SNN was included in the indices of the global index provider FTSE Russell in the context of the transition of the Romanian capital market from the status of Frontier Market to the status of Secondary Emerging Market.

October 9, 2020

Romania and the United States of America have initialed an extensive intergovernmental agreement that allows cooperation in areas of importance for Romania, such as the project of Units 3 and 4 of the Cernavodă Nuclear Power Plant, the re-engineering of Unit 1, as well as cooperation on various levels in the civil nuclear field in Romania.