TVO

From Nuclear Heritage
Jump to: navigation, search

This text is based on corporation information of TVO:

Teollisuuden Voima Oyj (TVO) is a public company established in 1969 producing electricity for its shareholders at cost price. TVO's nuclear power plant produces about one sixth of the electricity used in Finland. Electricity is generated at the two Olkiluoto nuclear power plant units Olkiluoto 1 and Olkiluoto 2 (OL1 and OL2) at Eurajoki and at the Meri-Pori coal-fired power plant in Pori. A new unit, Olkiluoto 3 (OL3), is under construction at Olkiluoto. TVO has filed an application for a decision-in-principle to construct a fourth nuclear power plant unit at Olkiluoto in spring 2008.[1]

The main mission of TVO is to produce electricity for shareholders safely and economically without carbon dioxide emissions. TVO's vision is to be a world-class nuclear power company that is appreciated by Finnish society. Values of the company are responsibility, transparency, pro activity and continuous improvement.[1]

The Olkiluoto nuclear power plant produced ca. 14.5 TWh electricity in 2009. It was about one sixth of all electricity used in Finland.[1]

TVO's generating capacity consists of the Olkiluoto nuclear power plant units Olkiluoto 1 and Olkiluoto 2 with an electrical output of 860 MW each and the 257 MW share in the Meri-Pori coal-fired power plant.[1]

Company shareholders and holdings December 31, 2009[1]
Holding A series B series C series Total
EVP Energia Oy 6.5 6.6 6.5 6.5
Fortum Power and Heat Oy 26.6 25.0 26.6 25.9
Karhu Voima Oyj 0.1 0.1 0.1 0.1
Kemira Oyj 1.9 - 1.9 1.1
Oy Mankala Ab 8.1 8.1 81. 8.1
Pohjolan Voima Oy 56.8 60.2 56.8 58.3

The A series shares entitle the shareholders to the electricity generated by the current plant units, the B series shares to the electricity by the new plant unit OL3, and the C series shares to the electricity generated by the Meri-Pori coal-fired power plant.[1]

Some historic key points:[1]

  • 23.1.1969: Teollisuuden Voima Oy was founded by 16 companies
  • 21.12.1972: The Ministry of Trade and Industry gave principle approval for building a nuclear power plant.
  • 1973: The Parliament approved TVO's proposal of acquisition of an area at Olkiluoto.
  • 31.1.1974: The Ministry of Trade and Industry granted construction license for Olkiluoto 1 (OL1) in accordance with the Atomic Energy Act.
  • 1.2.1974: OL1's foundation stone was laid.
  • 4.8.1975: The Ministry of Trade and Industry granted construction license for Olkiluoto 2 (OL2) in accordance with the Atomic Energy Act.
  • 28.8.1975: Construction of OL2 unit was started.[2]
  • 6.7.1978: The Council of State granted an operation licence for OL1.
  • 2.9.1978: OL1 was connected to the national grid for the first time. The power plant unit achieved full capacity for the first time in January 8, 1979.
  • 1.9.1979: The Council of Stae granted an operation licence for OL2.
  • 10.10.1979: OL1 was introduced into commercial operation.
  • 18.2.1980: OL2 was connected to the national grid for the first time. The power plant unit achieved full capacity for the first time in November 11, 1980.
  • 1.7.1982: OL2 was introduced into commercial operation.
  • 17.5.1984: The Council of State granted permission for increased power level for both power plant units.
  • 29.9.1987: Spent fuel was transferred for the first time from the plant to the Interim Storage Facility for Spent Fuel (KPA-Store).
  • 29.3.1988: Agreement on the participation with a 45 per cent share in the Meri-Pori coal-fired power plant project was signed.
  • 15.12.1988: The Council of State granted an operation licence for 10 years for both power plant units.
  • 29.9.1989: Total production of Olkiluoto nuclear power plant reached 100 TWh.
  • 16.3.1990: Training simulator was taken into use at Olkiluoto.
  • 8.5.1992: The first waste transfer to the low and medium-level nuclear waste repository (VLJ) was made.
  • 30.12.1992: Olkiluoto, Konginkangas and Kuhmo were chosen for more detailed site investigations for final disposal site for spent nuclear fuel.
  • 26.9.1993: Meri-Pori coal-fired power plant produced electricity to the national grid for the first time.
  • 1.1.1996: Posiva Oy began its activities.
  • 1998: Total production of Olkiluoto nuclear power plant reached 200 TWh.
  • 20.8.1998: The Council of State granted a new operation licence for both power plant units and the KPA-Store as well as for the low and medium-level waste interim storages.
  • 1998: Modernization programme of the power plant units, which lasted four years, was completed. After the modernization, the power level is 840 MW it is 18.3 per cent higher than the earlier nominal power level.
  • 30.8.1999: The environmental impact assessment report, i.e. EIA Report, of the environmental impact of a new nuclear power plant unit, which would possibly be built at Olkiluoto, was submitted to the Ministry of Trade and Industry.
  • 5.12.1999: A certificate based on the ISO 14001 standard was granted to the Olkiluoto nuclear power plant.
  • 15.11.2000: Application for Decision in principle concerning the new nuclear power plant unit was submitted to the Council of State.
  • 21.12.2000: The Council of State gave a positive Decision in principle for Posiva Oy's application for the construction of a final repository of spent nuclear fuel at Olkiluoto, Eurajoki.
  • 18.5.2001: The Finnish Parliament ratified the Decision in principle made by the Council of State supporting Posiva Oy to construct a final repository for spent nuclear fuel at Olkiluoto in Eurajoki.
  • 19.7.2001: The Finnish Environment Institute registered TVO in the EMAS system (Eco Management and Audit Scheme).
  • 24.5.2002: The Finnish Parliament ratified the Decision in principle made 17th January 2002 by the Council of State supporting the construction of a new nuclear power plant unit either in Olkiluoto, Eurajoki or at Hästholmen, Lovisa.
  • 30.09.2002: TVO submitted bid inquiries for the construction of a new nuclear power plant unit.
  • 16.10.2003: Olkiluoto was chosen for the location site for the new power plant unit.
  • 18.12.2003: TVO's Board of Directors decided to invest in the new nuclear power plant unit Olkiluoto 3 (OL3). The Company signed a contract for the construction of a pressurized water reactor plant unit of some 1,600 MW with the consortium comprising AREVA NP GmbH, AREVA NP SAS and Siemens AG.
  • 16.2.2004: The excavation work at the OL3 site was started.
  • 15.11.2004: TVO's wind power unit at Olkiluoto was consecrated.
  • 10.12.2004: The festive tarring of the ground of the OL3 site.
  • 11.1.2005: The building permit for OL3 was granted by Eurajoki municipality.
  • 17.2.2005: The Council of State granted the construction licence for the OL3.
  • 26.4.2005: Total electricity production of OL1 and OL2 reached 200 TWh.
  • 12.8.2005: The actual construction work of OL3 began.
  • 12.9.2005: The OL3 foundation stone was laid.
  • 31.1.2006: Olkiluoto's new Visitor Center was consecrated.
  • 1.6.2006: Modernization programme of the Olkiluoto power plant units was completed. After the modernization the nominal power level is 860 MW.
  • 18.10.2006: OL3's actual casting of concrete began.
  • 31.5.2007: The environmental impact assessment programme (EIA programme) for the fourth nuclear power plant unit to be possibly built at Olkiluoto was submitted to the contact authority, the Ministry of Trade and Industry.
  • 19.11.2007: The Olkiluoto 100 MW gas turbine plant jointly constructed by Fingrid Oyi and Teollisuuden Voima Oy (TVO) was inaugurated.
  • 31.12.2007: TVO has been registered in the trade register as a public company as of 31 December 2007. The official name of the company is Teollisuuden Voima Oyi.
  • 25.4.2008: TVO filed to the Government an application for a decision-in-principal to construct a fourth nuclear power plant unit (OL4) at Olkiluoto. Simultaneously Posiva Oy filed an application-in-principle to expand its for spent fuel for OL4.
  • 2.9.2008: The anniversary of 30 years of nuclear energy production at Olkiluoto took place. During the three decades Olkiluoto has produced 350 TWh of electricity.
  • May 2009: The Association for Finnish Work awarded the Key Flag, a symbol of Finnish know-how, to electricity generated by TVO.
  • 11.11.2009: Olkiluoto 3 site reached rooftop height.
  • 2009: The production of electricity of the Olkiluoto nuclear power plant in 2009 was the highest in the history of the operational history. The total annual production of the power plant units was 14.5 TWh. The two units produce annually some sixth of the electricity in Finland.


  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 TVO: Pocket Guide 2010; Eura Print Oy, 2010
  2. This data is in contradiction to the data provided by the International Atomic Energy Agency: according to them, the construction started on 01/11/1975 - http://www.iaea.org/PRIS/CountryStatistics/ReactorDetails.aspx?current=160 as at September 25, 2012

Personal tools
Emergency Alert