2009 Brazil and Paraguay blackout
Encyclopedia
The 2009 Brazil and Paraguay blackout was a power outage
Power outage
A power outage is a short- or long-term loss of the electric power to an area.There are many causes of power failures in an electricity network...

 that occurred throughout much of Brazil
Brazil
Brazil , officially the Federative Republic of Brazil , is the largest country in South America. It is the world's fifth largest country, both by geographical area and by population with over 192 million people...

 and for a short time the entirety of Paraguay
Paraguay
Paraguay , officially the Republic of Paraguay , is a landlocked country in South America. It is bordered by Argentina to the south and southwest, Brazil to the east and northeast, and Bolivia to the northwest. Paraguay lies on both banks of the Paraguay River, which runs through the center of the...

, on Tuesday, November 10, 2009, at approximately 22:15 BST
Time in Brazil
Brazil has three time zones. Daylight saving time is also observed by the Southern, Southeast and Central-Western Brazilian states. A proposal to switch the entire country to a single UTC offset is under consideration....

. The blackout affected an estimated 60 million people in Brazil.

The blackout

Thousands of passengers were stranded as metro
Rapid transit
A rapid transit, underground, subway, elevated railway, metro or metropolitan railway system is an electric passenger railway in an urban area with a high capacity and frequency, and grade separation from other traffic. Rapid transit systems are typically located either in underground tunnels or on...

 trains came to a halt and buses failed to cope with the volume of passengers. There were widespread reports of road accidents as street lighting and traffic lights failed. The blackout began about 22:15 on Tuesday and lasted until about 02:45 on Wednesday in São Paulo, although power was restored gradually in some places from before midnight.

Causes

Heavy rains and strong winds caused three transformer
Transformer
A transformer is a device that transfers electrical energy from one circuit to another through inductively coupled conductors—the transformer's coils. A varying current in the first or primary winding creates a varying magnetic flux in the transformer's core and thus a varying magnetic field...

s on a key high-voltage transmission line to short circuit
Short circuit
A short circuit in an electrical circuit that allows a current to travel along an unintended path, often where essentially no electrical impedance is encountered....

, cutting the line and automatically causing the complete loss of 14 GW of power and the shutdown of the Itaipu Dam for the first time in its 25-year history. The power cut, which Brazilian officials said affected 18 of the country's 26 states, brought chaos to cities including São Paulo
São Paulo
São Paulo is the largest city in Brazil, the largest city in the southern hemisphere and South America, and the world's seventh largest city by population. The metropolis is anchor to the São Paulo metropolitan area, ranked as the second-most populous metropolitan area in the Americas and among...

, Rio de Janeiro
Rio de Janeiro
Rio de Janeiro , commonly referred to simply as Rio, is the capital city of the State of Rio de Janeiro, the second largest city of Brazil, and the third largest metropolitan area and agglomeration in South America, boasting approximately 6.3 million people within the city proper, making it the 6th...

, Belo Horizonte
Belo Horizonte
Belo Horizonte is the capital of and largest city in the state of Minas Gerais, located in the southeastern region of Brazil. It is the third largest metropolitan area in the country...

, Campo Grande
Campo Grande
-Climate:Campo Grande has a highland tropical climate, semi-humid, hot, and notably seasonal, with a dry winter season from May through September or October. Under the Koppen climate classification Campo Grande features a tropical wet and dry climate, albeit a noticeably cooler version of the...

 and Vitória.

Media such as Slashdot and 60 Minutes
60 Minutes
60 Minutes is an American television news magazine, which has run on CBS since 1968. The program was created by producer Don Hewitt who set it apart by using a unique style of reporter-centered investigation....

 reported that the outage was the work of hackers. However, in December, 2010, Wikileaks
Wikileaks
WikiLeaks is an international self-described not-for-profit organisation that publishes submissions of private, secret, and classified media from anonymous news sources, news leaks, and whistleblowers. Its website, launched in 2006 under The Sunshine Press organisation, claimed a database of more...

 released a US diplomatic cable marked SECRET suggested otherwise. The cable also reported that it


represented a loss of 28,000 megawatts - or 45 percent of total Brazilian consumption at that instant - of electricity and left an estimated 87 million residents without power. Scrutiny has been intense and speculation rife over the cause of the incident, in large part due to the recent announcement of Rio as the host of the 2016 summer Olympics.


and indicated that the longest outage was 6 hours, in Sao Paulo, and details interim reports on what failures caused the outage, and responses under consideration.

President
President of Brazil
The president of Brazil is both the head of state and head of government of the Federative Republic of Brazil. The president leads the executive branch of the federal government and is the commander-in-chief of the Brazilian Armed Forces...

 Luiz Inácio Lula da Silva
Luiz Inácio Lula da Silva
Luiz Inácio Lula da Silva , known popularly as Lula, served as the 35th President of Brazil from 2003 to 2010.A founding member of the Workers' Party , he ran for President three times unsuccessfully, first in the 1989 election. Lula achieved victory in the 2002 election, and was inaugurated as...

 arranged an emergency commission to enquire into the cause of the blackout
Power outage
A power outage is a short- or long-term loss of the electric power to an area.There are many causes of power failures in an electricity network...

. The blackout also unleashed a political stir as the Minister of Energy has been summoned to testify before Congress
National Congress of Brazil
The National Congress of Brazil is the legislative body of Brazil's federal government.Unlike regional legislative bodies – Legislative Assemblies and City Councils -, the Congress is bicameral, composed of the Federal Senate and the Chamber of Deputies .The Senate represents the 26 states and...

.

Paraguay

The Itaipu Dam is shared with Paraguay. In the immediate aftermath of its failure, interconnecting lines to Paraguay's other large powerplant, the Yacyreta Dam
Yacyretá Dam
The Yacyretá Dam or Hydroelectric Power Station Jasyretâ-Apipé is a dam and hydroelectric power plant built over the waterfalls of Jasyretâ-Apipé in the Paraná River, between the Argentine Province of Corrientes and the Paraguayan City of Ayolas. The dam is named for Yacyretâ Island just upstream,...

 (in the border with Argentina), also failed. All of the country's territory was affected by the blackout.

Brazil

Entirely affected states
  • São Paulo
    São Paulo (state)
    São Paulo is a state in Brazil. It is the major industrial and economic powerhouse of the Brazilian economy. Named after Saint Paul, São Paulo has the largest population, industrial complex, and economic production in the country. It is the richest state in Brazil...

  • Rio de Janeiro
    Rio de Janeiro (state)
    Rio de Janeiro is one of the 27 states of Brazil.Rio de Janeiro has the second largest economy of Brazil behind only São Paulo state.The state of Rio de Janeiro is located within the Brazilian geopolitical region classified as the Southeast...

  • Mato Grosso do Sul
    Mato Grosso do Sul
    Mato Grosso do Sul is one of the states of Brazil.Neighboring Brazilian states are Mato Grosso, Goiás, Minas Gerais, São Paulo and Paraná. It also borders the countries of Paraguay and Bolivia to the west. The economy of the state is largely based on agriculture and cattle-raising...

  • Espírito Santo
    Espírito Santo
    Espírito Santo is one of the states of southeastern Brazil, often referred to by the abbreviation "ES". Its capital is Vitória and the largest city is Vila Velha. The name of the state means literally "holy spirit" after the Holy Ghost of Christianity...



Partially affected states
  • Rio Grande do Sul
    Rio Grande do Sul
    Rio Grande do Sul is the southernmost state in Brazil, and the state with the fifth highest Human Development Index in the country. In this state is located the southernmost city in the country, Chuí, on the border with Uruguay. In the region of Bento Gonçalves and Caxias do Sul, the largest wine...

  • Santa Catarina
    Santa Catarina (state)
    Santa Catarina is a state in southern Brazil with one of the highest standards of living in Latin America. Its capital is Florianópolis, which mostly lies on the Santa Catarina Island. Neighbouring states are Rio Grande do Sul to the south and Paraná to the north. It is bounded on the east by...

  • Paraná
    Paraná (state)
    Paraná is one of the states of Brazil, located in the South of the country, bordered on the north by São Paulo state, on the east by the Atlantic Ocean, on the south by Santa Catarina state and the Misiones Province of Argentina, and on the west by Mato Grosso do Sul and the republic of Paraguay,...

  • Minas Gerais
    Minas Gerais
    Minas Gerais is one of the 26 states of Brazil, of which it is the second most populous, the third richest, and the fourth largest in area. Minas Gerais is the Brazilian state with the largest number of Presidents of Brazil, the current one, Dilma Rousseff, being one of them. The capital is the...

  • Mato Grosso
    Mato Grosso
    Mato Grosso is one of the states of Brazil, the third largest in area, located in the western part of the country.Neighboring states are Rondônia, Amazonas, Pará, Tocantins, Goiás and Mato Grosso do Sul. It also borders Bolivia to the southwest...

  • Goiás
    Goiás
    Goiás is a state of Brazil, located in the central part of the country. The name Goiás comes from the name of an indigenous community...

  • Rondônia
    Rondônia
    Rondônia is a state in Brazil, located in the north-western part of the country. To the west is a short border with the state of Acre, to the north is the state of Amazonas, in the east is Mato Grosso, and in the south is Bolivia. Its capital is Porto Velho. The state was named after Candido Rondon...

  • Acre
    Acre (state)
    Acre is one of the 27 states of Brazil. It is situated in the southwest of the Northern Region, bordering Amazonas to the north, Rondônia to the east, Bolivia to the southeast and the Ucayali Region of Peru to the south and west. It occupies an area of 152,581.4 km2, being slightly smaller...

  • Bahia
    Bahia
    Bahia is one of the 26 states of Brazil, and is located in the northeastern part of the country on the Atlantic coast. It is the fourth most populous Brazilian state after São Paulo, Minas Gerais and Rio de Janeiro, and the fifth-largest in size...

  • Sergipe
    Sergipe
    Sergipe , is the smallest state of the Brazilian Federation, located on the northeastern Atlantic coast of the country. It borders on two other states, Bahia to the south and west and Alagoas to the north, and to the east is the Atlantic Ocean...

  • Alagoas
    Alagoas
    Alagoas is one of the 27 federative units of Brazil and is situated in the eastern part of the Northeast Region. It borders: Pernambuco ; Sergipe ; Bahia ; and the Atlantic Ocean . It occupies an area of 27,767 km², being slightly larger than Haiti...

  • Pernambuco
    Pernambuco
    Pernambuco is a state of Brazil, located in the Northeast region of the country. To the north are the states of Paraíba and Ceará, to the west is Piauí, to the south are Alagoas and Bahia, and to the east is the Atlantic Ocean. There are about of beaches, some of the most beautiful in the...

  • Paraíba
    Paraíba
    Paraíba Paraíba Paraíba (Tupi: pa'ra a'íba: "bad to navigation"; Brazilian Portuguese pronunciation: is a state of Brazil. It is located in the Brazilian Northeast, and is bordered by Rio Grande do Norte to the north, Ceará to the west, Pernambuco to the south and the Atlantic Ocean to the east...

  • Rio Grande do Norte
    Rio Grande do Norte
    Rio Grande do Norte is one of the states of Brazil, located in the northeastern region of the country, occupying the northeasternmost tip of the South American continent. Because of its geographic position, Rio Grande do Norte has a strategic importance. The capital and largest city is Natal...


See also

  • List of power outages
  • Electricity sector in Brazil
    Electricity sector in Brazil
    Brazil has the largest electricity market in South America, with a power consumption that is more than double the combined consumption of Argentina, Bolivia, Chile and Uruguay. Its installed capacity is comparable to that of Italy and the United Kingdom, although with a much larger transmission...

  • Energy policy of Brazil
    Energy policy of Brazil
    Brazil is the 10th largest energy consumer in the world and the largest in South America. At the same time, it is an important oil and gas producer in the region and the world's second largest ethanol fuel producer....

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