In 2009, the Expansions and Reinforcements Plan, consolidated with the Transmission Expansion Plan - PAR / PET for the triennium 2010-2012, was issued.

The works displayed in this document indicate an increase of more than 20,000 km in the length of transmission lines, and about 25,000 MVA in the transformation capacity of the Main Transmission Grid in the reporting period, categorized in the following tables.

It is estimated that the works included in the PAR 2010-2012 will require investments in the order of R$ 16 billion, considering the reference costs established by Eletrobras. Amongst the major works considered in this study, the following should be emphasized:

South Region

• The State of Mato Grosso do Sul
  
  • New 230 kV grid in the State of Mato Grosso do Sul for the interconnection of biomass plants and small hydroelectric plants.

Southeast and Midwest Regions

• The State of Sao Paulo
  
  • Definition of new supply points (Substations Cerquilho III, 230/138 kV, Nova Paraguaçu Paulista 138/88 kV and Assis 230/138 kV).
  • Transmission line Araraquara 2 – Taubate, in 500 kV, for the integration of the Madeira River Complex Plant.
• The States of Rio de Janeiro and Espirito Santo
  
  • Definition of new supply points (substations Viana 500/345 kV and Linhares 230/138 kV),
  • Transmission line Mesquita – Viana, in 500 kV.
  • Transmission line Mascarenhas – Linhares, in 230 kV.
  • Fifth 345/138 kV transformer of substation Jacarepagua and third 345/138 kV transformer of substation Viana
• The State of Minas Gerais
  
  • Definition of new supply points (substations Itabirito 500/345 kV and Padre Fialho 345/138 kV).
  • Transmission lines Mesquita – Viana, in 500 kV, and Pirapora 2 – Montes Claros 2, in 345 kV.
• The State of Goias and Distrito Federal (Federal District)
  
  • Definition of new supply points (substation Trindade 500/230 kV).
  • Transmission line Rio Verde Norte – Trindade, in double circuit of 500 kV.
  • Transmission lines in 230 kV: Trindade – Xavantes (in double circuit), Trindade – Carajas and Xavantes – Pirineus.
• The State of Mato Grosso
  
  • Transmission lines in 500 kV: Jauru – Cuiaba, Cuiaba – Rio Verde Norte (in double circuit) and Rio Verde Norte – Trindade.
  • Transmission lines in 230 kV: Nobres – Cuiaba and Nobres – Nova Mutum (in double circuit)

North and Northeast Regions

• Definition of new supply points (substations 230/138 kV: Carajas, Tucurui-Vila and Xinguara; substations 230/69 kV: Teresina III, Encruzo Novo and Arapiraca).
• Transmission lines in 230 kV: Jacaracanga – Cotegipe (double circuit), Sapeaçu – Santo Antonio de Jesus (third circuit), Teresina II – Teresina III (double circuit), Miranda II – Encruzo Novo and Itacaiunas – Carajas (third circuit).

It is noticeable that, in 2009, the geo-referenced database of the transmission system - SINDAT was updated with information until the year 2011, being issued about 2,000 electro-geographic maps for use by companies in the electricity sector. It should be noted that the SINDAT website recorded 18,278 visits in 2009.