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    • A delicate balance in South America 

      Rudnick, Hugh; Nobrega Barroso, Luiz Augusto; Valenzuela Mocarquer, Luis Sebastian; Bezerra, Bernardo Vieira (02/07/2008)
      This article deals with the challenges of balancing the need for hydroelectricity with the impact on the environment. Economic efficiency, energy security, and environmental sustainability are concerns that must be considered ...

    • An Aumann-Shapley approach to allocate transmission service cost among network users in electricity markets 

      Junqueira, Max; Costa, Luiz Carlos da; Nobrega Barroso, Luiz Augusto; Oliveira, Gerson C.; Thomé, Luiz Mauricio; Veiga Pereira, Mario (01/11/2007)
      This work presents a new methodology for the allocation of transmission service cost among network users in energy markets. The proposed method is based on an optimization/game-theoretic framework (Aumann-Shapley) that ...

    • Auction approaches of long-term contracts to ensure generation investment in electricity markets: lessons from the Brazilian and Chilean experiences 

      Moreno Vieyra, Rodrigo; Nobrega Barroso, Luiz Augusto; Bezerra, Bernardo Vieira; Valenzuela Mocarquer, Luis Sebastian; Rudnick, Hugh (01/10/2010)
      The implementation of auctions of long-term electricity contracts is arising as an alternative to ensure generation investment and therefore achieve a reliable electricity supply. The aim is to reconcile generation adequacy ...

    • Balance of power 

      Valenzuela Mocarquer, Luis Sebastian; Nobrega Barroso, Luiz Augusto; Rudnick, Hugh; Bezerra, Bernardo Vieira; Veiga Pereira, Mario (01/09/2009)
      This paper discusses the challenges in the procurement of electricity. The primary challenge faced by the countries in Latin America is to ensure sufficient capacity and investment to reliably serve their growing economies. ...

    • Bid-based dispatch of hydrothermal systems in competitive markets 

      Lino, Priscila Rochinha; Nobrega Barroso, Luiz Augusto; Veiga Pereira, Mario; Kelman, Rafael; Fampa, Márcia Helena C. (01/04/2003)
      The objective of this work is to investigate possible hydro-scheduling inefficiencies under a bidding scheme. It will be shown that the market-based dispatch of hydro-plants, under a perfect competitive market, converges ...

    • Bidding strategies with fuel supply uncertainty in auctions of long-term energy call options 

      Bezerra, Bernardo Vieira; Nobrega Barroso, Luiz Augusto; Veiga Pereira, Mario (01/05/2011)
      This work develops a stochastic optimization model for the creation of a bidding strategy for a generator in an energy call option auction similar to Brazil's, i.e., where the bidder can offer both the premium and the ...

    • Bilevel optimization applied to strategic pricing in competitive electricity markets 

      Fampa, Márcia Helena C.; Nobrega Barroso, Luiz Augusto; Candal Reis Fernandes, Denise; Simonetti, Luidi Gelabert (01/03/2008)
      In this paper, we present a bilevel programming formulation for the problem of strategic bidding under uncertainty in a wholesale energy market (WEM), where the economic remuneration of each generator depends on the ability ...

    • Can Brazil learn from California? 

      Nobrega Barroso, Luiz Augusto; Veiga Pereira, Mario; Kelman, Rafael; Lino, Priscila Rochinha; Rosenblatt, José (01/08/2002)
      Most countries that have recently reformed their energy sectors are looking carefully at California. An unprecedented electric power deficit has affected one of the main economies of the world, threatening to bankrupt two ...

    • Creating harmony in South America 

      Nobrega Barroso, Luiz Augusto; Valenzuela Mocarquer, Luis Sebastian; Rudnick, Hugh; Castro, Tarcísio (17/07/2006)
      South America is looking for ways to harmonize power supply expansion with growing environmental concerns as electricity demand increases at a fast pace. While South America contributed little to the world's total pollutant ...

    • Demand response models with correlated price data: a robust optimization approach 

      Ferreira, Rafael de Sa; Nobrega Barroso, Luiz Augusto; Carvalho, Martha Martins (01/08/2012)
      In the electricity industry, the processes through which consumers respond to price signals embedded in tariffs by changing their consumption patterns is generally referred to as demand response. In such a context, consumers ...

    • Electricity auctions: an overview of efficient practices 

      Nobrega Barroso, Luiz Augusto (World Bank Publications (Washington, Estados Unidos de América), 25/07/2011)

    • Expansion pressure: energy challenges in Brazil and Chile 

      Bezerra, Bernardo Vieira; Valenzuela Mocarquer, Luis Sebastian; Nobrega Barroso, Luiz Augusto; Rudnick, Hugh (01/05/2012)
      In Latin America, primary energy demand is projected to grow on average by 1.7% per year and to reach 830 million tons of oil equivalent (mtoe) by 2035, according to the International Energy Agency's 2011 World Energy ...

    • Flexible connections: solutions and challenges for the integration of renewables in South America 

      Rudnick, Hugh; Nobrega Barroso, Luiz Augusto; Llarens, Daniel; Watts, David G.; de Sa Ferreira, Rafael (01/03/2012)
      Feed-in tariffs, quota systems, and auction schemes are all used to stimulate NCRE growth in South America. These methods present common challenges in terms of development, operation, and transmission. Common solutions to ...

    • Long-term optimal allocation of hydro generation for a price-maker company in a competitive market: latest developments and a stochastic dual dynamic programming approach 

      Flach, Bruno C.; Nobrega Barroso, Luiz Augusto; Veiga Pereira, Mario (01/02/2010)
      Since the liberalisation of the power industry, there has been a large amount of literature on the determination of optimal bidding decisions for price-maker energy producers. The vast majority of the work developed so far ...

    • Market power assessment and mitigation in hydrothermal systems 

      Kelman, Rafael; Nobrega Barroso, Luiz Augusto; Veiga Pereira, Mario (01/08/2001)
      The objective of this work is to investigate market power issues in bid-based hydrothermal scheduling. Initially, market power is simulated with a single stage Nash-Cournot equilibrium model. Market power assessment for ...

    • Market power issues in bid-based hydrothermal dispatch 

      Nobrega Barroso, Luiz Augusto; Fampa, Márcia Helena C.; Kelman, Rafael; Veiga Pereira, Mario; Lino, Priscila Rochinha (01/11/2002)
      The objective of this work is to investigate market power issues in bid-based hydrothermal scheduling. Initially, market power was simulated with a single stage Cournot-Nash equilibrium model. In this static model the ...

    • Nash equilibrium in strategic bidding: a binary expansion approach 

      Nobrega Barroso, Luiz Augusto; Carneiro, Rafael Dix; Granville, Sergio; Veiga Pereira, Mario; Fampa, Márcia Helena C. (01/05/2006)
      This paper presents a mixed integer linear programming solution approach for the equilibrium problem with equilibrium constraints (EPEC) problem of finding the Nash equilibrium (NE) in strategic bidding in short-term ...

    • Offering strategies and simulation of multi items dynamic auctions of energy contracts 

      Nobrega Barroso, Luiz Augusto; Street, Alexandre; Granville, Sergio; Veiga Pereira, Mario (01/11/2011)
      The objective of this work is threefold. We firstly present an optimization model for a price-taker hydrothermal generation company (Genco) to devise bidding strategies in multi-item iterative auctions of long-term contracts. ...

    • Planning for big things in Brazil 

      Nobrega Barroso, Luiz Augusto; Porrua, Fernando; Thomé, Luiz Mauricio; Veiga Pereira, Mario (01/09/2007)
      This paper discusses the planning and building of large-scale transmission networks in competitive hydrothermal systems. The business model for transmission expansion in Brazil relies on a combination of planning and ...

    • Pricing flexible natural gas supply contracts under uncertainty in hydrothermal markets 

      Street, Alexandre; Nobrega Barroso, Luiz Augusto; Chabar, Raphael M.; Mendes, André T. S.; Veiga Pereira, Mario (01/08/2008)
      The worldwide development of the natural gas industry resulted in an integration process between electrical and gas sectors in several countries. In Brazil, this process has been taking place in a consistent manner, ...