Browsing by Author "9A8B9999-0E2B-443A-94AB-C093ECE6A231"

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 ...

Capacity mechanisms: needs, solutions and state of affairs

Barquín Gil, Julián; Nobrega Barroso, Luiz Augusto; Batlle López, Carlos; Mastropietro, Paolo (CIGRÉ (París, Francia), 01/02/2016)

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 ...