An evaluation of the techno-economic potential of co-firing coal with woody biomass in thermal power plants in the south of Brazil

Hoffmann, Bettina Susanne; Szklo, Alexandre; Schaeffer, Roberto

doi:10.1016/j.biombioe.2012.06.016

Cited by 33 publications

(7 citation statements)

References 15 publications

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“…The price of biomass includes transportation to the processing plant. However, the differences between harvest location and location of demand can be large in Brazil, and it is therefore either economically or environmentally unfeasible to transport biomass over large distances . To assess the influence of biomass on the energy system in more detail, spatially explicit modeling of the supply potential of biomass is necessary.…”

Section: Discussionmentioning

confidence: 99%

Pathways for a Brazilian biobased economy: towards optimal utilization of biomass

Lap

Benders

Köberle

et al. 2019

Biofuels Bioprod Bioref

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Biomass is responsible for 25% of the primary energy supply in Brazil. However, future biomass demand will be influenced by many factors. This study evaluates potential pathways for the utilization of biomass in Brazil until 2050, while considering novel biobased sectors (renewable jet fuel and biochemicals), resource competition, and greenhouse gas (GHG) emissions. Whereas other least‐cost optimization models assess biobased options to meet energy and chemicals demand in Brazil to a limited extent, this study provides a detailed breakdown of biomass feedstock, including an extensive portfolio of biomass conversion technologies. A least‐cost optimization model is used to assess the demand for energy and chemicals, and the competition between biomass and other climate‐mitigation measures such as renewable power generation technologies, carbon capture and storage (CCS), and energy efficiency. Varied over the three scenarios, 86–96% of the sustainable biomass supply potential is used. Under more stringent mitigation targets, novel biomass conversion technologies start to play an important role: Biobased electricity production with CCS, jet fuel production from lignocellulosic biomass, and chemicals are partly produced from ethanol and bio‐naphtha. The modeling framework provides a transparent view of which type of biomass can be used for which specific purpose. It is therefore an interesting tool for future research, for example to examine the dynamic interaction with demand for land. © 2019 The Authors. Biofuels, Bioproducts and Biorefining published by Society of Chemical Industry and John Wiley & Sons, Ltd.

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Section: Discussionmentioning

confidence: 99%

Pathways for a Brazilian biobased economy: towards optimal utilization of biomass

Lap

Benders

Köberle

et al. 2019

Biofuels Bioprod Bioref

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“…While Brazil has abundant coal reserves in the Southern region, the national coal has a low heating value and high ash content. Thus, the future expansion of coal power plants will likely be supplied by imported coal resources [14].…”

Section: Discussionmentioning

confidence: 99%

Overlooked impacts of electricity expansion optimisation modelling: The life cycle side of the story

Portugal-Pereira

Köberle

Soria

et al. 2016

Energy

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a b s t r a c tThis work evaluates implications of incorporating LCA-GHG (life cycle assessment of GHG emissions) into the optimisation of the power generation mix of Brazil through 2050, under baseline and low-carbon scenarios. Furthermore, this work assesses the impacts of enacting a tax on LCA-GHG emissions as a strategy to mitigate climate change. To this end, a model that integrates regional life cycle data with optimised energy scenarios was developed using the MESSAGE-Brazil integrated model. Following a baseline trend, the power sector in Brazil would increasingly rely on conventional coal technologies. GHG emissions from the power sector in 2050 are expected to increase 15-fold. When enacting a tax on directcarbon emissions, advanced coal and onshore wind technologies become competitive. GHG emissions peak at 2025 and decrease afterwards, reaching an emission level 40% lower in 2050 than that of 2010. However, if impacts were evaluated through the entire life cycle of power supply systems, LCA-GHG emissions would be 50% higher in 2050 than in 2010. This is due to loads associated with the construction of plant infrastructures and extraction and processing of fossil fuel resources. Thus, taxes might not be as effective in tackling GHG emissions as shown by past studies, if they are only applied to direct emissions.

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“…Three new coal power units are under construction, with a combined capacity of 1.4 GW, and this number is expected to increase in the near future (Lucena et al, 2015;Nogueira et al, 2014). Nonetheless, domestic coal brings many limitations, since it has a high ash content resulting in a low-heating-value for this fuel (Hoffmann et al, 2012;Nogueira et al, 2014). Thus, future coal-based technologies are expected to run with coal mostly imported from Colombia (Lucena et al, 2015).…”

Section: The Brazilian Power Sectormentioning

confidence: 99%

Scenarios for the future Brazilian power sector based on a multi-criteria assessment

Santos

Ferreira

Araújo

et al. 2017

Journal of Cleaner Production

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The Brazilian power generation sector faces a paradigm change driven by, on one hand, a shift from a hydropower dominated mix and, on the other hand, international goals for reducing greenhouse gas emissions. The objective of this work is to evaluate five scenarios for the Brazilian power sector until 2050 using a multi-criteria decision analysis tool. These scenarios include a baseline trend and low carbon policy scenarios based on carbon taxes and carbon emission limits. To support the applied methodology, a questionnaire was elaborated to integrate the perceptions of experts on the scenario evaluation process. Considering the results from multi-criteria analysis, scenario preference followed the order of increasing share of renewables in the power sector. The preferable option for the future Brazilian power sector is a scenario where wind and biomass have a major contribution. The robustness of the multi-criteria tool applied in this study was tested by a sensitivity analysis. This analysis demonstrated that, regardless of the respondents' preferences and backgrounds, scenarios with higher shares of fossil fuel sources are the least preferable option, while scenarios with major contributions from wind and biomass are the preferable option to supply electricity in Brazil through 2050.

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An evaluation of the techno-economic potential of co-firing coal with woody biomass in thermal power plants in the south of Brazil

Cited by 33 publications

References 15 publications

Pathways for a Brazilian biobased economy: towards optimal utilization of biomass

Pathways for a Brazilian biobased economy: towards optimal utilization of biomass

Overlooked impacts of electricity expansion optimisation modelling: The life cycle side of the story

Scenarios for the future Brazilian power sector based on a multi-criteria assessment

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