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Assessing the potential of integrating cassava residues-based bioenergy into national energy mix using long-range Energy Alternatives Planning systems approach

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  • Padi, Richard Kingsley
  • Chimphango, Annie

Abstract

The long-term greenhouse gas mitigation and economic impacts of integrating bioenergy from cassava residues into a national energy mix, based on South Africa, was assessed using Long-range Energy Alternatives Planning (LEAP) models for three integration schemes [(I) cassava stalks (CS) & bagasse (CB) for bioelectricity, (II) CS for bioelectricity & CB for bioethanol, and (III) CS & CB for bioethanol] and the current energy scheme over a 30-year period. There is potential bioethanol/gasoline blending of 2.97–9.69% (v/v) for transport fuel, and bioelectricity for meeting 32–58.5% agriculture power demand. Scheme (I) shows 6.2-folds emission savings over scheme (III). In addition, there are potential cost increments ranging from US$ 26.67 billion (I) to US$ 455.49 billion (III) based on the existing energy scheme. In scheme (I), the costs could be partially offset by avoided emissions costs ($18.9 billion). Hence, the bioenergy schemes (I) & (II) exemplify sustainable national bioenergy models for enhancing low-carbon economies.

Suggested Citation

  • Padi, Richard Kingsley & Chimphango, Annie, 2021. "Assessing the potential of integrating cassava residues-based bioenergy into national energy mix using long-range Energy Alternatives Planning systems approach," Renewable and Sustainable Energy Reviews, Elsevier, vol. 145(C).
    • Handle: RePEc:eee:rensus:v:145:y:2021:i:c:s1364032121003592
    DOI: 10.1016/j.rser.2021.111071
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