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Summary of Use of Alternative Fuels in the Cement Sector in Senegal: Opportunities, Challenges and Solutions

Core Content

This report, produced by the International Finance Corporation (IFC) in collaboration with the Korea Green Growth Partnership, evaluates the potential for using alternative fuels (AF) in the cement sector in Senegal. It outlines the opportunities, challenges, and proposed solutions for increasing the use of AF, with a focus on waste streams such as municipal solid waste (MSW), agricultural residue, sewage sludge, waste tires, and used oils.

Main Viewpoints

• Energy Intensity of Cement Production: Cement production is highly energy-intensive, with thermal energy accounting for about 40% of production costs. In Senegal, the technical potential for AF substitution is significant, reaching up to 7.9 million GJ/year, which is approximately 50% of the total energy demand.

• Current Use of AF: Some cement companies in Senegal are already utilizing agricultural waste as an alternative fuel, but the overall substitution rate is relatively low compared to global best practices.

• Global Best Practices: In many developed and emerging markets, cement producers have successfully substituted up to 30% (and in some cases, 100%) of their thermal energy needs with AF. Countries like Poland and Egypt have demonstrated that strong policy frameworks, including landfill taxes and Extended Producer Responsibility (EPR), can drive the adoption of AF.

• Economic Potential: The economic potential for AF substitution is substantial, with the potential to reduce fuel costs by up to 10% annually. RDF and TDF show the greatest economic viability, while agricultural residue may be more challenging and costly to integrate due to its dispersed nature.

• Investment Requirements: To achieve a 25-30% substitution rate, cement producers in Senegal would need to invest up to US$25 million, which includes US$15 million for kiln modifications and US$10 million for establishing Material Recovery Facilities (MRFs) to process MSW and tires.

• Payback Period: The investment is expected to pay back in 3-4 years, depending on the sourcing model and fuel mix.

• Barriers to Adoption: The current lack of a robust waste management system, poor waste collection and transportation infrastructure, and limited incentives for private sector participation in waste management projects hinder the widespread use of AF in Senegal.

• Policy Recommendations: The report emphasizes the need for a clear legal framework defining waste ownership and responsibilities, a waste quantity measurement system, and transparent long-term contracting approaches. It also recommends the implementation of Extended Producer Responsibility to ensure that waste management costs are borne by producers.

Key Information

Technical Potential

• Municipal Solid Waste (MSW): The main source of RDF, with potential for significant substitution. However, current collection and transportation infrastructure is inadequate.
• Agricultural Residue: Available in large quantities but dispersed across the country, making it less economically viable for large-scale use.
• Sewage Sludge: Not currently produced in sufficient volumes, and infrastructure for its production is only planned for the next 10-15 years.
• Waste Tires: A promising source of TDF, but requires dedicated collection and processing systems.
• Used Oils: Can be used as AF, but may require more complex processing than other waste streams.

Economic Potential

• Fuel Cost Savings: Up to 10% savings in fuel costs annually, with a potential annual saving of US$6-7 million.
• Investment Requirements: Up to US$25 million for infrastructure development and kiln modifications.
• Payback Period: 3-4 years, depending on the model and fuel mix.

Policy and Institutional Framework

• Waste Management System: Senegal's waste management system is transitioning, with a national coordinating agency and a local operational body in the Dakar area.
• Private Sector Involvement: The current policy framework does not provide strong incentives for private sector participation in waste management.
• Extended Producer Responsibility (EPR): A critical mechanism to ensure waste management costs are covered by polluters, including through the cost of goods.
• Private-Public Partnerships (PPPs): Encouraged to foster private investment in waste management infrastructure.

Global Examples

• Poland: Achieved a 60% AF substitution rate due to landfill taxes, EPR, and strong collaboration between cement companies and the waste management sector.
• Egypt: The Katameya plant of Italcementi achieved an 8.3% substitution rate in two years, reducing CO₂ emissions by 115,000 tons.
• Mexico: CEMEX's Tepeaca plant uses 800 tons of commercial and industrial residues per day and plans to expand capacity to 1,600 tons per day.

Conclusion

The use of alternative fuels in Senegal's cement sector presents significant opportunities for reducing energy costs and environmental impact. However, achieving these benefits requires the development of a robust waste management system, clear policy frameworks, and mechanisms that encourage private sector participation. The report recommends a series of measures, including the establishment of MRFs, the implementation of EPR, and the creation of transparent and long-term contracts, to support the transition to a more sustainable and economically viable fuel sourcing model.