2013年-世界发展银行全球_What_Have_We_Learned_about_Household_Biomass_Cooking_in_Central_America__134页_2mb

Summary of "What Have We Learned about Household Biomass Cooking in Central America?"

Core Content

This report provides an in-depth analysis of household biomass cooking in Central America, focusing on the use of traditional fuels and stoves, the development of improved biomass cookstoves (ICS), and the challenges and opportunities for their widespread adoption. It also outlines economic considerations, lessons learned from existing cookstove programs, and recommendations for future initiatives.

Main Points

1. Current Fuelwood Use and Stove Technology Development

• Fuelwood Use: Biomass, primarily fuelwood, constitutes a significant portion of household cooking in Central America. Approximately 20 million people use biomass for cooking, with the majority in Guatemala, Honduras, and Nicaragua.
• Fuelwood Collection: Most households collect fuelwood themselves, with urban and salaried households more likely to purchase it.
• Cooking Practices: Traditional cooking practices are common, with tortilla-making being the main and most energy-intensive task. Other typical dishes like frijoles and guisados also require significant energy and time.
• Cooking Appliances: Traditional open fires and rudimentary stoves (often with a chimney) are widely used. These stoves serve multiple functions beyond cooking, such as heating, drying, and insect control.
• Technology Development: A new generation of ICS with nearly 20 models is now available, featuring design improvements like rocket elbows, planchas, and chimneys. These models are more efficient than previous stoves and are available in both in-situ built and industrial forms.

2. Economic Considerations and Regional Experience

• Fuel and Appliance Costs: LPG is expensive and often subsidized, making it less accessible. Fuelwood is relatively cheaper but not always sustainable. ICS production costs range from US$60 to US$160.
• Benefits of ICS: ICS offer substantial economic and health benefits, including reduced fuel expenditures, improved indoor air quality, and time savings. The payback period for ICS is estimated to be around 13 months if 40% of fuelwood is purchased.
• Carbon Finance: Carbon finance can play a critical role in sustaining ICS dissemination by providing additional revenue from emission reductions, helping to offset the high upfront costs.
• Regional Experience: Despite efforts by governments, NGOs, and local entrepreneurs, ICS penetration remains low, at less than 10% of the affected population. The report suggests that a market share of 25% by 2020 is a regional goal, requiring an investment of US$600 million.

3. Lessons Learned from Cookstove Programs

• User Preferences: ICS adoption is influenced by user preferences, cultural practices, and cooking habits. They are not always the first choice, especially for the very poor.
• Social and Cultural Factors: Understanding and addressing social and cultural aspects is crucial for successful ICS dissemination. Women are typically responsible for cooking, while men are involved in fuel collection.
• Enabling Environment: A supportive institutional environment is necessary for ICS programs to succeed. This includes government policies, financial incentives, and public awareness campaigns.
• Standards and Quality Control: Establishing standards for ICS is essential for creating a market and ensuring quality. Without them, users are less likely to adopt and trust new stoves.
• Business Models: Different business models have been used in Central America, including centralized mass production and decentralized in-situ construction. Each has its own challenges and advantages.
• Financial Mechanisms: A variety of financial mechanisms, such as subsidies, free distribution, and micro-credits, are needed to support ICS adoption and scale-up. However, the effectiveness of these mechanisms is still under evaluation.

4. Recommendations and Conclusions

• Enabling Environment: Governments should create an enabling environment for ICS by designating a national coordinating authority and integrating energy, health, and environmental policies.
• Support for New Products: Investment in the development of more advanced and efficient ICS is needed to improve performance and user satisfaction.
• Increase Efficiency and Scale: Efforts should focus on increasing the efficiency and scale of ICS dissemination through better financial support and market development.
• Regional Campaigns: A country-based regional campaign is necessary to educate the public on the benefits of ICS, including fuel savings, health improvements, and environmental sustainability.

Key Information

• Fuelwood Users: 20 million people in Central America use biomass for cooking, with 86% in Guatemala, Honduras, and Nicaragua.
• ICS Penetration: Less than 10% of fuelwood users have adopted ICS, despite their benefits.
• Financial Costs: The average cost of an ICS is US$150, which includes production, dissemination, training, and certification.
• Health and Environmental Benefits: ICS reduce exposure to smoke, improve public health, and contribute to environmental sustainability by decreasing deforestation and greenhouse gas emissions.
• Regional Goals: The goal is to install 1,000,000 ICS by 2020, which would require a significant investment.
• Challenges: High upfront costs, lack of quality control, and limited access to LPG in rural areas are major barriers to ICS adoption.

Conclusion

The report emphasizes the importance of ICS in addressing energy, health, and environmental challenges in Central America. It calls for a comprehensive approach that includes policy support, financial mechanisms, and community engagement to achieve sustainable and widespread adoption of improved biomass cookstoves.