2010年-世界发展银行全球_Expenditure_of_Low-Income_Households_on_Energy___Evidence_from_Africa_and_Asia_136页_3mb

Summary of "Expenditure of Low-Income Households on Energy: Evidence from Africa and Asia"

Core Content

This report analyzes the energy expenditure patterns of low-income households in several countries across Africa and Asia, focusing on how energy costs affect household budgets and the implications for energy policy. The study draws on nationally administered household expenditure surveys to examine the distribution of energy use and spending across different income levels, urban and rural areas, and the impact of energy price changes on household welfare.

Main Points

• Energy Expenditure and Income Levels:
  Households in urban areas generally spend a higher proportion of their income on energy compared to rural households, except in certain cases like Thailand, where rural biomass expenditure decreased with rising income. In many countries, the poorest quintiles spend the most on energy, especially biomass and kerosene.

• Energy Sources:
  Biomass remains the primary energy source for cooking and lighting in most developing countries, particularly in rural areas. Electricity and LPG are more common in urban settings, but even in high-income countries, biomass is used for cooking in some households. Kerosene is widely used in rural areas, while LPG is more prevalent in urban areas.

• Energy Use Patterns by Quintile:
  The study finds that energy expenditure shares increase with income in most countries, except in Bangladesh and Cambodia where they decrease. For example, in Bangladesh, the bottom quintile spends over 40% of their income on kerosene, while the top quintile spends less than 1%. In contrast, in Vietnam, the share of energy expenditure for the poorest quintiles is similar to that of the wealthiest.

• Impact of Oil Prices on Energy Costs:
  The study highlights that energy price shocks disproportionately affect low-income households. This is especially true when subsidies are removed, as higher fuel prices can lead to increased food prices due to the link between oil and food costs.

• Universal Subsidies and Regressivity:
  Universal price subsidies for petroleum products are regressive in most countries, meaning they disproportionately benefit higher-income households. However, kerosene subsidies may be more pro-poor in some contexts, though they are often diverted to the automotive sector due to its substitutability with diesel.

• Policy Implications:
  The findings suggest that targeted assistance, such as cash transfers, may be more effective in helping the poor cope with higher energy prices than broad subsidies. Additionally, improving access to modern energy sources like LPG, electricity, and natural gas is essential for reducing reliance on biomass, which has negative health and environmental impacts.

Key Findings

• Biomass Usage:
  Biomass is the dominant energy source in rural areas and is used by nearly all low-income households. It is also widely used in urban areas in countries like Bangladesh, Cambodia, and Uganda, even when it is not purchased.

• Kerosene and LPG:
  Kerosene is more commonly used in rural areas, while LPG is more prevalent in urban areas. However, LPG is often not accessible to the poorest households due to delivery frequency and cost. In some countries, kerosene subsidies are more effective in supporting low-income households.

• Modern Energy Sources:
  Modern energy sources such as electricity, LPG, and natural gas are used by higher-income households. In most countries, the share of total household expenditure on modern energy ranges from 2% to 10%, with biomass accounting for a larger portion in many cases.

• Transport and Food Costs:
  The study finds that transport costs are often similar in magnitude to petroleum product costs, and in some countries, such as Cambodia and Vietnam, they are relatively low. Food expenditures, however, are significantly higher than energy expenditures, especially in rural areas.

• Regressivity of Subsidies:
  Universal subsidies for petroleum products tend to be regressive, as they benefit wealthier households more than poorer ones. This is due to the ease of diversion and the fact that richer households are more likely to use liquid fuels.

• Policy Recommendations:
  Policymakers should consider targeted assistance programs rather than universal subsidies. Improving infrastructure, ensuring reliable fuel supply, and addressing market distortions are critical for enabling the transition from traditional biomass to modern energy sources.

Methodology

• The study uses data from household expenditure surveys in Bangladesh, Cambodia, India, Indonesia, Kenya, Pakistan, Thailand, Uganda, and Vietnam.
• It divides households into five quintiles based on per capita expenditure.
• Expenditure shares are calculated for various energy sources, food, and transport.
• The analysis includes both user households and non-user households.

Conclusion

The report emphasizes the importance of understanding how energy expenditures vary with income and location, and the need for policies that effectively support low-income households without undermining the efficiency of energy markets. It suggests that while universal subsidies may not be the best approach, targeted interventions and improvements in energy access and affordability could lead to more equitable outcomes.

Key Figures and Tables

• Table E.1: Lists the survey countries, years, per capita expenditure, and urbanization rates.
• Table E.2: Provides the shares of household expenditure on various energy sources, food, and transport across all countries.
• Figures E.1 and E.2: Show monthly rural and urban household expenditures on biomass, respectively, adjusted for purchasing power parity.

This study serves as a valuable resource for policymakers, energy sector managers, and development practitioners aiming to design more effective and equitable energy policies in developing countries.