Iimi, Atsushi

Transport Global Practice
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Industrial organization, Development economics
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Transport Global Practice
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Last updated August 2, 2023
Atsushi Iimi is a Senior Economist in the Transport Global Practice of the World Bank where he specializes in development economics related to the Bank’s transport operations in Africa. He joined the World Bank in 2006 after earning a Ph.D. in economics from Brown University. Before joining the Bank, he also worked at IMF and JICA/OEFC, Japan. His research interests include spatial analysis, rural accessibility, evaluation of transport and energy projects, growth and public expenditure. His research on these topics has been published in scholarly journals, such as the Review of Industrial Economics, Journal of Urban Economics, Journal of Applied Economics, the Development Economies, and IMF Staff Papers.
Citations 9 Scopus

Publication Search Results

Now showing 1 - 4 of 4
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    Firm Productivity and Infrastructure Costs in East Africa
    (World Bank, Washington, DC, 2015-06) Iimi, Atsushi ; Humphrey, Richard Martin ; Melibaeva, Sevara
    Infrastructure is an important driving force for economic growth. It reduces trade and transaction costs and stimulates the productivity of the economy. Africa has been lagging behind in the global manufacturing market. Among others, infrastructure is an important constraint in many African countries. Using firm-level data for East Africa, the paper reexamines the relationship between firm performance and infrastructure. It is shown that labor costs are by far the most important to stimulate firm production. Among the infrastructure sectors, electricity costs have the highest output elasticity, followed by transport costs. In addition, the paper shows that the quality of infrastructure is important to increase firm production. In particular, quality transport infrastructure seems to be essential. The paper also finds that agglomeration economies can reduce firm costs. The agglomeration elasticity is estimated at 0.03–0.04.
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    Estimating the Demand for Informal Public Transport: Evidence from Antananarivo, Madagascar
    (World Bank, Washington, DC, 2022-04) Iimi, Atsushi
    Informal public transport has been growing rapidly in many developing countries. Because urban infrastructure development tends to lag rapid population growth, informal public transport often meets the growing gap between demand and supply in urban mobility. Despite the rich literature primarily focused on formal transport modes, the informal transport sector is relatively unknown. This paper analyzes the demand behavior in the “informal” minibus sector in Antananarivo, Madagascar, taking advantage of a recent user survey of thousands of people. It finds that the demand for informal public transport is generally inelastic. Essentially, people have no other choice. While the time elasticity is estimated at −0.02 to −0.05, the price elasticity is −0.05 to −0.06 for short-distance travelers, who may have alternative choices, such as motorcycle taxi or walking. Unlike formal public transportation, the demand also increases with income. Regardless of income level, everyone uses minibuses. The estimated demand functions indicate that people prefer safety and more flexibility in transit. The paper shows that combining these improvements and fare adjustments, the informal transport sector can contribute to increasing people’s mobility and reducing traffic congestion in the city.
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    Energy-Saving Effects of Progressive Pricing and Free CFL Bulb Distribution Program: Evidence from Ethiopia
    (Published by Oxford University Press on behalf of the World Bank, 2019-06) Iimi, Atsushi ; Elahi, Raihan ; Kitchlu, Rahul ; Costolanski, Peter
    In Africa, about 70 percent of the total population still lives without electricity. Significant resources are needed to meet the gap. Demand-side management is crucial to curb the increasing demand even in developing countries. A traditional approach is to raise prices, but promoting energy-efficient products such as compact fluorescent lamp (CFL) bulbs is also a win-win proposition. While end-users can reduce their spending, power utilities can avoid costly investments in new generation capacity. This paper estimates the effects of progressive pricing as well as CFL distribution program in Ethiopia. It is found that the increasing block tariff structure reduced the demand: the price elasticity is estimated at 0.29. This is particularly useful to influence large-volume users, who are presumably the rich. The CFL program is also found effective to contain the electricity demand. The estimated impact is about 45 kWh per customer. This is significant energy savings particularly for low-volume users.
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    Sustainability of a Residential CFL Distribution Program: Evidence from Ethiopia
    (World Bank, Washington, DC, 2016-09) Diaw, Issa ; Elahi, Raihan ; Iimi, Atsushi
    Energy-efficient products generally offer a win-win proposition, because they pay for themselves. End users can reduce their energy costs, and power utilities can avoid costly investments in extra generation capacity. Moreover, energy efficiency can contribute to mitigating global warming. This paper casts light on the sustainability of the residential use of compact fluorescent lamps after the free compact fluorescent lamp distribution program in Ethiopia. It is found that the direct program effect has been sustained for at least four years after the program. The effect of the distributed compact fluorescent lamps may taper off, if some of the program beneficiaries reinstall relatively cheap incandescent bulbs when the compact fluorescent lamps are burned out. However, many households replaced burned out compact fluorescent lamps with new compact fluorescent lamps. This effect is found to be statistically significant, particularly among relatively low-income households, whose demand is more price-elastic. All the indications are that program participants were generally convinced that compact fluorescent lamp bulbs are more cost-effective in the long run and the program effect is sustained over time.