Publication:
Infrastructure Investments under Uncertainty with the Possibility of Retrofit : Theory and Simulations

Loading...
Thumbnail Image
Files in English
English PDF (1.96 MB)
284 downloads
English Text (142.48 KB)
56 downloads
Published
2011-01-01
ISSN
Date
2012-03-19
Author(s)
Miller, Sebastian
Siddiqui, Sauleh
Editor(s)
Abstract
Investments in large, long-lived, energy-intensive infrastructure investments using fossil fuels increase longer-term energy use and greenhouse gas emissions, unless the plant is shut down early or undergoes costly retrofit later. These investments will depend on expectations of retrofit costs and future energy costs, including energy cost increases from tighter controls on carbon emissions. Simulation analysis shows that the retrofit option can significantly reduce anticipated future energy consumption as of the time of initial investment, and total future energy plus retrofit costs. The more uncertain are the costs, the greater the value of this option. However, the future retrofit option also induces more energy-intensive infrastructure choices, partly offsetting the direct effect of having the option on anticipated energy use. Efficient, forward-looking infrastructure investments have high potential for reducing long-term energy consumption. Particularly if energy prices are expected to rise, however, the potential for reduced energy consumption will be eroded if expectations of energy prices do not include environmental costs or future retrofit possibilities and technologies are not adequately developed.
Link to Data Set
Citation
Miller, Sebastian; Strand, Jon; Siddiqui, Sauleh. 2011. Infrastructure Investments under Uncertainty with the Possibility of Retrofit : Theory and Simulations. Policy Research working paper ; no. WPS 5516. © World Bank. http://hdl.handle.net/10986/3289 License: CC BY 3.0 IGO.
Associated URLs
Associated content
Report Series
Report Series
Other publications in this report series
  • Publication
    Climate and Social Sustainability in Fragility, Conflict, and Violence Contexts
    (Washington, DC: World Bank, 2026-01-07) Cuesta Leiva, Jose Antonio; Huff, Connor
    Climate change is widely recognized as a driver of violent conflict, but its broader social effects remain less understood. Ignoring these dimensions risks a vicious cycle where climate policies might undermine socially just adaptation. Evidence is still limited on how climate shocks influence political participation, trust, or migration. This paper helps fill that gap by examining links between climate change, conflict, and social sustainability, with a focus on inclusion, resilience, cohesion, and legitimacy. Using secondary data from 2019–24, the study applies simple correlation-based methods to test three hypotheses on the nature, severity, and composition of these associations. The analysis combines multiple climate impact measures, new conflict classifications, recent social sustainability frameworks, and controls for population and geography. The results reveal strong correlations—not causation—between climate events and contexts of fragility, conflict, and violence. Climate impacts are most pronounced in both national and subnational conflict settings. The study also finds robust links between fragility, conflict, and violence and low levels of social sustainability, reflecting its role as both a driver and consequence of conflict. Some dimensions—such as violent events and insecurity—appear weaker in areas most affected by climate shocks. Two of the hypotheses are supported, and one remains inconclusive.
  • Publication
    The Macroeconomic Implications of Climate Change Impacts and Adaptation Options
    (Washington, DC: World Bank, 2025-05-29) Abalo, Kodzovi; Boehlert, Brent; Bui, Thanh; Burns, Andrew; Castillo, Diego; Chewpreecha, Unnada; Haider, Alexander; Hallegatte, Stephane; Jooste, Charl; McIsaac, Florent; Ruberl, Heather; Smet, Kim; Strzepek, Ken
    Estimating the macroeconomic implications of climate change impacts and adaptation options is a topic of intense research. This paper presents a framework in the World Bank's macrostructural model to assess climate-related damages. This approach has been used in many Country Climate and Development Reports, a World Bank diagnostic that identifies priorities to ensure continued development in spite of climate change and climate policy objectives. The methodology captures a set of impact channels through which climate change affects the economy by (1) connecting a set of biophysical models to the macroeconomic model and (2) exploring a set of development and climate scenarios. The paper summarizes the results for five countries, highlighting the sources and magnitudes of their vulnerability --- with estimated gross domestic product losses in 2050 exceeding 10 percent of gross domestic product in some countries and scenarios, although only a small set of impact channels is included. The paper also presents estimates of the macroeconomic gains from sector-level adaptation interventions, considering their upfront costs and avoided climate impacts and finding significant net gross domestic product gains from adaptation opportunities identified in the Country Climate and Development Reports. Finally, the paper discusses the limits of current modeling approaches, and their complementarity with empirical approaches based on historical data series. The integrated modeling approach proposed in this paper can inform policymakers as they make proactive decisions on climate change adaptation and resilience.
  • Publication
    Institutional Capacity for Policy Implementation: An Analytical Framework
    (Washington, DC: World Bank, 2026-01-07) Kim, Galileu; Kumar, Tanu; Ramalho, Rita; Russell, Stuart
    State capacity is an important prerequisite for policy implementation, yet at the country level it is difficult to measure, assess, and reform. This paper proposes a focus on institutional capacity: the ability of public institutions to implement the specific policy mandates for which they are responsible. Based on a review of existing literature, the paper defines the different dimensions that compose institutional capacity and groups them into two cross-cutting categories: organizational dimensions (personnel, financial resources, information systems, and management practices) and governance dimensions (transparency, independence, and accountability). The paper proposes measures for organizational and governance dimensions using existing data, shows intra-institutional variation of these measures within countries, and discusses how new data could be collected for better measurement of these concepts. Finally, the paper illustrates how the framework can be used to diagnose the sources of common problems related to weak policy implementation.
  • Publication
    South Africa’s Fragmented Cities: The Unequal Burden of Labor Market Frictions
    (Washington, DC: World Bank, 2026-01-08) Baez, Javier E.; Kshirsagar, Varun
    Using high-resolution administrative, census, and satellite data, this paper shows that South African cities are characterized by spatial mismatches between where people live and where jobs are located, relative to 20 global peers. Areas within 5 kilometers of commercial centers have 9,300 fewer residents per square kilometer than expected, which is 60 percent below the global median. Poor, dense neighborhoods are most affected. In Johannesburg, a 10-percentile increase in distance from the nearest business hub corresponds to a 3.7-percentile drop in asset wealth (a proxy of household wellbeing) and 4.9-percentile drop in employment. In Cape Town, the declines are 4.0 and 3.7 percentiles, respectively. Employment is 87 percent lower in the poorest decile than the richest in Johannesburg and 61 percent lower in Cape Town. These findings suggest that South Africa’s spatial organization of people and economic activity constrains agglomeration and reinforces inequality. This methodology provides a scalable and standardized data-driven framework to analyze spatial accessibility and agglomeration frictions in complex, data-constrained urban systems.
  • Publication
    Investment in Emerging and Developing Economies
    (Washington, DC: World Bank, 2026-01-07) Adarov, Amat; Kose, M. Ayhan; Vorisek, Dana
    The world faces a pressing challenge to meet key development objectives amid slowing growth and rising macroeconomic and geopolitical risks. With the number of job seekers rising rapidly, infrastructure shortfalls continuing to be large, and climate costs mounting, the case for a significant investment push has never been stronger. Yet the capacity to respond in many emerging markets and developing economies has eroded. Since the global financial crisis, investment growth has slowed to about half its pace in the 2000s, with both public and private investment weakening. Foreign direct investment inflows—a critical source of capital, technology, and managerial know-how—have also fallen sharply and become increasingly concentrated, leaving low-income countries with only a marginal share. The risks of further retrenchment are significant, as trade tensions, policy uncertainty, and elevated debt levels continue to weigh on investment. Reigniting momentum will require ambitious domestic reforms to strengthen institutions, rebuild macro-fiscal stability, and deepen trade and investment integration—the foundations of a supportive business climate. At the same time, international cooperation is indispensable. A renewed commitment to a predictable system of cross-border trade and investment flows, combined with scaled-up financial support and sustained technical assistance, is essential to help emerging markets and developing economies—especially low-income countries and economies in fragile and conflict situations—bridge financing gaps and implement the domestic reforms needed to restore investment as an engine of growth, jobs, and development.
Journal
Journal Volume
Journal Issue

Related items

Showing items related by metadata.

  • Publication
    Climate Cost Uncertainty, Retrofit Cost Uncertainty, and Infrastructure Closedown : A Framework for Analysis
    (World Bank, Washington, DC, 2010-02) Miller, Sebastian; Strand, Jon
    Large and energy-intensive infrastructure investments with long life times have substantial implications for climate policy. This study focuses on options to scale down energy consumption and carbon emissions now and in the future, and on the costs of doing so. Two ways carbon emissions can be reduced post-investment include retrofitting the infrastructure, or closing it down. Generally, the presence of bulky infrastructure investments makes it more costly to reduce emissions later. Moreover, when expected energy and environmental costs are continually rising, inherent biases in the selection processes for infrastructure investments lead to excessive energy intensity in such investments. Thus great care must be taken when choosing the energy intensity of the infrastructure at the time of investment. Simulations indicate that optimally exercising the retrofit option, when it is available, reduces ex ante expected energy consumption relative to the no-option case. Total energy plus retrofit costs can also be substantially reduced, the more so the larger is ex ante cost uncertainty. However, the availability of the retrofit option also leads to a more energy intensive initial infrastructure choice; this offsets some, but usually not all, of the gains from options for subsequent retrofitting.
  • Publication
    Energy Intensive Infrastructure Investments with Retrofits in Continuous Time : Effects of Uncertainty on Energy Use and Carbon Emissions
    (World Bank, Washington, DC, 2013-04) Framstad, Nils Christian; Strand, Jon
    Energy-intensive infrastructure may tie up fossil energy use and carbon emissions for a long time after investments, making the structure of such investments crucial for society. Much or most of the resulting carbon emissions can often be eliminated later, through a costly retrofit. This paper studies the simultaneous decision to invest in such infrastructure, and retrofit it later, in a model where future climate damages are uncertain and follow a geometric Brownian motion process with positive drift. It shows that greater uncertainty about climate cost (for given unconditional expected costs) then delays the retrofit decision by increasing the option value of waiting to invest. Higher energy intensity is also chosen for the initial infrastructure when uncertainty is greater. These decisions are efficient given that energy and carbon prices facing the decision maker are (globally) correct, but inefficient when they are lower, which is more typical. Greater uncertainty about future climate costs will then further increase lifetime carbon emissions from the infrastructure, related both to initial investments, and to too infrequent retrofits when this emissions level is already too high. An initially excessive climate gas emissions level is then likely to be worsened when volatility increases.
  • Publication
    Inertia in Infrastructure Development : Some Analytical Aspects, and Reasons for Inefficient Infrastructure Choices
    (2010-05-01) Strand, Jon
    This paper uses some simple conceptual models to draw out various implications of infrastructure investments with long lifetimes for the ability of societies to reduce their future greenhouse gas emissions. A broad range of such investments, related both to energy supply and demand systems, may commit societies to high and persistent levels of greenhouse gas emissions over time, that are difficult and costly to change once the investments have been sunk. There are, the author argues, several strong reasons to expect the greenhouse gas emissions embedded in such investments to be excessive. One is that infrastructure investment decisions tend to be made on the basis of (current and expected future) emissions prices that do not fully reflect the social costs of greenhouse gas emissions resulting from the investments. A second, related, set of reasons are excessive discounting of future project costs and benefits including future climate damages, and a too-short planning horizon for infrastructure investors. These issues are illustrated for two alternative cases of climate damages, namely with the possibility of a "climate catastrophe," and with a sustained increase in the marginal global damage cost of greenhouse gas emissions.
  • Publication
    FYR Macedonia Green Growth Country Assessment
    (Washington, DC, 2014-03) World Bank Group
    This green growth country assessment for Former Yugoslav Republic (FYR) Macedonia aims to define the outlines of a green growth path and the initial steps along that path. According to the World Bank's recent flagship report, green growth is 'growth that is efficient in its use of natural resources, clean in that it minimizes pollution and environmental impacts, and resilient in that it accounts for natural hazards and the role of environmental management and natural capital in preventing physical disasters.' While most countries might agree that such growth is a worthy goal, determining what a green growth path might mean for a particular country is a significant challenge. Green growth can be defined more precisely, as economic growth with more sustainable use of natural resources (minerals, water and clean air, and biodiversity), with proper consideration of mitigation of greenhouse gas emissions; with attention to adaptation to a changing climate; and with more focus on innovation and green jobs to enhance benefits flowing from the technological innovation and new industries spurred by a shift to green growth. This report takes a practical approach to identifying specific challenges and opportunities FYR Macedonia faces in building its green growth future and to present them in a form useful for decision makers. The report will address mitigation, adaptation, and the most immediately challenging resource sustainability issue, clean air. This report summarizes analytic work undertaken in sectors and on issues selected as critical for defining and understanding the green growth path of the country, with an emphasis on climate action. Chapters of the report start with an overview of the relevant challenges to green growth of climate adaptation and mitigation, and then set out the methodology applied the findings that emerged, and consequent recommendations. The nine sectors and issues that constitute the components of the green growth country assessment are represented in the opening graphic in this summary.
  • Publication
    Fiscal Implications of Climate Change
    (2012-01-01) Jones, Benjamin; Keen, Michael; Strand, Jon
    This paper provides a primer on the fiscal implications of climate change, in particular the policies for responding to it. Many of the complicated challenges that arise in limiting climate change (through greenhouse gas emissions mitigation), and in dealing with the effects that remain (through adaptation to climate change impacts), are of a fiscal nature. While mitigation has the potential to raise substantial public revenue (through charges on greenhouse gas emissions), adaptation largely leads to fiscal outlays. Policies may unduly favor public spending (on technological solutions to limit emissions, and on adaptation), over policies that lead to more public revenue being raised (emissions charges). The pervasive uncertainties that surround climate change make the design of proper policy responses even more complex. This applies especially to policies for mitigation of emissions, since agreement on and international enforcement of cooperative abatement policies are exceedingly difficult to achieve, and there is as yet no common view on how to compare nearer-term costs of mitigation to longer-term benefits.

Users also downloaded

Showing related downloaded files

  • Publication
    Recycling of Used Lead-Acid Batteries
    (Washington, DC: World Bank, 2022) von Stackelberg, Katherine; Williams, Pamela; Sánchez-Triana, Ernesto; Enriquez, Santiago
    This framework document provides a pragmatic framework for designing representative studies and developing uniform sampling guidelines to support estimates of morbidity that are explicitly linked to exposure to land-based contaminants from used lead acid battery recycling (ULAB) activities. A primary goal is to support environmental burden of disease evaluations, which attempt to attribute health outcomes to specific sources of pollution. The guidelines provide recommendations on the most appropriate and cost-effective sampling and analysis methods to ensure the collection of representative population-level data, sample size recommendations for each contaminant and environmental media, biological sampling data, household survey data, and health outcome data. These guidelines focus on small-scale ULABs that are known to generate significant amounts of lead waste through the smelting process, as well as other metals including arsenic and cadmium. A primary concern with lead exposures is the documented association with neurodevelopmental outcomes in children as demonstrated by statistically significantly reduced performance on a battery of cognitive tests. These associations are evident even in the youngest children, and toxicological and epidemiologic data indicate these effects have no threshold. Other potential exposures include arsenic and cadmium, and exposure to these contaminants is also associated with neurodevelopmental outcomes in children, as well as arsenicosis, bladder, lung, and skin cancers, and renal outcomes. The primary objective of this framework document is to guide research to assess the relationship between environmental contamination, exposures, and health outcomes related to a subset of contaminants originating from ULAB activities for particularly vulnerable populations (such as children) and the general population within a single household in the vicinity of ULAB sites in low- and middle-income countries. To achieve this objective, biomonitoring and health outcome data are linked to household survey and environmental data (for example, soil, dust, water, and agricultural products) at the individual level from an exposed population compared to individuals from an unexposed (reference) population. Data on exposures and health outcomes in the same individual across a representative set of individuals is required to support an understanding of the potential impact of ULAB activities on local populations. The guidelines can also assist in building local capacity to conduct environmental assessments following a consistent methodology to facilitate comparability across ULAB sites in different geographic areas. Sampling strategies and methods are prioritized given information needs, resource availability, and other constraints or considerations. The framework document includes a number of supporting appendixes that provide additional resources and references on relevant topics. Data obtained following these recommendations can be used to support consistent, comparable, and standardized community risk and health impact assessments at contaminated sites in low- and middle-income countries. These data can also be used to support economic analyses and risk management decision making for evaluating site cleanup and risk mitigation options in the most cost-effective and efficient manner. Following these recommendations will facilitate comparisons and meta-analyses across studies by standardizing data collection efforts at the community level.
  • Publication
    Global Economic Prospects, January 2025
    (Washington, DC: World Bank, 2025-01-16) World Bank
    Global growth is expected to hold steady at 2.7 percent in 2025-26. However, the global economy appears to be settling at a low growth rate that will be insufficient to foster sustained economic development—with the possibility of further headwinds from heightened policy uncertainty and adverse trade policy shifts, geopolitical tensions, persistent inflation, and climate-related natural disasters. Against this backdrop, emerging market and developing economies are set to enter the second quarter of the twenty-first century with per capita incomes on a trajectory that implies substantially slower catch-up toward advanced-economy living standards than they previously experienced. Without course corrections, most low-income countries are unlikely to graduate to middle-income status by the middle of the century. Policy action at both global and national levels is needed to foster a more favorable external environment, enhance macroeconomic stability, reduce structural constraints, address the effects of climate change, and thus accelerate long-term growth and development.
  • Publication
    Digital Africa
    (Washington, DC: World Bank, 2023-03-13) Begazo, Tania; Dutz, Mark Andrew; Blimpo, Moussa
    All African countries need better and more jobs for their growing populations. "Digital Africa: Technological Transformation for Jobs" shows that broader use of productivity-enhancing, digital technologies by enterprises and households is imperative to generate such jobs, including for lower-skilled people. At the same time, it can support not only countries’ short-term objective of postpandemic economic recovery but also their vision of economic transformation with more inclusive growth. These outcomes are not automatic, however. Mobile internet availability has increased throughout the continent in recent years, but Africa’s uptake gap is the highest in the world. Areas with at least 3G mobile internet service now cover 84 percent of Africa’s population, but only 22 percent uses such services. And the average African business lags in the use of smartphones and computers as well as more sophisticated digital technologies that catalyze further productivity gains. Two issues explain the usage gap: affordability of these new technologies and willingness to use them. For the 40 percent of Africans below the extreme poverty line, mobile data plans alone would cost one-third of their incomes—in addition to the price of access devices, apps, and electricity. Data plans for small- and medium-size businesses are also more expensive than in other regions. Moreover, shortcomings in the quality of internet services—and in the supply of attractive, skills-appropriate apps that promote entrepreneurship and raise earnings—dampen people’s willingness to use them. For those countries already using these technologies, the development payoffs are significant. New empirical studies for this report add to the rapidly growing evidence that mobile internet availability directly raises enterprise productivity, increases jobs, and reduces poverty throughout Africa. To realize these and other benefits more widely, Africa’s countries must implement complementary and mutually reinforcing policies to strengthen both consumers’ ability to pay and willingness to use digital technologies. These interventions must prioritize productive use to generate large numbers of inclusive jobs in a region poised to benefit from a massive, youthful workforce—one projected to become the world’s largest by the end of this century.
  • Publication
    The Economics of Water Scarcity in the Middle East and North Africa: Institutional Solutions
    (Washington, DC : World Bank, 2023-04-26) de Waal, Dominick; Khemani, Stuti; Barone, Andrea; Borgomeo, Edoardo
    Despite massive infrastructure investments, countries in the Middle East and North Africa (MENA) region continue to face unprecedented water scarcity due to climate change, population growth, and socioeconomic development. Current policy regimes for managing water across competing needs are primarily determined by state control of large infrastructure. Policy makers across the region understand the unsustainability of water allocations and that increasing investments in new infrastructure and technologies to increase water supply place a growing financial burden on governments. However, standard solutions for demand management—reallocating water to higher value uses, reducing waste, and increasing tariffs—pose difficult political dilemmas that, more often than not, are left unresolved. Without institutional reform, the region will likely remain in water distress even with increased financing for water sector infrastructure.The Economics of Water Scarcity in the Middle East and North Africa: Institutional Solutions confronts the persistence and severity of water scarcity in MENA. The report draws on the tools of public economics to address two crucial challenges facing states in MENA: lack of legitimacy and trust. Evidence from the World Values Survey shows that people in the region believe that a key role of government is to keep prices down and that governments are reluctant to raise tariffs because of the risk of widespread protests. Instead of avoiding the “politically sensitive” issue of water scarcity, this report argues that reform leaders and their external partners can reform national water institutions and draw on local political contestation to establish a new social contract. The crisis and emotive power of water in the region can be used to bolster legitimacy and trust and build a sustainable, inclusive, thriving economy that is resilient to climate change.
  • Publication
    A New State of Mind
    (Washington, DC : World Bank, 2022-10-05) Belhaj, Ferid; Gatti, Roberta; Lederman, Daniel; Sergenti, Ernest John; Lotfi, Rana; Mousa, Mennatallah Emam; Assem, Hoda
    The MENA region is facing important vulnerabilities, which the current crises—first the pandemic, then the war in Ukraine—have exacerbated. Prices of food and energy are higher, hurting the most vulnerable, and rising interest rates from the global tightening of monetary policy are making debt service more burdensome. Part I explores some of the resulting vulnerabilities for MENA. MENA countries are facing diverging paths for future growth. Oil Exporters have seen windfall increases in state revenues from the rise in hydrocarbon prices, while oil importers face heightened stress and risk—from higher import bills, especially for food and energy, and the depreciation of local currencies in some countries. Part II of this report argues that poor governance, and, in particular, the lack of government transparency and accountability, is at the root of the region’s development failings—including low growth, exclusion of the most disadvantaged and women, and overuse of such precious natural resources as land and water.