33,454 research outputs found

    Energy issues in the developing world

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    In 1986 and 1987 the lower oil prices called into question many of the fundamental assumptions that were the stock in trade of energy experts during the previous ten years. This document is a collection of papers representing responses to concerns prepared by current and former World Bank staff. Although these papers raise a variety of different concerns, a common theme that runs throughout the paper is the need to continue the pursuit of efficiency goals in the energy sector. The developing world still needs large amounts of capital to meet its ever-expanding energy requirements. These capital requirements will be a significant part of most countries'total investment plan. Given the problems of debt and public revenues, the report concludes that the pursuit of efficiency is just as important under lower fuel prices as it is under rising fuel prices.Power&Energy Conversion,Urban Environment,Environmental Economics&Policies,Energy Demand,Energy and Environment

    Decarbonizing development: three steps to a zero-carbon future

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    This report lays out three steps for a smooth transition to a zero-carbon future and provides data, examples and policy advice to help countries makes the shift. Overview Getting to zero net emissions and stabilizing climate change starts with planning for the long-term future and not stopping at short-term goals. It means getting prices right as part of a broad policy package that can trigger changes in both investments and behaviors, and it requires smoothing the transition for those most affected. A new World Bank report walks policymakers through those three steps with data, examples and policy advice to help put countries on a path to decarbonizing their development in a smooth and orderly way. The solutions exist, and they are affordable – if governments take action today, the report says

    CCS Networks for the UK: Benefits, Impacts and Regulation

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    What benefits might be offered by developing well planned CCS networks? A review of the drivers for and barriers to the coherent development of CCS networks in the UK is used to synthesise a limited set of possible network topologies. The benefits offered by each topology for UK carbon dioxide and other atmospheric emissions are estimated. Other potential benefits are considered qualitatively, and a range of uncertainties identified. The complexity of CCS networks means that addressing these uncertainties is a challenging task, and the need for a whole systems approach is evaluated. Finally, implications for CCS regulation and policy are highlighted

    Electricity and combined heat and power from municipal solid waste : theoretically optimal investment decision time and emissions trading implications

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    Waste management has become a great social concern for modern societies. Landfill emissions have been identified among the major contributors of global warming and climate changes with significant impact in national economies. The energy industry constitutes an additional greenhouse gas emitter, while at the same time it is characterized by significant costs and uncertain fuel prices. The above implications have triggered different policies and measures worldwide to address the management of municipal solid wastes on the one hand and the impacts from energy production on the other. Emerging methods of energy recovery from waste may address both concerns simultaneously. In this work a comparative study of co-generation investments based on municipal solid waste is presented, focusing on the evolution of their economical performance over time. A real-options algorithm has been adopted investigating different options of energy recovery from waste: incineration, gasification and landfill biogas exploitation. The financial contributors are identified and the impact of greenhouse gas trading is analysed in terms of financial yields, considering landfilling as the baseline scenario. The results indicate an advantage of combined heat and power over solely electricity production. Gasification, has failed in some European installations. Incineration on the other hand, proves to be more attractive than the competing alternatives, mainly due to its higher power production efficiency, lower investment costs and lower emission rates. Although these characteristics may not drastically change over time, either immediate or irreversible investment decisions might be reconsidered under the current selling prices of heat, power and CO2 allowances

    ECONOMIC Potential of Renewable Energy in Vietnam's Power Sector

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    A bottom-up Integrated Resource Planning model is used to examine the economic potential of renewable energy in Vietnam’s power sector. In a baseline scenario without renewables, coal provides 44% of electricity generated from 2010 to 2030. The use of renewables could reduce that figure to 39%, as well as decrease the sector’s cumulative emission of CO2 by 8%, SO2 by 3%, and NOx by 4%. In addition,renewables could avoid installing 4.4GW in fossil fuel generating capacity, conserve domestic coal,decrease coal and gases imports, improving energy independence and security. Wind could become cost-competitive assuming high but plausible on fossil fuel prices, if the cost of the technology falls to 900 US$/kW

    Energy cooperation in Southern Africa: What role for Norway?

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    This Working Paper contains a full report from a Seminar on Regional Energy Co-operation, Luanda, 12-14 February 2002. Norwegian involvement in the energy sector in Southern Africa is considerable. Energy is a major area in Norwegian co-operation and includes a number of countries within SADC. There has been rapid change in the sector, which has moved from being an infrastructure sector to a commodity production sector. Also, the ongoing institutional changes in SADC will have an effect on its relation to energy. The donors' role must change accordingly. Important objectives of the seminar were to discuss the changes in the sector in the region and to improve the level of information in order to make better decisions.

    Policies and Measures to Mitigate Potential Environmental Impacts of Cross Border Infrastructure Projects in Asia

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    While bringing positive impacts and benefits, cross-border infrastructure projects face additional challenges relative to national projects. Moreover, such projects involve a variety of technical, regulatory, institutional, and legal factors, and their obstacles constrain the development of cross-border infrastructure projects. This paper argues that proper technical specifications and well-functioning regulatory, institutional and legislative/legal frameworks with clearer lines of oversight are crucial to getting such projects off the ground in the first place and to ensure that they operate properly and reliably while minimizing their environmental impacts. It is pointed out that many issues in theses areas need to be addressed at the national level. The paper concludes that such domestic efforts, coupled with regional frameworks and arrangements wherever necessary, will promote the further development of cross-border infrastructure projects.asia cross-border infrastructure; environmental impact; asia regional integration

    Convex Relaxations for Gas Expansion Planning

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    Expansion of natural gas networks is a critical process involving substantial capital expenditures with complex decision-support requirements. Given the non-convex nature of gas transmission constraints, global optimality and infeasibility guarantees can only be offered by global optimisation approaches. Unfortunately, state-of-the-art global optimisation solvers are unable to scale up to real-world size instances. In this study, we present a convex mixed-integer second-order cone relaxation for the gas expansion planning problem under steady-state conditions. The underlying model offers tight lower bounds with high computational efficiency. In addition, the optimal solution of the relaxation can often be used to derive high-quality solutions to the original problem, leading to provably tight optimality gaps and, in some cases, global optimal soluutions. The convex relaxation is based on a few key ideas, including the introduction of flux direction variables, exact McCormick relaxations, on/off constraints, and integer cuts. Numerical experiments are conducted on the traditional Belgian gas network, as well as other real larger networks. The results demonstrate both the accuracy and computational speed of the relaxation and its ability to produce high-quality solutions
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