Optimal composite generation and transmission expansion planning considering renewable energy sources, harmonics and system reliability

Abstract: Electricity generation via conventional generating systems is faced with challenges such as emission of greenhouse gases, uncertainty associated with fossil fuel prices and incidences of failure or outages of generation. This dissertation proposes the incorporation of largescale Renewable Energy Sources (RES) into power systems in order to reduce the challenges associated with conventional generating systems. The first part of this dissertation investigates the contribution of RES and economic incentives to the composite generation and transmission expansion planning procedure. A Mixed Integer Quadratic Programming (MIQP) model based on composite generation and transmission expansion planning is proposed for solving a multi-objective mathematical optimization problem which includes minimization of the investment costs, operational costs, emissions as well as the maximization of economic incentives. Obtained results, when compared with previous works indicate that encouraging economic incentives improves the effective utilization of offshore wind farms and consequently reduces the emissions from conventional generating units....D.Phil. (Electrical and Electronic Engineering

Economics of Electricity Battery Storage

This chapter deals with the challenges and opportunities of energy storage, with a specific focus on the economics of batteries for storing electricity in the framework of the current energy transition. Storage technologies include a variety of solutions that have been used for different grid services, including frequency control, load following, and uninterrupted power supply. A recent interest is being triggered by the increasing grid balance requirements to integrate variable renewable sources and distributed generation. In parallel, lithium-ion batteries are experiencing a strong market expansion driven by an uptake of electric vehicles worldwide, which is leading to a strong decrease of production costs, making Li-ion batteries an attractive solution also for stationary storage applications

The Palgrave Handbook of International Energy Economics

This open access handbook is distinguished by its emphasis on international energy, rather than domestic energy policies or international geopolitic aspects. Addressing key topics such as energy production and distribution, renewables and corporate energy structures, alongside global energy trends, regional case studies and emerging areas such as the digitalization of energy and energy transition, this handbook provides a major new contribution to the field of international energy economics. Written by academics, practitioners and policy-makers, this handbook is a valuable and timely addition to the literature on international energy economics. This book was published open access with the support of Eni

Investment Incentives: A Survey of Policies and Approaches for Sustainable Investment

In order to effectively harness public funds and leverage them to support sustainable development, governments have to be strategic in their use of capital. This means ensuring that government funds are used to help compensate for market failures that lead to the underproduction of public goods. It also means ensuring that government funds are not used to provide redundant support for private actors and subsidize environmentally or socially harmful activities. To achieve these policy objectives, governments need to be careful and deliberate in their use of investment incentives. Investment incentives, which may be defined (broadly) as nonmarket advantages used to influence the behavior of an economic actor, can represent significant costs to governments. These costs have the potential to generate various public benefits such as increased employment, development and dissemination of environmentally and socially sound technology, and other positive externalities. However, investment incentives are not often tailored or implemented in ways that ensure they produce the desired outcomes, or they do so at public costs that are less than their public benefits. Investment incentives have the potential to advance sustainable development but can also be misused, undermining their goals, and wasting public funds. This report provides an overview of investment incentives, their policy implications, and strategies for understanding and managing their costs and benefits

On Techno-economic Evaluation of Wind-based DG

The growing interest in small-scale electricity generation located near customers, known as Distributed Generation (DG), is driven primarily by emerging technologies, environmental regulations and concerns, electricity market restructuring, and growing customer demand for increased quality and reliability of the electricity supply. Wind turbines are one of the renewable DG technologies that have become an important source of electricity in many parts of the world. Wind power can be used in many places to provide a viable solution to rising demand, energy security and independence, and climate change mitigation. This research aims broadly at facilitating the integration of wind-based DG without jeopardizing the system’s economics and reliability. To achieve this goal, the thesis tackles wind power from three perspectives: those of the policy maker, the investor, and the system operator. Generally, the economic viability of a project is determined within the framework of relevant policies. Therefore, these policies influence the decisions of potential investors in wind power. From this perspective, chapters 3 and 4 investigate the influence of policies on the economic viability of wind-based DG projects. In chapter 3, the role of Ontario’s taxation and incentive policies in the economic viability of wind-based DG projects is investigated. In this study, the effects of provincial income taxes, capital cost allowances, property taxes, and relevant federal incentives are considered. Net Present Value (NPV) and Internal Rate of Return (IRR) for different scenarios are used to assess the project’s viability under the Ontario Standard Offer Program (SOP) for wind power. In chapter 4, the thesis proposes the use of wind power as a source of electricity in a new city being developed in the Duqm area of Oman, where no policies supporting renewable energy exist. The study shows that the cost of electricity produced by wind turbines is higher than that of the existing generation system, due to the subsidized prices of domestically available natural gas. However, given high international natural gas prices, the country’s long-term Liquefied Natural Gas (LNG) export obligations, and the expansion of natural gas-based industries, investments in wind power in Duqm can be justified. A feed-in tariff and capital cost allowance policies are recommended to facilitate investments in this sector. From a wind-based DG investor’s perspective, the optimal selection of wind turbines can make wind power more economical, as illustrated in chapters 5 and 6. In chapter 5, the thesis presents a new generic model for Capacity Factor (CF) estimation using wind speed characteristics at any site and the power performance curve parameters of any pitch-regulated wind turbine. Compared to the existing model, the proposed formulation is simpler and results in more accurate CF estimation. CF models can be used by wind-based DG investors for optimal turbine-site matching applications. However, in chapter 6, the thesis demonstrates that using CF models as the sole basis for turbine-site matching applications tends to produce results that are biased towards higher towers but do not include the associated costs. Therefore, a novel formulation for the turbine-site matching problem, based on a modified CF formulation that does include turbine tower height, is introduced in chapter 6. The proposed universal Turbine-Site Matching Index (TSMI) also includes the effects of turbine rated power and tower height on the initial capital cost of wind turbines. Chapter 7 tackles wind power from a power system operator’s perspective. Despite wind power benefits, the effects of its intermittent nature on power systems need to be carefully examined as penetration levels increase. In this chapter, the thesis investigates the effects of different temporal wind profiles on the scheduling costs of thermal generation units. Two profiles are considered: synoptic-dominated and diurnal-dominated variations of aggregated wind power. To simulate wind profile impacts, a linear mixed-integer unit commitment problem is formulated in a GAMS environment. The uncertainty associated with wind power is represented using a chance constrained formulation. The simulation results illustrate the significant impacts of different wind profiles on fuel saving benefits, startup costs, and wind power curtailments. In addition, the results demonstrate the importance of the wide geographical dispersion of wind power production facilities to minimize the impacts of network constraints on the value of the harvested wind energy and the amount of curtailed energy

Techno-economics of algae production in the Arabian Peninsula

The Arabian Peninsula's advantageous climate, availability of non-arable land, access to seawater and CO2-rich flue gas, make it an attractive location for microalgae biomass production. Despite these promising aspects, the region has seen very few studies into the commercial feasibility of algae-based value chains. This work aims to address this gap through a techno-economic feasibility study of algae biomass production costs, comparing different photobioreactor types, locations, and production scales. Flat panel and raceway pond cultivation systems were found to be the most economically attractive cultivation systems, with biomass production costs as low as 2.9 €·kg−1. Potential cost reductions of up to 42.5% and 25% could be accomplished with improvements in photosynthetic efficiencies and increased culture temperatures, respectively. As of such, efforts to source local thermo- and photo- tolerant strains could be the key to unlock the potential of the region for algae commercialization, linking into food, feed and nutraceutical industries.The authors would like to thank Tommaso de Santis, Probir Das, Mahmoud Taher, and the QDVC team for their support. This work was sponsored by QDVC and Qatar University [Project: QUEX-CAS-QDVC-14/15-7]. Open Access funding was provided by the Qatar National Library

Economic efficiencies of the energy flows from the primary resource suppliers to the electric load centers

The economic efficiency of the electric energy system depends not only on the performance of the electric generation and transmission subsystems, but also on the ability to produce and transport the various forms of primary energy, particularly coal and natural gas. However, electric power systems have traditionally been developed and operated without a conscious awareness of the energy system-wide implications, namely the consideration of the integrated dynamics with the fuel markets and infrastructures. This has been partly due to the difficulty of formulating models capable of analyzing the large-scale, complex, time-dependent, and highly interconnected behavior of the integrated energy system. In this dissertation, a novel approach for studying the movements of coal, natural gas, and electricity in an integrated fashion is presented. Conceptually, the model developed is a simplified representation of the national infrastructures, structured as a generalized, multiperiod network composed of nodes and arcs. Under this formulation, fuel supply and electricity demand nodes are connected via a transportation network and the model is solved for the most efficient allocation of quantities and corresponding prices for the mutual benefits of all. The synergistic action of economic, physical, and environmental constraints produces the optimal pattern of energy flows. Key data elements are derived from various publicly available sources, including publications from the Energy Information Administration, survey forms administered by the Federal Energy Regulatory Commission, and databases maintained by the Environmental Protection Agency. The results of different test cases are analyzed to demonstrate that the decentralized level of decision-making combined with imperfect competition may be preventing the realization of potential cost savings. An overall optimization at the national level shows that there are opportunities to better utilize low cost generators, curtailing usage of higher cost units and increasing electric power trade, which would ultimately allow customers to benefit from lower electricity prices. In summary, the model developed is a simulation tool that helps build a better understanding of the complex dynamics and interdependencies of the coal, natural gas, and electricity networks. It enables public and private decision makers to carry out comprehensive analyses of a wide range of issues related to the energy sector, such as strategic planning, economic impact assessment, and the effects of different regulatory regimes

Renewable energy auctions: Status and trends beyond price

December 2019 ISBN : 978-92-9260-190-4 Download As the renewable energy sector matures, policies must be adapted to reflect changing market conditions. With the increasing use of auctions, policy makers seek to procure renewables-based electricity at the lowest price and also fulfil socio-economic objectives. This report outlines the latest research on auctions by the International Renewable Energy Agency (IRENA), with a focus on market developments in 2017-2018

EXPLAINING RENEWABLE ENERGY TRANSITION THROUGH HUMAN CAPITAL ANALYSIS IN THE UNITED ARAB EMIRATES

Concerns over climate change, energy security, and the provision of subsidies to utilities motivated global investments in renewable energy during the early 2000s. Recently, geographers have adopted political economy approaches to better understand the underlying motives and rationale for renewable energy transition. The advent of large-scale renewable energy investment in oil-producing rentier states has prompted theorizations concerning the role of renewable energy in political reproduction of the state through neo-rentierism. To test these predictions/claims, this dissertation examines the human capital dimensions of energy transition in a rentier state – the United Arab Emirates (UAE) – to determine if renewable power represents a reproduction of the rentier state. Countering this claim is the idea the UAE can leverage its advanced oil knowledge to capture value and stimulate local capacity in the emerging renewable power industry. The research relied on a survey instrument designed to elicit important information concerning the human capital elements of renewable energy development and collaboration with state-based actors (n= 51) and interviews of key actors (n=24) in the UAE’s renewables industry to expand upon survey responses. The findings indicate that (1) a global production network (GPN) for photovoltaic (PV) and concentrated solar power (CSP) industries in the UAE shows the centrality of the state as the primary actor in the solar energy industry; (2) market pressures, firm decision making, and individual preference-seeking create local labor markets oriented around the attraction of human capital dimensions from abroad; and (3) firm perspectives on renewable energy transition and collaboration with the state reveal the complex, place-based understandings of renewable energy transition through economic understandings, national identity construction, and technical advances. The findings contribute to geographical literatures in human capital development, management, and mobility as well as debates concerning economic development, diversification, and renewable energies

Regional integration among developing countries : opportunities, obstacles and options.

Wirtschaftsunion; Entwicklungsländer;