The roles and potentials of renewable energy in less-developed economies

Increasing the renewable energy share in national energy mix remains one of the major energy policy goals across many economies. This paper assesses the roles and potentials of renewable energy sources in less-developed economies while citing Nepal as an example. Renewable energy has a significant role to play in the electrification of rural areas in developing economies and contribute towards sustainable development. Realizing full potentials of renewable, however, requires addressing both the associated demand-side and supply–side constraints. Innovative subsidies and tax incentives, adequate entrepreneurial support, strengthening institutional arrangement and promoting local community-based organizations such as the cooperatives are the necessary factors in promoting the green technologies in countries like Nepal. International factors such as large scale investment and adequate technology transfer are equally crucial to create a rapid spread and increase affordability of decentralised renewable energy technologies in less-developed economies.renewable; electrification; research and development

Energy efficiency in transition: do market-oriented economic reforms matter?

Global climate change and security of supply concerns pose significant challenges for sustainable development as well as the need to improve energy efficiency in transition and developing economies. Meanwhile, economic theory suggests that market-based economic policies and reforms are crucial for accelerating energy efficiency in developing and transition countries. Hence, this paper analyses the impacts of several market-oriented economic reforms on energy efficiency in the transition countries. The transition countries experienced a rapid marketization process that saw their economies transformed from central planning towards more market based economies since the early 1990s. The econometric results from the bias corrected fixed-effect analysis (LSDVC) suggest that both large and small scale privatisation process has been the sole driver of energy efficiency in transition countries. However, the lack of suitable institutions to support overall-market reforms implies that other market based economic reforms remain ineffective in improving energy efficiency in transition countries.market reforms, energy efficiency, transition countries, institutions

From state to market : essays on electricity sector reforms

The 1980s marked the beginning of market driven reforms in the electricity sector based on the standard textbook model. More than half of the economies around the world have initiated power sector reforms since late 1980s irrespective of the sector size, resource endowments, institutional capacity and economic development. Hence, this thesis qualitatively and quantitatively assesses the process and outcomes of market-based reforms evolving the electricity sector across the developing, transition and developed economies where reforms are on-going at various stages. Deriving relevant and feasible reform options and policy for the electricity sector based on the lessons learnt after considering more than two decades of reforms remains the major contribution of this thesis. Chapter one is the introductory chapter and provides an outline of the motivation and context of the thesis. Chapter two is a literature review of the experiences to date with the performance of electricity reforms across the reforming countries. The chapter identifies the knowledge gaps in the literature and sets the scene for the three substantial chapters of the thesis to follow. The third chapter assesses the issues and options in reforming small electricity sectors considering the twin complicating factors of political instability and increasing electricity demand. The reform in the small electricity sector of Nepal is cited as a specific case. Chapter four empirically investigates the often poorly explored link between power sector reforms and wider institutional reforms in the economy across different groups of transition countries. The transition countries include the countries of Central and Eastern Europe and the Former Soviet Union. Chapter five examines the degree of market integration between the relatively small all-island Irish electricity market and other wholesale electricity markets in Europe. The chapter focuses on the role of interconnections and increased cross-border trade of electricity in the creation of an integrated market for electricity in Europe. Chapter six concludes the thesis by highlighting the policy implications and areas for future research. The chapter establishes that electricity sector reform is prone to chronic political, market and regulatory failures in many reforming countries

Parafermion stabilizer codes

We define and study parafermion stabilizer codes which can be viewed as generalizations of Kitaev's one dimensional model of unpaired Majorana fermions. Parafermion stabilizer codes can protect against low-weight errors acting on a small subset of parafermion modes in analogy to qudit stabilizer codes. Examples of several smallest parafermion stabilizer codes are given. A locality preserving embedding of qudit operators into parafermion operators is established which allows one to map known qudit stabilizer codes to parafermion codes. We also present a local 2D parafermion construction that combines topological protection of Kitaev's toric code with additional protection relying on parity conservation

Boundary twists, instabilities, and creation of skyrmions and antiskyrmions

We formulate and study the general boundary conditions dictating the magnetization profile in the vicinity of an interface between magnets with dissimilar properties. Boundary twists in the vicinity of an edge due to Dzyaloshinskii-Moriya interactions have been first discussed in [Wilson et al., Phys. Rev. B 88, 214420 (2013)] and in [Rohart and Thiaville, Phys. Rev. B 88, 184422 (2013)]. We show that in general case the boundary conditions lead to the magnetization profile corresponding to the N\'eel, Bloch, or intermediate twist. We explore how such twists can be utilized for creation of skyrmions and antiskyrmions, e.g., in a view of magnetic memory applications. To this end, we study various scenarios how skyrmions and antiskyrmions can be created from interface magnetization twists due to local instabilities. We also show that a judicious choice of Dzyaloshinskii-Moriya tensor (hence a carefully designed material) can lead to local instabilities generating certain types of skyrmions or antiskyrmions. The local instabilities are shown to appear in solutions of the Bogoliubov-de-Gennes equations describing ellipticity of magnon modes bound to interfaces. In one considered scenario, a skyrmion-antiskyrmion pair can be created due to instabilities at an interface between materials with properly engineered Dzyaloshinskii-Moriya interactions. We use micromagnetics simulations to confirm our analytical predictions.Comment: 9 pages, 8 figure

Caught Between Theory and Practice: Government, Market and Regulatory Failures in Electricity

The world-wide electricity sector reforms of the early 1990s have revealed the complexities of introducing market driven reforms and making them work in network and infrastructure industries. This paper re-flects on the experience to date with the process and outcomes of market-based electricity reforms in less-developed, transition and developed economies. Evidence suggests similar problems facing the electricity sector of these countries though the contexts vary significantly. Many developing and developed economies continue to have investment inadequacy concerns and the need to balance economic efficiency, sustainability and social equity after more than two decades of experience with reforms. We also use case studies of three selected countries that in many respects represent the current state of the reform though they are rarely examined. Nepal, Belarus and Ireland are chosen as country-specific case studies for this purpose. We conclude that the changing dynamics of the electricity supply industry (ESI) and policy objectives imply that reforms evolve continuously and thus remain work in progress making their success or failure a complex function of micro, macro, and institutional factors

Electricity spot trading in Germany: Price formation and convergence

This paper analyses the price developments between the European Energy Exchange EEX and OTC wholesale spot markets in Germany using a linear state space model based on Kalman filter analysis. Our results suggest increasingly integrated German wholesale spot markets for electricity. The results remain the same when correcting for the influence of the introduction of the emissions allowance trading

Electricity spot trading in Germany: price formation and convergence

This paper analyses the price developments between the European Energy Exchange EEX and OTC wholesale spot markets in Germany using a linear state space model based on Kalman filter analysis. Our results suggest increasingly integrated German wholesale spot markets for electricity. The results remain the same when correcting for the influence of the introduction of the emissions allowance trading

Security of the Europena Electricity Systems: Conceptualizing the ssessment Criteria and Core Indicators

The electricity systems have a central role to play in the transition towards a low carbon economy and integration of renewable energy sources in the European Union. However, the European electricity networks face a diverse set of existing and new risks that can hamper the energy security of member countries. This paper aims to qualitatively and quantitatively assess these risks given the changing operating framework of the industry characterised by market liberalization and network interconnectedness among the EU members. Within this context, we primarily focus on the risks from exceptional events and threats to the European electricity systems. An ex-ante risk assessment matrix is proposed to gauge the network risks and take prevention measures against them. Such assessment can be a useful approach for policymakers and practitioners amidst the existing ex-post quality of supply performance standards and indicators. Our analysis suggests that economic risks pose the most serious and challenging risks to the evolving European electricity system