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| 1 |
ID:
171364
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| Summary/Abstract |
Realizing the full potential of a smart grid is contingent on the residential users’ acceptance of new technologies and the behavioural changes that will follow their implementation. Thus, the present research attempted to gain an insight into the factors that drive residential electricity consumers, particularly those with low income, towards or away from demand side management and distributed energy resources. The results of a consumer survey of 207 Japanese households revealed that there is a clear correlation between low-household income and the willingness of the respondents to reduce their energy expenditures. In contrast, the fear of the perceived additional cost required to implement these technologies, and the belief that consumers have inadequate information or support from the utility company, prevents them from adopting new technologies. Further, the results of a comparative analysis indicate that the reputation of the utility company is higher among smart grid users than traditional electricity consumers. The K-means clustering algorithm and hierarchical cluster analysis indicated that younger and poorer members of the society faced more barriers than middle age wealthier groups. The authors maintain that the electricity utilities thus need to develop a range of measures to engage residential consumers with heterogeneous socio-economic characteristics.
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| 2 |
ID:
162293
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| Summary/Abstract |
The technical and financial influences that shape customer investment in behind-the-meter PV and battery systems, provide the means to forecast and quantify customer energy transitions. By utilising techno-economic scenario analysis, this research assists policymakers to understand the impacts of their decisions on future energy market relationships between the customer and utilities. Two case studies are presented, firstly to evaluate the influence of annual increases in usage charges, and secondly the level of feed-in tariff compensation on customer PV and battery investment over a 15-year forecast period located in Perth, Australia. The findings indicate that even without annual increases in usage charges, the falling installation costs of PV and battery technologies will make customer PV-battery systems financially viable within the 15-year forecast period. Additionally, the removal of the feed-in tariff leads to greater reductions in eventual grid consumption. By the end of the forecast period, customer PV-battery systems with the highest financial performance are able to reduce grid consumption above 90% resulting in significant energy resources being transferred out of the energy market. This necessitates the market integration of customer energy resources and provides an opportunity to leverage a combination of customer and utility energy resources for the renewable energy transition.
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| 3 |
ID:
188559
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| Summary/Abstract |
Load management is the practice of adjusting demand in an electricity system through remote control of—or incentives to operate—grid-edge technologies in alignment with system goals. Although load management functions as a distributed energy resource (DER) and can play a critical role in cost-effective deployment of renewable energy toward economy-wide deep decarbonization, there has been little energy transitions research on how electric grid actors initiate and manage DER deployments over time. We use interviews and archival research to compare case studies of electric cooperatives in the United States, tracing how cooperatives deployed more than 600,000 load management devices over 70 years. Using polycentricism as a frame, we find that DER deployments comprise common pool resources that are strategically created and negotiated across scales by different centers of decision-making over time. Our findings rebut the assumption that DER deployments are solely the result of policies or markets, showing that DER deployments are instead polycentric acts of cooperation and competition. DER deployments require diverse intermediaries within and across levels of deployment, from policy to users, over many years. We show that polycentric governance that builds vertical coordination across local and regional actors can support broad, deep, and distributed energy transition.
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| 4 |
ID:
186463
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| Summary/Abstract |
Future retail electricity markets require development to accelerate the net-zero carbon transition. Adopting a customer-centric approach to market design is necessary to fully utilise smart grid technologies. In this perspective we postulate that empowering energy consumers to become an integral component of the smart grid will lead to heightened renewable energy deployment and network flexibility.
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| 5 |
ID:
125510
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| Publication |
2013.
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| Summary/Abstract |
In this study a mixed integer linear programming (MILP) model is created for the design (i.e. technology selection, unit sizing, unit location, and distribution network structure) of a distributed energy system that meets the electricity and heating demands of a cluster of commercial and residential buildings while minimising annual investment and operating cost. The model is used to analyse the economic and environmental impacts of distributed energy systems at the neighbourhood scale in comparison to conventional centralised energy generation systems. Additionally, the influence of energy subsidies, such as the UK's Renewable Heat Incentives and Feed in Tariffs, is analysed to determine if they have the desired effect of increasing the economic competitiveness of renewable energy systems.
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| 6 |
ID:
163535
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| Summary/Abstract |
Thanks to new technological advancements and EU policy impulse, distributed energy resources (DER) are poised to become a viable alternative to conventional electricity generation for the provision of balancing services to transmission system operators. In this paper we show that the design variables that affect DER access to and participation in the organized balancing market include different features of auction configuration as well as a number of formal, administrative and technical aspects of market design. In a comparative case study of the balancing markets in Austria, Germany and the Netherlands, we determine the extent to which a given market design effectively facilitates DER participation. To structure this analysis, we designed an assessment framework that provides a comprehensive tool for the assessment of balancing markets in Europe vis-Ã -vis DER participation. Our results show that flexible pooling conditions, a higher bidding frequency and product resolution, and the authorization of non-precontracted bids, among others, can significantly ease DER integration in the market. Different design variables, however, can enhance or neutralize each other's effects, so their interrelations need to be taken into account in order to achieve an improved and harmonized balancing market design.
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| 7 |
ID:
150721
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| Summary/Abstract |
Customers, utilities, and society can gain many benefits from distributed energy resources (DERs), including plug-in hybrid electric vehicles (PHEVs). Using battery on PHEV to arbitrage electricity price is one of the potential benefits to PHEV owners. There is, however, disagreement on the magnitude of such profit. This study uses a stochastic optimization model to estimate the potential profit from electricity price arbitrage of two types of PHEVs (PHEV-10, and PHEV-40) under three scenarios with variant electricity tariff and PHEV owners over a five-year period.
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| 8 |
ID:
183043
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| Summary/Abstract |
The rapid integration of renewable energy sources and demand-side participation has changed how electrical energy is being purchased, transmitted, distributed, or even consumed. It has opened new opportunities for the Indian power sector to redefine its existing operational and business models to cope with the unique challenges and follow an approach that maximizes social welfare across all energy supply chain segments. This journey will have significant impacts on the Distribution companies (DISCOMs). The anticipated segregation of wire and supply business would bring more operational efficiency in the distribution sector. The subsequent entry of retailers will handle the supply business of electricity. A new entity is likely to emerge as Distribution System Operator (DSO), providing network access, grid services and enabling consumer market participation. The emergence of DSO is decisive in achieving better socioeconomic and environmental benefits. The idea of DSO is still at the conceptual level in India. In this paper, an attempt has been made to present the DSO definition, highlight its need, enlist various DSO functions, and suggest possible DSO creation options. DSO's few competitive market models are examined from the Indian perspective, which will engage all stakeholders actively and ensure the reliable and efficient operation of the overall Indian power grid.
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| 9 |
ID:
166476
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| Summary/Abstract |
Distributed energy resource technologies (DERs) allow consumers to generate, trade, reduce, and shift their electricity consumption, largely bypassing traditional utilities. DERs can reduce consumer reliance on the grid, and in the most extreme scenario self-sufficient consumers could disconnect from the grid and avoid all external charges. However, since most DERs delivers energy, but not reliable capacity, it would be in the interests of most of these consumers to stay connected to the networks, in the event their system fails. Such a ‘pay as you go’ price scheme would not reflect the opportunity cost of electricity firms' sudden idle infrastructure though
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| 10 |
ID:
128350
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2014.
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| Summary/Abstract |
Microgrids can provide an avenue for increasing the amount of distributed generation (DG) and delivery of electricity, where control is more dispersed and quality of service is locally tailored to end-use requirements, with applications from military bases to campuses to commercial office buildings. Many studies have been done to date on microgrid technology and operations, but fewer studies exist on demonstration programs and commercial microgrid development. As China prepares to launch the largest microgrid demonstration program in the world, we review progress made by demonstration programs across Europe, Asia, and the Americas as well as microgrid benefits and barriers. Through case studies, we highlight the difference in experience for microgrids developed under the auspices of a government-sponsored demonstration program versus those that were commercially developed. Lastly, we provide recommendations oriented towards creating a successful microgrid demonstration program.
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| 11 |
ID:
179675
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| Summary/Abstract |
Local flexibility markets have a substantial potential to unlock the flexibility of distributed energy resources in the distribution level. Capacity limitation services have been perceived as one of the most appealing products to be traded in these markets. This work argues why classical market-clearing and pricing mechanisms such as pay-as-bid, uniform pricing and Vickrey-Clarke-Groves (VCG) are not compatible with a market that trades capacity limitations. As a solution, we propose a local flexibility market mechanism which is built upon an adapted VCG-based auction. The mechanism achieves a trade-off among various desirable economic properties, including budget-balancedness, incentive-compatibility and stability. The suitability of the proposed mechanism is illustrated using a case study which is based on a real medium voltage feeder, located on the Danish island of Bornholm. Results show that aggregators and the distribution system operator benefit from the trade of capacity limitation services. We eventually conclude by providing a set of policy recommendations for the real-life operation of such a market.
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| 12 |
ID:
181766
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| Summary/Abstract |
Electricity distribution networks that contain large photovoltaic solar systems can experience power flows between customers. These may create both technical and socio-economic challenges. This paper establishes how these challenges can be addressed through the combined deployment of Community-scale Energy Storage (CES) and local network tariffs. Our study simulates the operation of a CES under a range of local network tariff models, using current Australian electricity prices and current network prices as a reference. We assess the financial outcomes for solar and non-solar owning customers and the distribution network operator. We find that tariff settings exist that create mutual benefits for all stakeholders. Such tariffs all apply a discount of greater than 50% to energy flows within the local network, relative to regular distribution network tariffs. The policy implication of these findings is that the, historically contentious, issue of network tariff reform in the presence of local solar power generation can be resolved with a mutually beneficial arrangement of local network tariffs and CES. Furthermore, the challenge of setting appropriate tariffs is eased through clear and intuitive conditions on local network tariff pricing.
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| 13 |
ID:
169722
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| Summary/Abstract |
Falling costs of solar PV and battery technologies are continuously changing the customer relationship with their electricity network. By managing their own self-generation, customers are able to place natural selection pressure on utilities to evolve. The devised techno-economic simulation model projects residential PV and battery investment decisions over 20 years in Perth, Australia to quantify the potential market impacts from policy and customer investment conditions. Using real-world demand and insolation profiles from 261 households, this research evaluates how cumulative customer PV and battery investments changes the network and market operating conditions, while under the influence of various feed-in tariff values. The results indicate that high feed-in tariff policy costs in the short-term, make it economically challenging to prevent or restrain significant residential PV-battery adoption in the longer-term. Moreover, continuous increases in residential PV-battery system installations eventually lead to annual net-exports substantially exceeding net-imports on the distribution network. This significant shift in network operation provides an opportunity for policymakers to utilise behind-the-meter PV-battery investments and decentralised energy markets to meet wider renewable energy and decarbonisation goals.
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| 14 |
ID:
181428
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| Summary/Abstract |
Our analysis of policy options was motivated by an inexplicable under-investment in demand response (DR) in the U.S. state of Georgia. In addition to estimating the size of the DR gap, we identify its causes and consequences. By modifying parameters of the U.S. flagship National Energy Modeling System (NEMS), we generate a baseline DR forecast with a default 4% maximum on-peak demand reduction, an achievable case with a DR limit of 20%, and a technical scenario that also halved the cost of storage. The results document many benefits of DR including a demand-reduction induced price effect (DRIPE), which makes DR more equitable than many other clean-energy policies that shift costs to non-participants. Our modeling results, literature review, and focus group analysis enable identification of DR barriers and motivators related to financial costs, electricity rates, consumer bills, pollution emissions, public health, energy equity, and inclusion. Our results suggest that the DR gap is caused less by technology limitations than by the need for financing initiatives, market innovations, infrastructure modernization, and enablers of socio-economic inclusion. By studying a state that lags in DR implementation, other countries and sub-national entities where DR is under-utilized can learn from our findings and methods.
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| 15 |
ID:
115703
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2012.
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| Summary/Abstract |
Residential electrical demand response (DR) offers the prospect of reducing the environmental impact of electricity use, and also the supply costs. However, the relatively small loads and numerous actors imply a large effort: response ratio. Residential DR may be an essential part of future smart grids, but how viable is it in the short to medium term? This paper reviews some DR concepts, then evaluates the propositions that households in cool temperate climates will be in a position to contribute to grid flexibility within the next decade, and that that they will allow some automated load control. Examples of demand response from around the world are discussed in order to assess the main considerations for cool climates. Different tariff types and forms of control are assessed in terms of what is being asked of electricity users, with a focus on real-time pricing and direct load control in energy systems with increasingly distributed resources. The literature points to the significance of thermal loads, supply mix, demand-side infrastructure, market regulation, and the framing of risks and opportunities associated with DR. In concentrating on social aspects of residential demand response, the paper complements the body of work on technical and economic potential.
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| 16 |
ID:
107640
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2011.
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| Summary/Abstract |
The closure of Ignalina Nuclear Power Plant, impact of recent global recession of the economy, as well as changes and problems posed by the global climate change require significant alterations in the Lithuanian energy sector development. This paper describes the current status and specific features of the Lithuanian power system, and in particular discusses the role of the distributed generators. Country's energy policy during last two decades was focused on substantial modernisation of the energy systems, their reorganisation and creation of appropriate institutional structure and necessary legal basis. The most important factors stimulating development of distributed generation in Lithuania are the following: international obligations to increase contribution of power plants using renewable energy sources into electricity production balance; development of small (with capacity less than 50 MW) cogeneration power plants; implementation of energy policy directed to promotion of renewable energy sources and cogeneration. Analysis of the legal and economic environment, as well as principles of regulation of distributed generation and barriers to its development is presented.
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| 17 |
ID:
176710
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| Summary/Abstract |
High penetration of distributed technologies would call for a different way to manage electricity reliability for semi-independent households. One option could be to allow customers to withdraw power from the grid when their home system fails. This behavior, however, could constitute an existential threat for utilities: if consumers use the network less, and continue to pay according to their usage, the utility might be unable to recover its costs. This paper investigates whether the creation of a reliability insurance market would help to deal with these concerns. We propose a business model where utilities offer insurance to semi-independent, yet risk averse households, against the prospect of a blackout, when a pay as you go system is no longer available. With the use of an Agent Based Model, we test if contracts from this market can converge into a theoretical optimal contract where bounded perception of risks and losses impact the price of insurance and potential revenues of utilities. We find that such a market could exist as consumers efficiently transfer all or a portion of their risk to the utility, based on their willingness to pay and risk profiles, which allows them to avoid blackouts at the margin.
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