Electric utility mergers in the presence of distributed renewable energy

2021 ◽  
pp. 105436
Author(s):  
Mahelet G. Fikru ◽  
Luis Gautier
2017 ◽  
Vol 47 ◽  
pp. 69-74 ◽  
Author(s):  
Jennie C. Stephens ◽  
Daniel J. Kopin ◽  
Elizabeth J. Wilson ◽  
Tarla Rai Peterson

Energies ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1187 ◽  
Author(s):  
Fernando Yanine ◽  
Antonio Sánchez-Squella ◽  
Aldo Barrueto ◽  
Antonio Parejo ◽  
Felisa Cordova ◽  
...  

In this paper a novel model is being proposed and considered by ENEL—the largest electric utility in Chile—and analyzed thoroughly, whereby electric power control and energy management for a 60-apartments’ residential building is presented as an example of the utility’s green energy program, part of its Smart Grid Transformation plan to install grid-tied distributed generation (DG) systems, namely microgrids, with solar generation and energy storage in Santiago, Chile. The particular tariffs scheme analysis shown is part of the overall projected tentative benefits of adopting the new scheme, which will require the utility’s customers to adapt their consumption behavior to the limited supply of renewable energy by changing energy consumption habits and schedules in a way that maximizes the capacity and efficiency of the grid-tied microgrid with energy storage. The change in behavior entails rescheduling power consumption to hours where the energy supply capacity in the DG system is higher and price is lower as well as curtailing their power needs in certain hourly blocks so as to maximize DG system’s efficiency and supply capacity. Nevertheless, the latter presents a problem under the perspective of ENEL’s renewable energy sources (RES) integration plan with the electric utility’s grid supply, which, up until now and due to current electric tariffs law, has not had a clear solution. Under said scenario, a set of strategies based on energy homeostasis principles for the coordination and control of the electricity supply versus customers’ demand has been devised and tested. These strategies which consider various scenarios to conform to grid flexibility requirements by ENEL, have been adapted for the specific needs of these types of customers while considering the particular infrastructure of the network. Thus, the microgrid adjusts itself to the grid in order to complement the grid supply while seeking to maximize green supply capacity and operational efficiency, wherein the different energy users and their energy consumption profiles play a crucial role as “active loads”, being able to respond and adapt to the needs of the grid-connected microgrid while enjoying economic benefits. Simulation results are presented under different tariff options, system’s capacity and energy storage alternatives, in order to compare the proposed strategies with the actual case of traditional grid’s electricity distribution service, where no green energy is present. The results show the advantage of the proposed tariffs scheme, along with power control and energy management strategies for the integration of distributed power generation within ENEL’s Smart Grid Transformation in Chile.


2014 ◽  
Vol 56 ◽  
pp. 394-405
Author(s):  
Yodthong Mensin ◽  
Worajit Setthapun ◽  
Wattanapong Rakwichian

2019 ◽  
Vol 97 ◽  
pp. 01009
Author(s):  
Svetlana Shilkina

Realisation of “Smart city” concept is connected with introduction of activities as to increase in energy efficiency and resource saving in the area of electric utility industry, including for the account of applying renewable energy sources (RES). Introduction of concept elements is economically justified not only in big megapolises, but in minor residential areas, as well. Notwithstanding the growth in power production with the employment of sun and wind technologies, the share of RES-based power generating plants in Russia, remains inconsiderable and amounts to approximately 0.1% of the total registered output of country’s power sources. Development of this perspective sphere is mainly carried out in those Russian regions where diesel fuel is used at very high potential capacities of the sun and wind power. Projects as to RES development in Russia are economically substantiated for isolated power-engineering systems, their introduction allows to cut consumption rate of expensive diesel fuel which is environmentally unfriendly. The estimates as referred herein, evidence a necessity to substitute elements of power-generating equipment of diesel-powered plants with solar-power farms. Development of renewable energy-generating industry in the country must be facilitated, by accelerated introduction of this resource in the regions with autonomous power-supply, where RES provides a fairly good economic effect.


2020 ◽  
pp. 194-223
Author(s):  
Leah Cardamore Stokes

Chapter 8 examines how networked interest groups can learn about policies in other states and use this information to swiftly drive retrenchment. Ohio was one of the last states to enact a renewable energy target. For this reason, electric utilities understood more quickly that the policy would undermine the financial viability of their existing fossil fuel assets. The American Legislative Exchange Council, which has prominent electric utility and fossil fuel companies as members, played an important role in Ohio, putting retrenching clean energy “mandates” on the agenda. In 2019, the utilities finally succeeded in repealing the state’s efficiency and renewable standards, replacing them with a bailout for coal plants. In this case, one can see how policy feedback can fail when opponents networked across the states learn from earlier policies’ implementation and weaken the policy before it is able to generate lock-in.


Author(s):  
John A. Merritt

Abstract As part of the state’s restructuring and deregulation of the electric power industry, Massachusetts established the Renewable Energy Trust Fund (RETF) which earmarked approximately $50 million, collected as a surcharge on consumer electric utility bills, for distribution to municipalities that faced significant increased costs of MSW disposal because of required clean air retrofits to their Waste-to-Energy (WTE) facilities. The focus of this discussion will be upon the process, logistics and issues that evolved as that statutory benefit was implemented, including conflicts that led to the need for using a dispute resolution mechanism. Also included will be summary of issues that other states may want to address if considering similar provisions, in order to avoid some of the conflicts that arose during the Massachusetts process. For details on the Massachusetts program, see my paper presented last year at NAWTEC VIII, titled: Case Study – Electric Utility Restructuring – Massachusetts Renewable Energy Trust Fund.


2013 ◽  
Author(s):  
Héctor Enrique Campbell Ramírez ◽  
René Delgado Rendón ◽  
Alejandro A. Lambert Arista ◽  
Margarita Gil Samaniego Ramos

A study was designed and implemented to simulate and validate experimentally the thermal performance and energy of two houses equipped for efficient use of energy in Mexicali, Baja California, Mexico. The objectives were the simulation and the assessment of energetic, economic, social and environmental impacts of the use of high efficiency air conditioning, high efficiency refrigerators, Solar Water Heater (SWH) and photovoltaic (PV) modules. The simulations carried out were validated by field measurements during years 2011 and 2012. For PV systems, we estimated generation of 1837 kWh/yr. and in the annual monitoring values were obtained 1855 kWh/yr. For SWH, the investment is recovered within a reasonable time (6 years) by saving conventional energy. Electricity consumption per unit area of building for winter and summer was 0.23 and 0.46 kWh/ft2, respectively. The field data of average power for the AC is consistent with the SEER 13 being of 1.0 kW, and for the refrigerator, average power was 128 W. For the 2-story house (1033 sq. ft.), simulation predicted an annual consumption of 4559 kWh and measured value was 4197, PV system contributed 55% of consumption. In regard to the estimated electric bill was for $233 USD, and the reported value was $207 USD. The PV cells contributed with 60%, and the electric utility invoice was $78 USD. In these prototype homes is significantly diminishing electricity consumption in contrast to habitual housing. When energy efficiency is achieved as a first goal, the contribution of renewable energy becomes significant. However, for the PV systems, there is much to do, as combining lower investment with funding polices, because, when energy use is reduced, by energy efficiency and saving programs, customers have a subsidized electricity rate. We strongly recommend focus the subsidy for the users and not to the electricity rates. The way to use energy and habits of user, impacts significantly saving actions and energy efficient and the development of renewable energy. It is not easy to compare houses with different family behaviors. We recommend carry out energy education programs, to induce the market for energy saving and renewable. The monitoring allowed a better assessment of current performance of photovoltaic modulus and inverters, and the effects of temperature; radiation changes due to shade and clouds; dust on surfaces, and of the quality and stability of the supply lines (voltage variations), over their behavior and efficiency. Finally, field experiences will help to develop non-invasive systems, using telemetry of data and control commands, which must be combined with the design of house facilities in such a way forward to smart systems.


Sign in / Sign up

Export Citation Format

Share Document