Distributed Energy Articles

  • It’s time to invest in clean energy in Africa

    Private-sector investment in electricity is sitting on the sidelines in Africa. Here’s how we can change that. The math for Africa’s clean energy future is adding up. Solar lamps are spreading like fireflies across Ghana. A first-of-its-kind solar farm in Rwanda is providing electricity for 15,000 rural homes. Utility-scale solar and wind projects are being built in ...


    By Ensia

  • Water distribution network robust design based on energy surplus index maximization

    The aim of this paper is to show that energy surplus indices, such as resilience index, besides providing a very good indirect measure of water distribution network reliability, also represent a valuable and effective indicator of network robustness under alternative network scenarios. It can thus be profitably used for network design under conditions of uncertain future demands. The ...


    By IWA Publishing

  • How do you bring electricity to 620 million people?

    Sub-Saharan Africa needs a more reliable energy supply. The way it chooses to meet that need will affect the entire planet. In South Africa, major cities are subject to regular power outages as electric utility Eskom periodically shuts down parts of its distribution system to take the pressure off the aging national grid. Whole areas of Cape Town and Johannesburg are without power ...


    By Ensia

  • Cascade failures and distributed generation in power grids

    Power grids are nowadays experiencing a transformation due to the introduction of distributed generation based on renewable sources. At difference with classical distributed generation, where local power sources mitigate anomalous user consumption peaks, renewable sources introduce in the grid intrinsically erratic power inputs. By introducing a simple schematic (but realistic) model for power ...


    By Inderscience Publishers

  • Reinvent the toilet: the NUS experience of building a decentralized toilet for energy, water and resource recovery

    In conventional activated sludge (CAS) treatment of sewage, the pollutants are mostly dissipated and hardly any reuse is present. This makes wastewater treatment very energy intensive and not sustainable in the future. Instead, sewage should be considered as a renewable resource, from which value can be extracted in the form of water, energy and nutrients (mostly nitrogen, N, phosphorus, P and ...


    By IWA Publishing

  • Gatorade Distribution Facility Tolleson, Arizona

    "The Gatorade solar installation produced 108% of the expected energy during the 30-day incentive performance verification test, the highest to date.” Chico Hunter, Sr. Engineer, SRP EarthWise Solar Energy Program Unique Feature: The system has generated more energy than anticipated- at 108% capacity, according to officials from the Salt River Project (SPR), the Phoenix based ...


    By Kyocera Solar, Inc.

  • Clarke Energy & GE`s Distributed Power Collaborate on On-Site Power Plant to Boost Mozambique`s Local Grid - Case Study

    GE Supplying 10 of its J624 Jenbacher Gas Engines for the Kuvaninga Energia Project 40 MW On-Site Power Plant to provide More Reliable Electricity to Grid in Southern Mozambique Clarke Energy Contract Marks First Jenbacher Gas Engine Order in Mozambique Liverpool, UK—GE Power & Water’s Distributed Power business (NYSE: ...


    By Clarke Energy

  • Effect of distributed generation modelling on performance of distribution systems

    Due to the continuous increase of distributed generation (DG) penetration into distribution systems, load flow analysis always needs improvement to be more flexible, fast and computationally efficient especially when integrating DG with existing distribution systems. The work in this paper is divided into two parts; in the first part a new algorithm is developed to solve the power flow problem ...


    By Inderscience Publishers

  • Between field and table: environmental implications of local food distribution

    Local food has been championed as a sustainable alternative to the industrial food system for many reasons, including a perceived environmental benefit through an expected decrease in the energy needed for transport from farm to market. The environmental benefit of local food, however, has been clouded by questions surrounding the energy footprint of small–scale distribution methods that do ...


    By Inderscience Publishers

  • Solar powered mini steam power plant: a simulation approach

    The solar powered steam power plant is a mini power plant that is meant to generate power at the location of the consumer hence playing a pivotal role in distributed power generation. This plant will also have a huge impact on the environment as it utilises the sun's energy, making it eco–friendly and reducing its impact on the environment by reducing the amount of fossil fuel consumption. In ...


    By Inderscience Publishers

  • Unpacking the energy implications of distributed water infrastructure: how are rainwater systems performing?

    Drought and concern over climate change has led to the increased use of distributed water systems in Australia to supplement centralised supply systems. A literature review carried out by the Institute for Sustainable Futures (ISF) into the energy consumption of water infrastructure found that very little data on energy consumption exists, particularly for distributed systems. This paper reviews ...


    By IWA Publishing

  • Comparative performance of BESS and SMES in distribution network to improve power quality

    The FACTS devices, like STATCOM, are becoming a part of the modern power system to improve the power system operation and power quality problems. Integrating the battery energy storage system (BESS)/superconducting magnetic energy storage (SMES) across the dc bus of the STATCOM can provide effective modulation of the real and reactive power. The dynamics of each of these differ because of their ...


    By Inderscience Publishers

  • A new EE resource: Distributed people

    Energy efficiency is often described as the invisible resource. It improves our energy supply without any of the usual industry trappings: smokestacks, wind turbines, transmission lines and poles. This is one of its virtues.But efficiency’s invisibility also causes problems. Because it operates out of sight – inside walls, underneath lampshades, and in factory motors — efficiency tends to attract ...

  • Why it is so Hard – and so Important – To increase distributed resources

    If distributed resources are such a good idea, why don’t we build more of them? A report released this week by Tufts University sheds some light on the answer. Despite all of the talk about the efficiency they bring to the grid, resources like solar energy and combined heat and power still face significant regulatory and monetary hurdles. Consider the following findings from “Distributed ...

  • Grid Connected Renewable Energy and Distributed Generation Partnerships

    The objective of this project is to facilitate the deployment of renewable energy and distributed generation technology in India by identifying barriers to deploying renewable energy and distributed generation, and creating strategies for overcoming these barriers. This project will include a peer assessment, site visits in various APP Partner countries, and workshops. A handbook outlining best ...

  • A simplified approach to control water distribution under restricted power supply

    This paper presents a water supply problem arising from the regions where power supply is not regulated and the water supplier has to manage the demand with minimum possible cost. The consumption is constrained to organise rationing, and thus known day after day. Furthermore, the same consumption profile is maintained during the summer season, and this explains the importance of the reservoir ...


    By Inderscience Publishers

  • Controlling the power balance in an 'empty network'

    This paper presents the concept of an 'empty network' and shows how the power balance can be controlled in such a system. In this study, an 'empty network' is defined as a transmission system in which no rotating mass is present. All generators are connected to distributed systems and 'hidden' behind power electronic interfaces. One generator creates a neat 50 Hz voltage that serves as a ...


    By Inderscience Publishers

  • Characteristics of modern nonlinear loads and their influence on systems with distributed generation

    Nonlinear electronic loads may demonstrate unexpected reactions to variations in power system voltage. This effect of the electrical load may be very significant in distributed generation power systems containing relatively small generators. This paper reviews modern nonlinear electronic load current consumption mechanisms and provides typical current waveforms. Based on extensive measurements ...


    By Inderscience Publishers

  • MATLAB-based modelling of Distribution STATCOM applied to isolated power system

    This paper presents the modelling of Distribution Static Compensator (D-STATCOM) used in isolated power systems. The model of D-STATCOM is developed using Power System Block-set (PSB) and Simulink toolboxes of standard MATLAB software. Two proportional integral PI controllers are used to control DC bus voltage and AC bus voltage regulation at the point of common coupling. Results are presented ...


    By Inderscience Publishers

  • Application of temperature-distribution models to evaluate the energy and exergy of stratified thermal storages

    Vertical stratification occurs in many thermal energy storages, and is often promoted to increase efficiency. Six temperature-distribution models for vertically stratified Thermal Energy Storage (TES) systems are described and applied for determining their energy and exergy efficiencies. The models are Linear, Stepped, Continuous-linear, Basic Three-zone, General Three-zone and General-linear. ...


    By Inderscience Publishers

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