scholarly journals How Hybridization of Energy Storage Technologies Can Provide Additional Flexibility and Competitiveness to Microgrids in the Context of Developing Countries

Energies ◽  
2019 ◽  
Vol 12 (16) ◽  
pp. 3138 ◽  
Author(s):  
Linda Barelli ◽  
Gianni Bidini ◽  
Paolo Cherubini ◽  
Andrea Micangeli ◽  
Dario Pelosi ◽  
...  
Keyword(s):  
Developing Countries ◽  
Energy Storage ◽  
Capital Expenditure ◽  
Renewable Energy Sources ◽  
Energy Access ◽  
Hybrid Storage ◽  
Cost Of Energy ◽  
Speed Up ◽  
Promising Solution ◽  
Storage Technologies

Hybrid microgrids, integrating renewable energy sources and energy storage, are key in extending energy access in the remote areas of developing countries, in a sustainably way and in providing a good quality of service. Their extensive development faces a financing gap, having a high capital expenditure (CAPEX) also due to high storage costs. In the present work, a case study of a Ugandan microgrid was used to compare various battery technologies employed on their own and in a combination with a flywheel, in terms of their durability and the overall levelized cost of energy (LCOE) of the plant. Simulations show how hybrid storage configurations result in a lower LCOE for the current load profile of the microgrid and even more so for two reference residential and industrial load scenarios, suggesting this would remain the best solution even accounting for future socio-economic development. The resulting LCOE for hybrid storage configurations is lower than the average values reported for microgrid projects and represents a promising solution to speed up the development of such electrification initiatives.

Cellulose Nanocrystals Assisted Preparation of Electrochemical Energy Storage Electrodes

2017 ◽  
Author(s):  
Danny Illera ◽  
Victor Fontalvo ◽  
Humberto Gomez
Keyword(s):  
Energy Storage ◽  
Electrochemical Performance ◽  
Surface Area ◽  
Cellulose Nanocrystals ◽  
Low Cost ◽  
Renewable Energy Sources ◽  
Film Deposition ◽  
One Step ◽  
Film Synthesis ◽  
Storage Technologies

Renewable energy sources demands sustainable energy storage technologies through the incorporation of low-cost and environment-friendly materials. In this regard, cellulose nanocrystals (CN), which are needle-shaped nanostructure derived from cellulose-rich resources, are extracted by sulfuric acid hydrolysis of biomass and used as both template and binder for the construction of electrochemical capacitors electrodes. A composite material is synthetized comprising CN and a conjugated electroactive polymer (CEP) to overcome the electrical insulating properties of cellulose as well as to exploit enhanced electrochemical activity by increased electrode surface-area. A one-step in-situ film synthesis protocol is evaluated by performing simultaneous polymerization and film deposition. The effect of proportion of starting components are evaluated through statistical Response Surface Methodology towards optimizing the electrochemical performance. Depending on the mass proportion of the starting components, a conducting network could be created by surface coating of the CEP on the whiskers during polymerization. Electrochemical measurements suggest an increase in specific surface area by at least a factor of two relative to bare CEP as a consequence of the template role of cellulose. Therefore, adjustment of the proposed one-step synthesis parameters allows tuning the material properties to meet specific application requirements regarding electrochemical performance.

scholarly journals Defining and Evaluating Use Cases for Battery Energy Storage Investments: Case Study in Croatia

Energies ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 376 ◽  
Author(s):  
Ivan Pavić ◽  
Zora Luburić ◽  
Hrvoje Pandžić ◽  
Tomislav Capuder ◽  
Ivan Andročec
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Power System ◽  
Renewable Energy Sources ◽  
Developed Countries ◽  
Energy Sources ◽  
Battery Energy Storage ◽  
Market Opportunities ◽  
Battery Energy ◽  
Storage Technologies

Battery energy storage systems (BESS) and renewable energy sources are complementary technologies from the power system viewpoint, where renewable energy sources behave as flexibility sinks and create business opportunities for BESS as flexibility sources. Various stakeholders can use BESS to balance, stabilize and flatten demand/generation patterns. These applications depend on the stakeholder role, flexibility service needed from the battery, market opportunities and obstacles, as well as regulatory aspects encouraging or hindering integration of storage technologies. While developed countries are quickly removing barriers and increasing the integration share of BESS, this is seldom the case in developing countries. The paper identifies multiple case opportunities for different power system stakeholders in Croatia, models potential BESS applications using real-world case studies, analyzes feasibility of these investments, and discusses financial returns and barriers to overcome.

Research on Application of Energy Storage Technology in Renewable Energy Source Generation

2014 ◽  
Vol 1070-1072 ◽  
pp. 418-421 ◽  
Author(s):  
Jun Chen ◽  
Chun Lin Guo
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Power System ◽  
Renewable Energy Sources ◽  
Energy Storage Devices ◽  
Super Capacitor ◽  
Storage Technology ◽  
Energy Storage Technology ◽  
Research On Application ◽  
Storage Technologies

With the reserves of coal and other fossil energy decreasing, renewable energy sources (RES) will become the main power source of future power system. In order to ensure stable supply of RES generation and to improve efficiency of system, energy storage technology will play a more and more important role in power system. In this paper, we discussed the importance and characteristics of various energy storage technologies with battery and super capacitor energy storage technology as examples. Then we elaborated the principles and important effects of energy storage technologies in RES generation. Finally, using PSCAD to build the simulation model of grid connected RES generation and storage technology to obtain the effect of energy storage technologies. Results show that the energy storage devices can effectively alleviate the fluctuation of RES.

scholarly journals Grid Modernization - Integration of Storage

2016 ◽  
Vol 9 (2) ◽  
Author(s):  
Z. Islifo
Keyword(s):  
Energy Storage ◽  
Large Scale ◽  
Power Grid ◽  
Renewable Energy Sources ◽  
Customer Participation ◽  
Energy Sources ◽  
Electric Power Grid ◽  
Time Flow ◽  
Storage Technologies ◽  
Vanadium Redox

The existing electric power grid is reliable enough to meet everyday needs of U.S. electricity users. However, the grid needs major infrastructure upgrades to meet the rising demands for a reliable, resilient, and secure electricity delivery. Drivers to modernize the grid include increased demand for clean sources of energy, growing number of renewable energy sources on the grid and customer participation in power generation. Smart grid technologies are critical for monitoring, managing and controlling the power grid. Energy storage introduces an important new dimension on the grid, the ability to store electricity at one time and release the stored electricity for use at another time. Flow batteries are one type of energy storage technologies that are well suited for large-scale utility application on the grid. Currently, vanadium redox ow batteries are the most common used utility-scaled ow batteries.

A comparison of the geological potential for methane, hydrogen and compressed air energy storage

2020 ◽  
Author(s):  
Firdovsi Gasanzade ◽  
Sebastian Bauer ◽  
Wolf Tilmann Pfeiffer
Keyword(s):  
Energy Storage ◽  
Energy Demand ◽  
Exergy Analysis ◽  
Storage Capacity ◽  
Renewable Energy Sources ◽  
Compressed Air ◽  
Volumetric Assessment ◽  
Energy Storage Capacity ◽  
Potential Trap ◽  
Storage Technologies

<p>Energy transition from conventional to renewable energy sources requires large energy storage capacities to balance energy demand and production, due to the fluctuating weather-dependent nature of renewable energy sources like wind or solar power. Subsurface energy storage in porous media may provide the required large storage capacities. Available storage technologies include gas storage of hydrogen, synthetic methane or compressed air. Determination of the spatial dimensions of potential geological storage structures is required, in order to estimate the achievable local storage potential. This study, therefore, investigates the energy storage potential for the three storage technologies using a part of the North German Basin as study region.</p><p>For this study, a geological model of the geological subsurface, including the main storage and cap rock horizons present, was constructed and consistently parameterized using available data from the field site. Using spill point analysis potential trap closures were identified, also considering existing fault systems and salt structures for volumetric assessment. Volumetric assessment was performed for each storage site for methane, hydrogen and compressed air, as storage gases and their gas in place volumes were calculated. The effects of uncertainty of the geological parameters were quantified accounting for porosity, permeability and the maximum gas saturation using regional petrophysical models. The total regional energy storage capacity potential was estimated for methane and hydrogen, based on their lower heating values, while an exergy analysis of methane, hydrogen and compressed air was used to compare all available storage technologies. In addition to the storage capacity, also deliverability performance under pseudo-steady state flow condition was estimated for all sites and storage gases.</p><p>The results show significant gas in place volumes of about 2350 bcm for methane, 2080 bcm for hydrogen and 2100 bcm for compressed air as a regional gas storage capacity. This capacity is distributed within three storage formations and a total of 74 potential trap structures. Storage sites are distributed rather evenly over depth, with shallow sites at about 400 - 500 m and deep sites reaching depths of about 4000 m. The exergy analysis shows that hydrogen and methane storage technologies have high exergy values of about 15.9 kWh and 8.5 kWh per m<sup>³</sup>, due to the high chemical part of the exergy, while for compressed air energy storage only the physical part is used during storage and the corresponding value is thus reduced to 6.1 kWh. The total energy storage capacity thus identified of about 32000 TWh of methane and 8400 TWh of hydrogen, with a low estimate of 23000 TWh and 6100 TWh accounting for uncertainty of geological parameters. Thus, the potential is much larger than predicted required capacities, showing that the subsurface storage technologies have a significant potential to mitigate offsets between energy demand and renewable production in a sustainable and renewable future energy system.</p>

scholarly journals Optimal Selection of Thermal Energy Storage Technology for Fossil-Free Steam Production in the Processing Industry

2021 ◽  
Vol 11 (3) ◽  
pp. 1063
Author(s):  
Anton Beck ◽  
Alexis Sevault ◽  
Gerwin Drexler-Schmid ◽  
Michael Schöny ◽  
Hanne Kauko
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Renewable Energy Sources ◽  
Continuous Production ◽  
Advantages And Disadvantages ◽  
Storage Technology ◽  
Energy Storage Technology ◽  
Storage Technologies

Due to increased share of fluctuating renewable energy sources in future decarbonized, electricity-driven energy systems, participating in the electricity markets yields the potential for industry to reduce its energy costs and emissions. A key enabling technology is thermal energy storage combined with power-to-heat technologies, allowing the industries to shift their energy demands to periods with low electricity prices. This paper presents an optimization-based method which helps to select and dimension the cost-optimal thermal energy storage technology for a given industrial steam process. The storage technologies considered in this work are latent heat thermal energy storage, Ruths steam storage, molten salt storage and sensible concrete storage. Due to their individual advantages and disadvantages, the applicability of these storage technologies strongly depends on the process requirements. The proposed method is based on mathematical programming and simplified transient simulations and is demonstrated using different scenarios for energy prices, i.e., various types of renewable energy generation, and varying heat demand, e.g., due to batch operation or non-continuous production.

scholarly journals Large scale electricity storage technology options for smart grid

2018 ◽  
Vol 7 (2) ◽  
pp. 635
Author(s):  
Surender Reddy Salkuti
Keyword(s):  
Energy Storage ◽  
Smart Grid ◽  
Large Scale ◽  
Cost Benefit Analysis ◽  
Renewable Energy Sources ◽  
Cost Benefit ◽  
Energy Storage Devices ◽  
Advantages And Disadvantages ◽  
Current Impact ◽  
Storage Technologies

This paper aims to establish a comparative analysis between various storage techniques available and to evaluate their current impact as well as potential to be employed more effectively in the future. This paper presents the classification of each storage technique on the basis of features, cost, location, mathematical modelling, advantages and disadvantages. This paper shows the energy storage devices behavior to effectively improve the renewable energy sources connected to the utility grid. The paper also identifies the different storage techniques that can be implemented in to a smart grid and a cost benefit analysis of the different storage techniques. The paper exhaustively reviews the functionality of a major sector of smart grid and energy storage. From this paper, it can be observed that the use of energy storage technologies will increase the supply, and balances the demand for energy.

scholarly journals Domestic hydrogen installation in Poland – technical and economic analysis

2015 ◽  
Vol 64 (2) ◽  
pp. 189-196 ◽  
Author(s):  
Maciej Cholewiński ◽  
Łukasz Tomków
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Economic Analysis ◽  
Renewable Energy Sources ◽  
Heat Pumps ◽  
Energy Sources ◽  
Output Volatility ◽  
Technical And Economic Analysis ◽  
Conventional Solution ◽  
Storage Technologies

Abstract The application of renewable energy sources poses the problems connected with output volatility. In order to decrease this effect the energy storage technologies can be applied, particularly fuel cells connected with hydrogen storage. In this paper the application of SOFC system for a household in Poland is proposed. Economic and technical analysis is performed. It was found that the proposed installation is profitable after 25 years of operation when compared with conventional solution - heat pumps and gas-fired boilers

scholarly journals A Review of Energy Storage Technologies’ Application Potentials in Renewable Energy Sources Grid Integration

2020 ◽  
Vol 12 (24) ◽  
pp. 10511
Author(s):  
Henok Ayele Behabtu ◽  
Maarten Messagie ◽  
Thierry Coosemans ◽  
Maitane Berecibar ◽  
Kinde Anlay Fante ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Grid Integration ◽  
Li Ion Batteries ◽  
Potential Applications ◽  
Li Ion ◽  
Utility Grid ◽  
Storage Technologies

Renewable energy sources (RESs) such as wind and solar are frequently hit by fluctuations due to, for example, insufficient wind or sunshine. Energy storage technologies (ESTs) mitigate the problem by storing excess energy generated and then making it accessible on demand. While there are various EST studies, the literature remains isolated and dated. The comparison of the characteristics of ESTs and their potential applications is also short. This paper fills this gap. Using selected criteria, it identifies key ESTs and provides an updated review of the literature on ESTs and their application potential to the renewable energy sector. The critical review shows a high potential application for Li-ion batteries and most fit to mitigate the fluctuation of RESs in utility grid integration sector. However, for Li-ion batteries to be fully adopted in the RESs utility grid integration, their cost needs to be reduced.

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