Development Of Energy Storage Systems Research Articles

Interface regulated MnO2/Mn2+ redox chemistry in aqueous Zn ion batteries

Due to the rapid development of energy storage systems from the goal of carbon neutrality, rechargeable aqueous Zn-MnO2 batteries have attracted growing attention. While the controversy surrounding various mechanisms, such as Zn2+ insertion, Zn2+/H+ co-insertion and Mn dissolution/deposition, leads to limitation of MnO2 cathodes, especially for the β-MnO2. Though showing promising performance in recent works, the reaction process and influence factors of β-MnO2 cathodes are still under debate. In this work, a complete MnO2/Mn2+ redox chemistry is proposed to explain the abnormal electrochemical behaviors of β-MnO2 cathodes, which indicates the reversible dissolution/deposition of layered manganese oxides appears after the initial MnO2 dissolution reaction. The revealed effects of interfacial environment in regulating the electrochemical reactions also provide a new perspective for studying the working mechanism of aqueous Zn-MnO2 batteries. Besides, the high specific capacity shown in the MnO2/Mn2+ redox chemistry also contributes to designing high-performance cathodes for AZIBs.

Optimal Control of an Energy-Storage System in a Microgrid for Reducing Wind-Power Fluctuations

In conventional low-voltage grids, energy-storage devices are mainly driven by final consumers to correct peak consumption or to protect against sources of short-term breaks. With the advent of microgrids and the development of energy-storage systems, the use of this equipment has steadily increased. Distributed generations (DGs), including wind-power plants as a renewable energy source, produces vacillator power due to the nature of variable wind. Microgrids have output power fluctuations, which can cause devastating effects such as frequency fluctuations. Storage can be used to fix this problem. In this paper, a grid-connected wind turbine and a photovoltaic system are investigated considering the atmospheric conditions and wind-speed variations, and a control method is proposed. The main purpose of this paper is to optimize the capacity of energy-storage devices to eliminate power fluctuations in the microgrid. Finally, the conclusion shows that, in microgrids with supercapacitors, the optimal capacity of microgrid supercapacitors is determined. This method of control, utilizing the combined energy-storage system of the battery supercapacitor, in addition to reducing the active power volatility of the wind turbine and photovoltaic generation systems, also considers the level of battery protection and reduction in reactive-power fluctuations. In the proposed control system, the DC link in the energy-storage systems is separate from most of the work conducted, which can increase the reliability of the whole system. The simulations of the studied system are performed in a MATLAB software environment.

Switching Transition Analysis and Optimization for Bidirectional CLLC Resonant DC Transformer

The demand for isolated bidirectional dc transformer (DCX) is driven by the fast development of energy storage system, data center power supply and transportation electrification. Due to zero voltage switching (ZVS) and small rms current, the open-loop CLLC resonant converter operating at the resonant frequency is considered a promising candidate for DCX with a constant voltage transfer ratio. To solve unsmooth bidirectional power flow and current distortion in traditional CLLC-DCX with synchronization rectification (SR) modulation, a dual-active-synchronization (DAS) modulation is adopted with identical driving signals on both sides. Firstly, the switching transition of this modulation is fully analyzed with the consideration of large device output capacitances. After comparison of different transitions, a so-called Sync-ZVS transition is found more desirable with ZVS, no deadtime conduction loss, and load-independent voltage gain. In order to achieve this switching transition, an Axis and Center Symmetric (ACS) method is proposed. Based on this method, an overall design procedure of CLLC-DCX with DAS modulation is also proposed. Finally, Sync-ZVS transition and the proposed ACS method are both verified by three 18 kW 500 kHz prototypes with a 98.8% peak efficiency. This article is accompanied by one video demonstrating the load changing test.

Operational Scheduling of Behind-the-Meter Storage Systems Based on Multiple Nonstationary Decomposition and Deep Convolutional Neural Network for Price Forecasting.

In the competitive electricity market, electricity price reflects the relationship between power supply and demand and plays an important role in the strategic behavior of market players. With the development of energy storage systems after watt-hour meter, accurate price prediction becomes more and more crucial in the energy management and control of energy storage systems. Due to the great uncertainty of electricity price, the performance of the general electricity price forecasting models is not satisfactory to be adopted in practice. Therefore, in this paper, we propose a novel electricity price forecasting strategy applied in optimization for the scheduling of battery energy storage systems. At first, multiple nonstationary decompositions are presented to extract the most significant components in price series, which express remarkably discriminative features in price fluctuation for regression prediction. In addition, all extracted components are delivered to a devised deep convolution neural network with multiscale dilated kernels for multistep price forecasting. At last, more advanced price fluctuation detection serves the optimized operation of the battery energy storage system within Ontario grid-connected microgrids. Sufficient ablation studies showed that our proposed price forecasting strategy provides predominant performances compared with the state-of-the-art methods and implies a promising prospect in economic benefits of battery energy storage systems.

Ionic transport in K2Ti6O13

Abstract The increasing demand for batteries forced the development of energy storage systems that rely on materials consisting of abundant elements in the Earth’s crust. Switching from Li+ to K+ as the main ionic charge carrier needs highly conducting potassium-bearing electrolytes to realize K+ ion batteries (PIBs). The knowledge gained from the design of Li-ion batteries (LIBs) and Na-ion batteries (NIBs) may conceptually inspire also the establishment of PIBs. Considering, for instance, the hexatitanates Na2Ti6O13, Li2Ti6O13, and H2Ti6O13, which were previously investigated as components for LIBs and NIBs, here we investigated ion dynamics in the K-analog K2Ti6O13. Ionic transport in polycrystalline samples of K2Ti6O13 was studied in a moisture-free atmosphere by broadband impedance spectroscopy in a temperature range from 20 °C to 450 °C. The current study aims at establishing a correlation between structural features of K2Ti6O13 and long-range ionic transport. As expected for K+ transport in K2Ti6O13 with its geometrically obstructed structure, the overall activation energy of ion transport in the ternary oxide takes a rather high value of 0.97(2) eV. Almost the same result (0.95(3) eV) is obtained for the migration activation energy, which we extracted from the analysis of crossover frequencies of the corresponding conductivity isotherms. By comparing our results with those of Na2Ti6O13 (0.82 eV), Li2Ti6O13 (0.65 eV), and H2Ti6O13, we clearly see how the size of the mobile cation correlates with both specific conductivities and activation energies. This comparison points to K+ being the main charge carrier in K2Ti6O13. It also helps in laying the foundations to derive the relevant structure-property relationships in this class of materials.

Bimetallic AC/Ag2CrO4/SnS heterostructure photoanode for energy conversion and storage: A self-powered Photocapacitor

The worldwide increase in generation of solar based electricity prompts the essentiality of research efforts on the development of energy storage systems. In this regard, self-powered photocapacitors are of keen interest as they can directly convert and store the solar energy in the form of electrical energy in a single device. This study reports the photoelectrochemical energy storage capacity of a novel photocapacitor fabricated with FTO/Activated Carbon (AC)/Ag 2 CrO 4 /SnS nanostructured photoanode. Initially, the Ag 2 CrO 4 and SnS nanostructures were synthesized using simple ultrasonication technique and hydrothermal method, respectively. The crystallinity, morphology and optical properties of the synthesized nanostructures were then studied. The XRD patterns indicated orthorhombic structure of both Ag 2 CrO 4 and SnS. Their optical band gaps were calculated as 1.93 and 1.65 eV, respectively using Kubelka-Munk plots. The FTO/AC/Ag 2 CrO 4 /SnS photoanode was then fabricated and photoelectrochemical studies, namely cyclic voltammetry and electrochemical impedance spectroscopy were carried out on a three electrode system. The FTO/AC/Ag 2 CrO 4 /SnS photoanode showed a specific capacitance of 4782 mF/g at the scan rate of 10 mVs −1 when the device was subjected to visible light illumination (1 sun). Hence, the fabricated heterostructured photoanode provides a promising path for the design and synthesis of novel highly efficient solar energy harvesting and storage materials as photocapacitors. • A promising path for the design of efficient solar energy harvesting and storage. • A novel photocapacitor with FTO/Activated Carbon/Ag 2 CrO 4 /SnS photoanode. • The specific capacitance of 4782 mF/g (10 mVs −1 ) at 1 sun illumination. • Synthesis & photoelectrochemical application of rod-like Ag 2 CrO 4 & flake-like SnS.

Trends on the Development of Hybrid Supercapacitor Electrodes from the Combination of Graphene and Polyaniline

The high demand for efficient energy devices leads to the rapid development of energy storage systems with excellent electrochemical properties, such as long life cycles, high cycling stability, and high power density. SC is postulated as a potential candidate to fulfill this demand. The combination of graphene and polyaniline can create SC electrodes with excellent electrical conductivity, high specific surface area, and high capacitance. The graphene/polyaniline hybrid electrodes represent an attractive means to overcome the major drawbacks of graphene or polyaniline non-hybrid (single) electrode materials. In this review article, the trend in the development of various graphene/polyaniline hybrid electrodes is summarized, which includes the zero-dimension graphene-quantum-dots/polyaniline hybrid, one-dimension graphene/polyaniline hybrid, two-dimension graphene/polyaniline hybrid, and three-dimension hydrogel-shaped graphene/polyaniline hybrid. Several strategies and approaches to enhance the capacitance value and cycling stability of graphene/polyaniline hybrid electrodes are discussed in this review article, such as the addition of transition metal oxides and metal-organic frameworks, and modification of graphene into functionalized-graphene. The performance of the electrodes prepared from the combination of graphene with other conducting polymers (i.e., polypyrrole, polythiophene, and polythiophene-derivatives) is also discussed.
 
 

Active material and interphase structures governing performance in sodium and potassium ion batteries.

Development of energy storage systems is a topic of broad societal and economic relevance, and lithium ion batteries (LIBs) are currently the most advanced electrochemical energy storage systems. However, concerns on the scarcity of lithium sources and consequently the expected price increase have driven the development of alternative energy storage systems beyond LIBs. In the search for sustainable and cost-effective technologies, sodium ion batteries (SIBs) and potassium ion batteries (PIBs) have attracted considerable attention. Here, a comprehensive review of ongoing studies on electrode materials for SIBs and PIBs is provided in comparison to those for LIBs, which include layered oxides, polyanion compounds and Prussian blue analogues for positive electrode materials, and carbon-based and alloy materials for negative electrode materials. The importance of the crystal structure for electrode materials is discussed with an emphasis placed on intrinsic and dynamic structural properties and electrochemistry associated with alkali metal ions. The key challenges for electrode materials as well as the interface/interphase between the electrolyte and electrode materials, and the corresponding strategies are also examined. The discussion and insights presented in this review can serve as a guide regarding where future investigations of SIBs and PIBs will be directed.

БЕЗКАРБОНОВІ СИСТЕМИ ЕНЕРГОЗАБЕЗПЕЧЕННЯ ЖИТЛОВОГО ФОНДУ В КОНТЕКСТІ ЕНЕРГЕТИЧНОЇ БЕЗПЕКИ

The article analyzes the main features of the EU energy policy in the building stock, which is aimed at achieving climate neutrality by the middle of the current century. The main directions and technologies related to the energy and climate safety of energy supply systems of the building stock are highlighted. At the same time, special attention is paid to the need to transition to energy- and environmentally-efficient decarbonized centralized and decentralized energy supply systems with the prospect of full electrification of heat supply systems. The importance of further intensive development of energy storage systems in daily and seasonal cycles is indicated as an important condition of the carbon-free energy market. The possibility of using ecologically improved technologies of heat generation on natural gas within certain time limits is also noted.

Renewable Energy and Energy Innovations: Examining Relationships Using Markov Switching Regression Model

Accelerating the development of new energy infrastructure in the EU based on renewable energy sources is necessary for the targeted reduction of greenhouse gas emissions and increase in energy production from renewable sources. This article reviews current renewable energy development issues and research on energy innovations within the European energy policy. The effectiveness of energy generation from renewable resources and adaptation of energy innovations may be limited to the challenges of ensuring the flexibility of the pan-European energy system, as the development of energy storage systems and technologies to respond to demand is much slower than the development of renewable energy. Therefore, the study's primary purpose was to explain by mathematical modelling the determinism of variation in electricity production in the EU27 due to predictors of net electricity generation from certain types of renewable resources for 2017-2020. To identify the effects of the deployment of renewable energy in the EU27, a regression model of Markov switching for three regimes was chosen, consisting of selected predictors of clean energy generation from renewable sources (hydro, geothermal, wind, and solar). The statsmodels v0.13.2 toolkit in Python 3.10.5 was used to conduct this study. The variation between total electricity production and net electricity generation in the EU27 is not constant and depends on the mode of electricity production. That is, there is an asymmetry in the relationship between these parameters. The results also show that when the electricity generation rate in the EU27 is moderate, the net wind energy generation rate is not significant. Furthermore, the negative link between clean solar energy generation and electricity production in the EU is significant for all three regimes.

A Review of World-wide Advanced Pumped Storage Hydropower Technologies

After the 21st UN Climate Change Conference, Net Zero Emissions (NZE) has become a hot issue in the power industry all over the world. The use of renewable energy for power generation will highly increase in the future. However, renewable energy power generation is limited by the uncertainty of renewable resources, which is easy to cause an imbalance between supply and demand. In order to eliminate the impact of renewable energy generators on the power system, the development of energy storage systems is most important. Pumped storage hydropower (PSH) is very popular because of its large capacity and low cost. The current main pumped storage hydropower technologies are conventional pumped storage hydropower (C-PSH), adjustable speed pumped storage hydropower (AS-PSH) and ternary pumped storage hydropower (T-PSH). This paper aims to analyze the principles, advantages and disadvantages of various PSH technologies, and provide a selection reference for future PSH expansion and replacement. In addition, this paper using a case for explain the T-PSH operating.

Distributed energy storage planning method considering multi-point aggregation effect

ABSTRACT The economic performance and utilization rate have become the key factors limiting the development of energy storage systems (ESS). From the perspective of the aggregation effect manifested by multi-point ESS, an inspired concept of “aggregation configuration, decentralized location” is proposed. Based on this concept, this paper proposes a planning method using two-stage optimization including sizing, siting and operational optimization for distributed energy storage (DES). The first-stage optimization aims to maximize the net present value (NPV) of aggregate ESS, while the second stage aims to mitigate the voltage fluctuation after the integration of distributed PV generation. In addition, the operational optimization for both the aggregate ESS and individual DES units are considered to better achieve the objectives of the two-stage optimization, and the particle swarm optimization (PSO) algorithm is employed to solve the planning problem. Case studies show that the proposed method helps to ensure the global NPV over the lifespan of aggregate ESS by considering operational optimization and depth of charge (DOD). Compared with the centralized ESS solution, the proposed multi-point DES solution can improve the overall voltage fluctuation mitigation capability by more than 40%. With the PV capacity penetration rate varying from 0 ~ 210%, sensitivity analysis reveals that when the penetration rate is close to 100%, the aggregate ESS has better economic performance and voltage fluctuation mitigation capability.

Optimal sizing and deployment of gravity energy storage system in hybrid PV-Wind power plant

The world today is continuously tending toward clean energy technologies. Renewable energy sources are receiving more and more attention. Furthermore, there is an increasing interest in the development of energy storage systems which meet some specific design requirements such as structural rigidity, cost effectiveness, life-cycle impact, and increased energy capacity. Gravity energy storage (GES) is one of those innovative storage technologies that is still under development. Hence, this study proposes a new methodology which aims to optimally design and deploy a large-scale GES system in a hybrid PV-Wind plant to make it more competitive technically and economically. The objective of this study is to minimize GES construction cost restricted by handling mechanical load applied on the system's structure. The sizing methodology is based on genetic optimization algorithm which aims to determine the optimum dimensions of GES components. A case study has been used to verify the effectiveness of the proposed model. The findings of this study have shown that the optimal system's height is about 48 m with a diameter of 24 m and a wall thickness of 3m. The construction cost of the system reaches 6.7 M€ with the piston representing the largest cost share. The cost of electricity was found equals to 0.19 €/kWh. In addition, this work investigates the integration of GES with a hybrid wind-solar grid-connected power plant to properly dispatch renewable power by incorporating an efficient storage strategy preventing overcharging/discharging of GES. The findings demonstrate the ability of this new storage system to balance the energy supply and demand. A comparison between the obtained results with that of a battery energy storage has shown that GES performs better due to its high DOD and lifetime, as well as its good efficiency.

Di-oxidant sandwich-type polymerization strategy of polypyrrole on CNTs@wool felt for supercapacitors

Optimization of mass loading and intrinsic structure of polypyrrole (PPy) materials plays decisive roles in the development of energy storage systems to meet the increasing requirements. A di-oxidant sandwich-type polymerization (designated as DOSP) method was developed to synthesize PPy on the surface of CNTs@wool felt to construct composites (CNTs/PPy-2@wool) by using FeCl3∙6H2O and MnO2 as di-oxidant. Under acidic conditions, MnO2 acts as both a sacrificial template and oxidant to initiate the polymerization of pyrrole (Py) monomers on its freshly activated surface to obtain CNTs/PPy-2@wool. Furthermore, MnO2 could effectively adsorb Py monomers, and the adsorbed Py monomers were oxidatived to PPy, resulting in the efficient adsorption and high mass loading of PPy (13.44 mg cm−2) on the CNTs@wool felt surface. As a result, the CNTs/PPy-2@wool electrode showed an areal capacitance of 2303.9 mF cm−2 at a current density of 0.25 mA cm−2 in 1 M H2SO4 solution, delivering a max energy density of 204.79 μWh cm−2 at a power density of 457.93 μW cm−2. Moreover, the device exhibited good rate capability with capacitance retentions over 65% when the current density increased from 0.25 mA cm−2 to 2 mA cm−2 and a long-term life with 84.29% of initial capacitance after 1000 cycles. The potential application of the proposed CNTs/PPy@wool felt as electrode materials for various integrated energy storage devices.

Layered Fe2(MoO4)3 assemblies with pseudocapacitive properties as advanced materials for high-performance sodium-ion capacitors

Sodium-ion capacitors (SICs) show great potential for large-scale energy storage devices due to their high energy-power density, long cycling life, and low cost of sodium. Nevertheless, a daunting challenge to this technology is the sluggish sodium ion diffusion kinetics of the faradaic anode materials, which impede the widespread development of SICs. Herein, uniformly layered Fe2(MoO4)3 (L-FMO) assemblies are prepared though a facile solvothermal-assisted route and used as anode material of SICs for the first time. Benefiting from the improved extrinsic pseudocapacitive contribution, the L-FMO assemblies exhibit fast kinetics, high sodium storage capacity as well as long-term lifetime. Moreover, an initial intercalation-subsequent conversion sodium storage mechanism of L-FMO assemblies is further demonstrated though a series of techniques including in-situ X-ray diffraction, ex-situ transmission electron microscopy as well as ex-situ X-ray photoelectron spectroscopy. When the L-FMO assemblies was applied into SICs, the assembled devices achieve a high-energy-power density (227.2 Wh kg−1, 20.05 kW kg−1) along with good cycling stability (a low capacity decay of only 0.0062% per cycle during 3000 cycles at the current density of 1 A g−1). The present work pioneers alkaline earth metal molybdates for SICs anodes and will push the development of energy storage systems.

Super Na+ Half/Full Batteries and Ultrafast Na+ Diffusion Kinetics of Cobalt‐Nickel Selenide from Assembling Co0.5Ni0.5Se2@NC Nanosheets into Cross‐Stacked Architecture

Main observation and conclusionExploration of advanced anode materials for sodium‐ion batteries (SIBs) is still a big challenge due to the large radius of sodium. In this work, the hierarchical architectures assembled from N‐doped carbon‐coated Co0.5Ni0.5Se2 (Co0.5Ni0.5Se2@NC) nanoparticles encapsulated into cross‐stacked nanosheets have been successfully prepared from the cobalt‐nickel binary‐metal organic frameworks (CoNi‐MOF) by two steps of the solid‐state selenization and carbon coating processes. Importantly, the resultant hierarchical Co0.5Ni0.5Se2@NC architecture can achieve a satisfactory electrochemical performance, maintaining a high‐rate capacity of 330 mA·h·g–1 at 3 A·g–1 and a stable cyclability of 100 cycles without obvious capacity decay at 0.2 A·g–1. The design of distinct superstructure can not only be applied to other electrode materials but also boost the forward development of energy storage systems.

CO2 Reutilization in the Residential Sector Through Power to Gas and Oxyfuel Combustion

A novel concept of Power-to-gas (PtG) has been investigated as a versatile technology for storage and utilization of carbon dioxide coming from energy installations. The proposed PtG solution takes advantage of the synergies of different processes to integrate energy storage efficiently with carbon utilization to produce a ‘CO2 neutral’ natural gas. PtG converts surplus electricity into synthetic natural gas by combining H2 from water electrolysis and CO2 through methanation reaction and oxyfuel combustion. This carbon capture option releases thermal energy from the synthetic fuel producing a near-pure stream of CO2 that close the carbon loop used for methanation. Under this framework, the present work proposes to study and validate the hybridization between Power-to-Gas energy storage technology and CO2 oxyfuel combustion in the residential sector. This combination is a novel strategy focused on solving: (i) the intermittent and seasonal electricity generation from renewable resources; (ii) the large energy and economic penalties associated with CO2 capture and utilization (especially at small scale); (iii) and the development of energy storage systems of small-medium size and high flexibility. This hybridization allows managing the excess of renewable electricity in the Power-to-Gas installation and producing hydrogen (stored energy) and oxygen (by-product). Subsequently, oxygen is used to meet the needs of the oxyfuel combustion process, in this case, in the residential sector, with two important advantages: a high concentration CO2 flow is obtained, and the oxygen production neither requires an air separation unit (ASU) nor additional energy requirements. The stored hydrogen and the captured carbon dioxide are combined by methanation to produce synthetic natural gas stored for future uses. From CO2 capture point of view, the proposed hybrid system presents an additional advantage: there would also be no penalty associated with the compression and underground storage of captured CO2, since it is reused in the oxyfuel burner along with the oxygen, obtained in the electrolyzer, closing the carbon cycle. A PtG installation with recycled CO2 utilization has been designed to fully supply the thermal heating demand and partially the electrical demand of a single-family house located in the northeast of Germany, from a photovoltaic generator. The PtG system's characteristics, the CO2 storage and utilization strategy, the equipment necessary and energy balances are presented and illustrated with a case study. The proposed design can supply the 87% of the energy consumed by a single-family home and avoid the emissions of 2.8 tons of CO2 every year.

Qualitative scenario analysis of development of energy storage systems in Russia until 2035

A stationary energy storage boom is forecast for the next two decades, according to a report by the US consulting firm Bloomberg New Energy Finance (BNEF). BNEF analysts believe that energy storage around the world will grow exponentially, from a modest 9 GW / 17 GWh commissioned by 2018 to 1,095 GW / 2,850 GWh by 2040. Experts call the ongoing global changes a “contributory revolution”. The development of energy storage systems is related to trends in the energy sector, energy costs, political and environmental conditions in the world. Moreover, energy storage technologies can face both general and specific risks. The authors of the article took into account possible risks and carried out a qualitative scenario analysis of the development of energy storage systems in Russia in the future until 2035. The authors used a probability scale to avoid cognitive biases in the scenario assessment. The most likely scenario for the development of ESS today we consider the basic.

Hierarchically activated porous carbon derived from zinc-based fluorine containing metal-organic framework as extremely high specific capacitance and rate performance electrode material for advanced supercapacitors

In this work, a hierarchically activated porous carbon (APC) was synthesized using fluorine-containing metal-organic framework via facile combined carbonization and KOH activation treatments. The influences of activation conditions on the surface structures and electrochemical performance of APC were systematically studied. Afterwards, the electrochemical responses of APC electrode were further assessed from the cyclic voltammetry and galvanostatic charge-discharge examinations by 6 M KOH electrolyte. The as-obtained APC electrode delivered the high specific capacitances of 540.8 and 280 F g−1 at 1 and 500 A g−1, correspondingly with superior capacitance retention of 94% after 250,000 cycles even at 100 A g−1, which is showing that its outstanding capacitance, remarkable rate capacity, and very-long cyclic life. Furthermore, the as-assembled APC-based symmetrical supercapacitor offers a superb energy density of 19 Wh kg−1 at 182 W kg−1, indicating its large-scale application. Thus, this work proposes a potential route to synthesize highly efficient porous carbon material for the future development of energy storage systems.

MARKET MECHANISM FORMATION FOR STIMULATING THE DEVELOPMENT OF ENERGY ACCUMULATION SYSTEMS IN UKRAINE

development of energy storage systems. The current state of energy storage systems in Ukraine is studied. The capacity of the segment of energy storage systems in the energy market, due to the need to meet the requirements of the European Energy Community on the flexibility of the integrated energy system, renewable energy sources and the objective need to use such systems as system service providers. The sufficiency of market and state incentives for the broad application and development of energy storage technologies in the conditions of quasi-competitive and full-scale electricity market of Ukraine is determined, taking into account the perspective tendencies of energy development. The cost and benefit analysis of investment projects for installation and operation of energy storage systems for three most common and prospective types of applications for the Ukrainian electricity market: participation in the market of ancillary system services, participation in the balancing market and system constraints reduction (renewables) is conducted. The sensitivity of project indicators of these types of applications is analyzed depending on the number of parameters: variations in specific capital expenditures, green tariff rates, market prices "day ahead" and market conditions of system services. It is substantiated that in Ukraine the energy storage systems are the most promising as the providers of system services for primary regulation of frequency and power, a sufficient reserve of which is one of the conditions for integration of the Ukrainian power system into the European energy system ENTSO-E, ancillary services through auctions for the provision of primary regulation services with a long-term time horizon. Regarding the prospects for the development of decentralized energy system, it is proved that the development of decentralized storage systems consisting of industrial facilities, substations and other low-capacity energy facilities has great potential with reformatting the energy system architecture to "smart grid" standards to form fundamentally new economic incentives for the development of energy storage systems.