Market and technology development of PV home storage systems in Germany

Kairies, Kai-Philipp; Figgener, Jan; Haberschusz, David; Wessels, Oliver; Tepe, Benedikt; Sauer, Dirk Uwe

doi:10.1016/j.est.2019.02.023

Cited by 37 publications

(19 citation statements)

References 2 publications

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“…Although lead-acid batteries dominated the market for both grid-connected and off-grid PV systems until approximately 2018, LIBs have prevailed in the market for gridconnected systems from 2016 onwards [44], [45] and are also used in off-grid systems. Existing energy storage systems were presented in [20], [37], and a comparison made between the various battery chemistries available in the market, as well as an analysis of their performances, was included in [46], [47].…”

Section: Use Of Lithium-ion Batteries In Pvwpsmentioning

confidence: 99%

Photovoltaic Water Pumping: Comparison Between Direct and Lithium Battery Solutions

et al. 2021

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This work presents the conversion of a photovoltaic water pumping system (PVWPS) to its corresponding battery-based solution, while maintaining the components of the PVWPS facility and adding the power converter needed to manage the operation of a lithium-ion battery. A complete analysis of the direct PVWPS is performed based on the values obtained by the monitoring system developed for the installation. The efficiencies and performance ratios of the various elements of the facility are calculated, as well as other relevant factors (such as irradiance thresholds). The dependence of some variables on the solar resource is analyzed to model the system. A similar study is carried out in the battery-based solution and a comparative analysis of the two modes of operation is then performed to find which aspects could be improved in the battery-based solution to increase the pumping time and total daily pumped volume. The results presented demonstrate the benefits of including a battery (reduction in start/stop cycles and improved performance on cloudy days). Aspects that can be improved to make the battery-based solution more efficient and achieve better results are suggested.INDEX TERMS Photovoltaic water pumping systems, lithium batteries, battery-based pumping, water pumping, stand-alone photovoltaic system, sustainable development goals.

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Section: Use Of Lithium-ion Batteries In Pvwpsmentioning

confidence: 99%

Photovoltaic Water Pumping: Comparison Between Direct and Lithium Battery Solutions

et al. 2021

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“…Photovoltaic (PV) battery systems for residential power supply, also referred to as home‐storage systems, have shown a significant growth over the past years, connected with a strong decrease in prices. [ 1,2 ] These batteries have typical energy capacities of 5–15 kWh. Adding a battery to a PV system allows to increase self‐sufficiency of the household and self‐consumption of the solar energy, therefore contributes to energy independence and reduces the emission of greenhouse gases.…”

Section: Introductionmentioning

confidence: 99%

“…Both residential‐scale and industry‐scale storage systems are today mostly based on lithium‐ion battery technology. [ 1 ] The systems are typically constructed in a modular way, consisting of battery modules which, in turn, include multiple battery cells connected in series and/or in parallel. [ 5 ] Knowing and understanding the performance characteristics of the single cells in terms of electrical, thermal, and aging properties is of utmost importance for the design and operation of reliable and long‐living systems.…”

Section: Introductionmentioning

confidence: 99%

Electrical and Structural Characterization of Large‐Format Lithium Iron Phosphate Cells Used in Home‐Storage Systems

et al. 2021

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This article presents a comparative experimental study of the electrical, structural, and chemical properties of large‐format, 180 Ah prismatic lithium iron phosphate (LFP)/graphite lithium‐ion battery cells from two different manufacturers. These cells are particularly used in the field of stationary energy storage such as home‐storage systems. The investigations include 1) cell‐to‐cell performance assessment, for which a total of 28 cells are tested from each manufacturer; 2) electrical charge/discharge characteristics at different currents and ambient temperatures; 3) internal cell geometries, components, and weight analysis after cell opening; 4) microstructural analysis of the electrodes via light microscopy and scanning electron microscopy; 5) chemical analysis of the electrode materials using energy‐dispersive X‐ray spectroscopy; and 6) mathematical analysis of the electrode balances. The combined results give a detailed and comparative insight into the cell characteristics, providing the essential information needed for system integration. The study also provides complete and self‐consistent parameter sets for the use in cell models needed for performance prediction or state diagnosis.

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“…The performance assessment of a PV system can be carried out by the means of a mathematical model. Literature provides [3][4][5][6][7][8][9][10][11][12] several contributions that show how the complexity of a model depends on the objectives of the performance assessment, on the modeling hypotheses, and on the available modeling inputs. For instance, the most trivial model must be able to evaluate the expected yearly energy production by the knowledge of the mean solar irradiation.…”

Section: Model Of Photovoltaic Conversion and Battery Storagementioning

confidence: 99%

“…In these last few years, favored by a reduction of the production costs and by an increase in performance, the storage systems have become particularly attractive also within the PV market. In [9], an in-depth overview about the market and technology development of home storage systems in Germany during the years 2013-2018 is presented, showing that the rapid growth of installations has concerned the domestic power plant segment (<6 kWp). Akinyele et al [10] perform a comparison among several storage system technologies for stand-alone PV systems, demonstrating that storage systems can favor independence from the electrical grid.…”

Section: Introductionmentioning

confidence: 99%

Performance and Economic Assessment of a Grid-Connected Photovoltaic Power Plant with a Storage System: A Comparison between the North and the South of Italy

et al. 2019

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Grid-connected low voltage photovoltaic power plants cover most of the power capacity installed in Italy. They offer an important contribution to the power demand of the utilities connected but, due to the nature of the solar resource, the night-time consumption can be satisfied only withdrawing the energy by the national grid, at the price of the energy distributor. Thanks to the improvement of storage technologies, the installation of a system of battery looks like a promising solution by giving the possibility to increase auto-consumption dramatically. In this paper, a model-based approach to analyze and discuss the performance and the economic feasibility of grid-connected domestic photovoltaic power plants with a storage system is presented. Using as input to the model the historical series (2008–2017) of the main ambient variables, the proposed model, based on Stochastic Hybrid Fault Tree Automaton, allowed us to simulate and compare two alternative technical solutions characterized by different environmental conditions, in the north and in the south of Italy. The performances of these systems were compared and an economic analysis, addressing the convenience of the storage systems was carried out, considering the characteristic useful-life time, 20 years, of a photovoltaic power plant. To this end the Net Present Value and the payback time were evaluated, considering the main characteristics of the Italian market scenario.

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Market and technology development of PV home storage systems in Germany

Cited by 37 publications

References 2 publications

Photovoltaic Water Pumping: Comparison Between Direct and Lithium Battery Solutions

Photovoltaic Water Pumping: Comparison Between Direct and Lithium Battery Solutions

Electrical and Structural Characterization of Large‐Format Lithium Iron Phosphate Cells Used in Home‐Storage Systems

Performance and Economic Assessment of a Grid-Connected Photovoltaic Power Plant with a Storage System: A Comparison between the North and the South of Italy

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