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Techno-economic viability of energy storage concepts combined with a residential solar photovoltaic system: A case study from Finland

Puranen, Pietari; Kosonen, Antti; Ahola, Jero (2021-06-05)

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puranen_et_al_techno-economic_viability_publishers_version.pdf (2.032Mb)
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Publishers version

Puranen, Pietari
Kosonen, Antti
Ahola, Jero
05.06.2021

298

Elsevier

Applied Energy

School of Energy Systems

https://doi.org/10.1016/j.apenergy.2021.117199
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi-fe2021060734470

Tiivistelmä

Solar photovoltaic systems have been growing in popularity in prosumer households as a means of increasing the share of renewable energy and decreasing electricity import. The available self-consumption is, however, limited by a temporal supply–demand imbalance. In this paper, options for improving the self-consumption of a prosumer household are studied by using three-year data sets of electricity import and export data from two distinct, real-life cases from Finland. Two separate approaches are analysed: the use of energy storages, physical or monetary, and changing of the electricity metering method. A switch of the electricity metering method from instant phasewise to hourly net metering was found to increase the self-sufficiency by about 3 to 5 percentage points and have an annual monetary benefit of a few tens of euros when a network storage was used. Considering the energy storage methods under study, the network energy storage was found to be more economically feasible than a physical or a virtual battery energy storage, even though a physical battery storage could increase the self-sufficiency as much as by 30 percentage points with a storage capacity of 20 kWh. The studied virtual battery concept was found to limit the profitable solar photovoltaic plant size if high enough storage capacity was not provided. When a physical battery energy storage is used, switching to hourly net metering does not add value to the system. A significant decrease in the system cost is required for a physical battery energy storage to be economically competitive in northern climate conditions.

Lähdeviite

Pietari Puranen, Antti Kosonen, Jero Ahola. (2021). Techno-economic viability of energy storage concepts combined with a residential solar photovoltaic system: A case study from Finland. Applied Energy, 298. 117199. DOI: 10.1016/j.apenergy.2021.117199

Alkuperäinen verkko-osoite

https://www.sciencedirect.com/science/article/pii/S0306261921006231?via%3Dihub
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