Environmental and economic impact of household energy systems with storage in the UK

Tang, Yuzhou; Cockerill, Tim; Pimm, Andrew J.; Yuan, Xueliang

doi:10.1016/j.enbuild.2021.111304

Cited by 8 publications

(4 citation statements)

References 51 publications

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“…The results found in this research mainly affect the energy storage technology applications of demand shifting and peak reduction and variable supply resource integration. The decarbonization of the electricity systems is promoting and will be expected to have a significant impact on MEFs. , The emissions of structural change for generation technology types are expected to make considerable changes to the emission reduction of the storage system . Storage can be expected to have a significant structural impact on the electricity system, especially the large-scale storage .…”

Section: Discussionmentioning

confidence: 99%

Estimation of Emission Factors from Purchased Electricity for European Countries: Impacts on Emission Reduction of Electricity Storage

Tang

Yuan

et al. 2022

Environ. Sci. Technol.

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To evaluate the reduction brought about by energy storage technology, it is essential to first have accurate data on carbon emissions from electricity consumption. However, when gathering this data by evaluating marginal emission factors (MEFs), previous research measured only generation emissions and direct transfer emissions while ignoring the impact of embodied emissions from the cross-grid transfer. To gather more accurate data, this study constructs an electricity network composed of 28 European countries in 2019 and compares the difference between the MEFs when considering the network-wide emissions and the MEFs when only considering generation emissions and direct transfer emissions for electricity trade (neglecting the indirect emissions in purchased electricity). Three energy storage strategies are adopted to evaluate the carbon emission reduction benefits of energy storage. The results show that the errors in emission accounting and MEF calculation are 7% and 10%, respectively, if the impact of electricity trade is not taken into account. When disregarding the indirect emissions from electricity trade, the errors in emission accounting and MEF calculation are 1%. Implementing wind curtailment reduction strategies for energy storage systems could effectively reduce electricity carbon emissions, more than 200 gCO2/kWh in most countries with 100% storage efficiency. The accuracy of MEFs has a significant impact on the results of energy storage benefits, and the choice of storage strategies has different effects on electricity emissions in the same country. Our methods have general applicability for other regions and countries.

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Section: Discussionmentioning

confidence: 99%

Estimation of Emission Factors from Purchased Electricity for European Countries: Impacts on Emission Reduction of Electricity Storage

Tang

Yuan

et al. 2022

Environ. Sci. Technol.

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“…A residential BESS can be added to PV-equipped households either as part of the PVsystem (DC-coupled) or AC-coupled, where an AC-coupled configuration is more easily fitted for existing PV installations, but this comes with a decreased efficiency due to more conversion stages (AC/DC, DC/AC) when charging from PV [10]. Studies on lithium-ion BESS profitability have been conducted, for example, in [11,15,16,24,27,28], revealing a range of different BESS assumptions. These studies employed different values for the depth of discharge, ranging from 100% to values as low as 60% to avoid deep discharges, which are detrimental to lithium-ion batteries [29].…”

Section: Related Workmentioning

confidence: 99%

“…Battery end of life is often expressed as the number of cycles after which 80% of the original capacity is left, and this number varies between 4000 and 6400 cycles, and is sometimes combined with an extra annual degradation factor or a fixed calendar lifetime [15,16,24,27]. In [11,28], it is expressed in years, both assuming a lifetime of 10 years. Furthermore, different assumptions have been made about AC-and DC-coupling, battery charging/discharging efficiency, and inverter efficiency, with mentioned round-trip efficiencies between 84% and 95%, neglecting the influence that factors like charging and discharging power, ambient temperature, and battery age can have on the efficiency [29].…”

Section: Related Workmentioning

confidence: 99%

“…In this study, only potential financial benefits of a residential BESS were considered. However, other aspects should also be considered before stimulating the adoption of residential BESSs, including the environmental impact of a BESS through a life cycle assessment [28] and effects on the grid. Moreover, it should also be considered what prospected payback period do households consider an attractive investment for a BESS.…”

Section: Residential Bess Adoptionmentioning

confidence: 99%

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Techno-Economic Assessment of Battery Systems for PV-Equipped Households with Dynamic Contracts: A Case Study of The Netherlands

Dam,

van der Laan

2024

Energies

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Dynamic energy contracts, offering hourly varying day-ahead prices for electricity, create opportunities for a residential Battery Energy Storage System (BESS) to not just optimize the self-consumption of solar energy but also capitalize on price differences. This work examines the financial potential and impact on the self-consumption of a residential BESS that is controlled based on these dynamic energy prices for PV-equipped households in the Netherlands, where this novel type of contract is available. Currently, due to the Dutch Net Metering arrangement (NM) for PV panels, there is no financial incentive to increase self-consumption, but policy shifts are debated, affecting the potential profitability of a BESS. In the current situation, the recently proposed NM phase-out and the general case without NM are studied using linear programming to derive optimal control strategies for these scenarios. These are used to assess BESS profitability in the latter cases combined with 15 min smart meter data of 225 Dutch households to study variations in profitability between households. It follows that these variations are linked to annual electricity demand and feed-in pre-BESS-installation. A residential BESS that is controlled based on day-ahead prices is currently not generally profitable under any of these circumstances: Under NM, the maximum possible annual yield for a 5 kWh/3.68 kW BESS with day-ahead prices as in 2023 is EUR 190, while in the absence of NM, the annual yield per household ranges from EUR 93 to EUR 300. The proposed NM phase-out limits the BESS’s profitability compared to the removal of NM.

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Considerations for estimating operational greenhouse gas emissions in whole building life-cycle assessments

Greer,

Raftery,

Horvath

2024

Building and Environment

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Environmental and economic impact of household energy systems with storage in the UK

Cited by 8 publications

References 51 publications

Estimation of Emission Factors from Purchased Electricity for European Countries: Impacts on Emission Reduction of Electricity Storage

Estimation of Emission Factors from Purchased Electricity for European Countries: Impacts on Emission Reduction of Electricity Storage

Techno-Economic Assessment of Battery Systems for PV-Equipped Households with Dynamic Contracts: A Case Study of The Netherlands

Considerations for estimating operational greenhouse gas emissions in whole building life-cycle assessments

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