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The addition of heat pump electricity load profiles to GB electricity demand: Evidence from a heat pump field trial

Love, JA; Smith, AZP; Watson, S; Oikonomou, E; Summerfield, A; Gleeson, C; Biddulph, P; ... Lowe, R; + view all (2017) The addition of heat pump electricity load profiles to GB electricity demand: Evidence from a heat pump field trial. Applied Energy , 204 pp. 332-342. 10.1016/j.apenergy.2017.07.026. Green open access

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Abstract

Previous studies on the effect of mass uptake of heat pumps on the capability of local or national electricity grids have relied on modelling or small datasets to create the aggregated heat pump load profile. This article uses the UK Renewable Heat Premium Payment dataset, which records the electricity consumption of nearly 700 domestic heat pump installations every 2 minutes, to create an aggregated load profile using an order of magnitude more sites than previously available. The aggregated profile is presented on cold and medium winter weekdays and weekends and is shown to contain two peaks per day, dropping overnight to around 40% of its peak. After Diversity Maximum Demand (ADMD) for the population of heat pumps is calculated as 1.7 kW per site; this occurs in the morning, whereas the peak national grid demand occurs in the evening. Analysis is carried out on how heat pump ADMD varies with number of heat pumps in the sample. A simple upscaling exercise is presented to give a first order approximation of the increase in GB peak electricity demand with mass deployment of heat pumps. It is found that peak grid demand increases by 7.5 GW (14%) with 20% of households using heat pumps. The effect of the same heat pump uptake on grid ramp rate is also discussed; this effect is found to be minor. Finally, a comparison of heat pump and gas boiler operation is given, discussing day and night time operation and mean and peak power at different external temperatures.

Type: Article
Title: The addition of heat pump electricity load profiles to GB electricity demand: Evidence from a heat pump field trial
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.apenergy.2017.07.026
Publisher version: http://doi.org/10.1016/j.apenergy.2017.07.026
Language: English
Additional information: Crown Copyright © 2017 Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
Keywords: Heat pump; Load profile; Empirical; Electricity grid; Diversity; Domestic
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment > Bartlett School Env, Energy and Resources
URI: https://discovery.ucl.ac.uk/id/eprint/1566603
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