Lightening the load: quantifying the potential for energy-efficient lighting to reduce peaks in electricity demand
Lightening the load: quantifying the potential for energy-efficient lighting to reduce peaks in electricity demand
One of the key challenges to greater renewable electricity supplies is the temporal mismatch between non-dispatchable renewable sources and peaks in electricity demand. In addition, increased electrification coupled with the de-carbonisation of electricity generation is likely to increase the scale of demand peaks. This could force investment in carbon-intensive peaker generation or capital intensive storage capacity as well as additional transmission and distribution network capacity which may then be substantially underutilised. Whilst considerable effort has been devoted to testing a range of demand response interventions to reduce or shift consumption, less attention has been given to the ability of certain appliances to permanently reduce demand at peak through energy efficiency. In this paper, we use a published model of future energy-efficient lighting uptake together with multi-year measured lighting demand data from a sample of residential households to model the potential power (MW) and energy (MWh) reductions of a ‘business as usual’ rate of efficient lighting adoption. Our estimates suggest that whilst lighting comprises ~ 4% of overall New Zealand annual electricity consumption, it comprises up to 12% of evening peak electricity consumption in winter. As a result, we estimate that by 2029, more efficient residential lighting could reduce New Zealand’s total annual demand by 1 TWh and reduce the highest winter evening peaks (at 17:00) by at least 500 MW (9%). The winter evening demand reduction would be roughly equivalent to avoiding the need for additional generation capacity of the scale of New Zealand’s Huntly Power Stations 1–4 (coal/gas) plus the Stratford peaker plant (gas open-cycle) and has clear implications for any electricity system that is intending to transition towards ~ 100% renewable generation at least cost.
Efficiency, Lighting, New Zealand, Peak electricity demand, Projection
1105-1118
Dortans, Carsten
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Jack, Michael
41c54c19-a751-464a-b323-0a0b8b0d68c8
Anderson, Ben
01e98bbd-b402-48b0-b83e-142341a39b2d
Stephenson, Janet
f2fec20e-a15a-44c8-9d60-1fec40d3e51f
1 August 2020
Dortans, Carsten
eba869ce-b0e2-4fd4-b2af-47affb54db63
Jack, Michael
41c54c19-a751-464a-b323-0a0b8b0d68c8
Anderson, Ben
01e98bbd-b402-48b0-b83e-142341a39b2d
Stephenson, Janet
f2fec20e-a15a-44c8-9d60-1fec40d3e51f
Dortans, Carsten, Jack, Michael, Anderson, Ben and Stephenson, Janet
(2020)
Lightening the load: quantifying the potential for energy-efficient lighting to reduce peaks in electricity demand.
Energy Efficiency, 13 (6), .
(doi:10.1007/s12053-020-09870-8).
Abstract
One of the key challenges to greater renewable electricity supplies is the temporal mismatch between non-dispatchable renewable sources and peaks in electricity demand. In addition, increased electrification coupled with the de-carbonisation of electricity generation is likely to increase the scale of demand peaks. This could force investment in carbon-intensive peaker generation or capital intensive storage capacity as well as additional transmission and distribution network capacity which may then be substantially underutilised. Whilst considerable effort has been devoted to testing a range of demand response interventions to reduce or shift consumption, less attention has been given to the ability of certain appliances to permanently reduce demand at peak through energy efficiency. In this paper, we use a published model of future energy-efficient lighting uptake together with multi-year measured lighting demand data from a sample of residential households to model the potential power (MW) and energy (MWh) reductions of a ‘business as usual’ rate of efficient lighting adoption. Our estimates suggest that whilst lighting comprises ~ 4% of overall New Zealand annual electricity consumption, it comprises up to 12% of evening peak electricity consumption in winter. As a result, we estimate that by 2029, more efficient residential lighting could reduce New Zealand’s total annual demand by 1 TWh and reduce the highest winter evening peaks (at 17:00) by at least 500 MW (9%). The winter evening demand reduction would be roughly equivalent to avoiding the need for additional generation capacity of the scale of New Zealand’s Huntly Power Stations 1–4 (coal/gas) plus the Stratford peaker plant (gas open-cycle) and has clear implications for any electricity system that is intending to transition towards ~ 100% renewable generation at least cost.
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Dortans 2020 Article Lightening The Load Quantifying
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More information
Accepted/In Press date: 12 May 2020
e-pub ahead of print date: 24 May 2020
Published date: 1 August 2020
Additional Information:
Funding Information:
The work reported in this paper was supported by a University of Otago Writing Bursary, the New Zealand Ministry of Business, Innovation and Employment (Contract No. UOCX1203) and a Marie Sklodowska-Curie Individual Global Fellowship within the H2020 European Framework Programme (2014–2020) under grant agreement no. 700386.
Publisher Copyright:
© 2020, The Author(s).
Keywords:
Efficiency, Lighting, New Zealand, Peak electricity demand, Projection
Identifiers
Local EPrints ID: 441060
URI: http://eprints.soton.ac.uk/id/eprint/441060
ISSN: 1570-646X
PURE UUID: 7c982537-4ca4-4e63-9f2c-7b2378d1ca09
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Date deposited: 28 May 2020 16:58
Last modified: 05 Jun 2024 19:14
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Author:
Carsten Dortans
Author:
Michael Jack
Author:
Janet Stephenson
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