Thermal Energy Storage for Electricity Peakdemand Mitigation: A Solution in Developing and Developed World Alike

TitleThermal Energy Storage for Electricity Peakdemand Mitigation: A Solution in Developing and Developed World Alike
Publication TypeConference Proceedings
Refereed DesignationRefereed
LBNL Report NumberLBNL-6308E
Year of Publication2013
AuthorsDeForest, Nicholas, Gonçalo Mendes, Michael Stadler, Wei Feng, Judy Lai, and Chris Marnay
Conference NameECEEE 2013 Summer Study 3–8 June 2013, Belambra Les Criques, France
Date Published06/2013
Conference LocationBelambra Les Criques, France
Keywordselectricity, energy storage, Energy System Planning & Grid Integration, peakdemand mitigation, thermal
Abstract

In much of the developed world, air-conditioning in buildings is the dominant driver of summer peak electricity demand. In the developing world a steadily increasing utilization of air-conditioning places additional strain on already-congested grids. This common thread represents a large and growing threat to the reliable delivery of electricity around the world, requiring capital-intensive expansion of capacity and draining available investment resources. Thermal energy storage (TES), in the form of ice or chilled water, may be one of the few technologies currently capable of mitigating this problem cost effectively and at scale. The installation of TES capacity allows a building to meet its on-peak air conditioning load without interruption using electricity purchased off-peak and operating with improved thermodynamic efficiency. In this way, TES has the potential to fundamentally alter consumption dynamics and reduce impacts of air conditioning. This investigation presents a simulation study of a large office building in four distinct geographical contexts: Miami, Lisbon, Shanghai, and Mumbai. The optimization tool DER-CAM (Distributed Energy Resources Customer Adoption Model) is applied to optimally size TES systems for each location. Summer load profiles are investigated to assess the effectiveness and consistency in reducing peak electricity demand. Additionally, annual energy requirements are used to determine system cost feasibility, payback periods and customer savings under local utility tariffs.

Refereed DesignationRefereed
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