Year-round daylight saving time will save more energy in India than corresponding DST or time zones

Ahuja, Dilip R and Sen Gupta, DP (2012) Year-round daylight saving time will save more energy in India than corresponding DST or time zones. Energy Policy, 42. pp. 657-669. ISSN 0301-4215

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Abstract: Many countries have experimented with daylight saving time (DST) to save energy and to align human activities more closely to the daily cycle of light and darkness. Using a novel methodology, we estimate the year-round energy savings to be obtained from advancing Indian Standard Time (IST), from the introduction of DST, and from dividing the country into two time zones. We find that the option of advancing IST consistently saves more energy than the corresponding DST option, which in turn saves more energy than the corresponding time zones option. This is because the energy benefits of advancing IST accrue for the entire year throughout the country, whereas the benefits of DST are confined to summer months and the benefits of two time zones are largely in the lower energy consuming eastern region. We recommend advancing IST by half-hour to being six hours ahead of UTC. This confers the advantages of DST and time zones without their disadvantages and is forecast to save more than 2 billion kWh of electricity every year during evening peaks that are difficult to supply. While these results are India-specific, similar exercises would be useful to many other countries.
Item Type: Journal Paper
Additional Information: Copyright belongs to the Publisher
Keywords: Year-round daylight saving time; Daylight saving time; Time zones
Subjects: School of Natural and Engineering Sciences > Energy
Divisions: Schools > Natural Sciences and Engineering
Date Deposited: 30 Jan 2012 04:50
Last Modified: 08 May 2015 09:56
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    Funders: UNSPECIFIED
    Projects: UNSPECIFIED
    DOI: 10.1016/j.enpol.2011.12.043

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