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Dynamics Of Electricity Demand In Lesotho: A Kalman Filter Approach

Listed author(s):
  • THAMAE Retselisitsoe Isaiah

    (National University of Lesotho)

  • THAMAE Leboli Zachia

    (National University of Lesotho)

  • THAMAE Thimothy Molefi

    (National University of Lesotho)

Registered author(s):

    This study provides an empirical analysis of the time-varying price and income elasticities of electricity demand in Lesotho for the period 1995-2012 using the Kalman filter approach. The results reveal that economic growth has been one of the main drivers of electricity consumption in Lesotho while electricity prices are found to play a less significant role since they are monopoly-driven and relatively low when compared to international standards. These findings imply that increases in electricity prices in Lesotho might not have a significant impact on consumption in the short-run. However, if the real electricity prices become too high over time, consumers might change their behavior and sensitivity to price and hence, energy policymakers will need to reconsider their impact in the long-run. Furthermore, several exogenous shocks seem to have affected the sensitivity of electricity demand during the period prior to regulation, which made individuals, businesses and agencies to be more sensitive to electricity costs. On the other hand, the period after regulation has been characterized by more stable and declining sensitivity of electricity demand. Therefore, factors such as regulation and changes in the country’s economic activities appear to have affected both price and income elasticities of electricity demand in Lesotho.

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    File URL: http://eccsf.ulbsibiu.ro/RePEc/blg/journl/10112thamae&thamae&thamae.pdf
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    Article provided by Lucian Blaga University of Sibiu, Faculty of Economic Sciences in its journal Studies in Business and Economics.

    Volume (Year): 10 (2015)
    Issue (Month): 1 (April)
    Pages: 130-139

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    Handle: RePEc:blg:journl:v:10:y:2015:i:1:p:130-139
    Contact details of provider: Postal:
    Lucian Blaga University of Sibiu, Faculty of Economic Sciences Dumbravii Avenue, No 17, postal code 550324, Sibiu, Romania

    Phone: 004 0269 210375
    Fax: 004 0269 210375
    Web page: http://economice.ulbsibiu.ro/
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    1. Hunt, Lester C. & Judge, Guy & Ninomiya, Yasushi, 2003. "Underlying trends and seasonality in UK energy demand: a sectoral analysis," Energy Economics, Elsevier, vol. 25(1), pages 93-118, January.
    2. Inglesi-Lotz, R., 2011. "The evolution of price elasticity of electricity demand in South Africa: A Kalman filter application," Energy Policy, Elsevier, vol. 39(6), pages 3690-3696, June.
    3. Hansen, Bruce E, 2002. "Tests for Parameter Instability in Regressions with I(1) Processes," Journal of Business & Economic Statistics, American Statistical Association, vol. 20(1), pages 45-59, January.
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    5. Nakajima, Tadahiro & Hamori, Shigeyuki, 2010. "Change in consumer sensitivity to electricity prices in response to retail deregulation: A panel empirical analysis of the residential demand for electricity in the United States," Energy Policy, Elsevier, vol. 38(5), pages 2470-2476, May.
    6. Johansen, Soren, 1995. "Likelihood-Based Inference in Cointegrated Vector Autoregressive Models," OUP Catalogue, Oxford University Press, number 9780198774501.
    7. Slade, Margaret E., 1989. "Modelling stochastic and cyclical components of technical change : An application of the Kalman filter," Journal of Econometrics, Elsevier, vol. 41(3), pages 363-383, July.
    8. Jamil, Faisal & Ahmad, Eatzaz, 2011. "Income and price elasticities of electricity demand: Aggregate and sector-wise analyses," Energy Policy, Elsevier, vol. 39(9), pages 5519-5527, September.
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