Modelling the causal linkages among residential electricity consumption, gross domestic product, price of electricity, price of electric appliances, population and foreign direct investment in Malaysia
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- Bloch, Harry & Rafiq, Shuddhasattwa & Salim, Ruhul, 2015. "Economic growth with coal, oil and renewable energy consumption in China: Prospects for fuel substitution," Economic Modelling, Elsevier, vol. 44(C), pages 104-115.
- Lee Lian Ivy-Yap & Hussain Ali Bekhet, 2015. "Examining the Feedback Response of Residential Electricity Consumption towards Changes in its Determinants: Evidence from Malaysia," International Journal of Energy Economics and Policy, Econjournals, vol. 5(3), pages 772-781.
- Farhani, Sahbi & Shahbaz, Muhammad & Arouri, Mohamed & Teulon, Frédéric, 2014.
"The role of natural gas consumption and trade in Tunisia's output,"
Energy Policy, Elsevier, vol. 66(C), pages 677-684.
- Farhani, Sahbi & Shahbaz, Muhammad, 2013. "The Role of Natural Gas Consumption and Trade in Tunisia’s Output," MPRA Paper 48083, University Library of Munich, Germany, revised 05 Jun 2013.
- Mohamed Arouri & Sahbi Farhani & Muhammad Shahbaz & Frédéric Teulon, 2014. "The Role of Natural Gas Consumption and Trade in Tunisia’s Output," Working Papers 2014-57, Department of Research, Ipag Business School.
- Farhani, Sahbi & Shahbaz, Muhammad & Arouri, Mohammed, 2013. "The Role of Natural Gas Consumption and Trade in Tunisia’s Output," MPRA Paper 49260, University Library of Munich, Germany, revised 21 Aug 2013.
- Hamdi, Helmi & Sbia, Rashid & Shahbaz, Muhammad, 2014.
"The nexus between electricity consumption and economic growth in Bahrain,"
Economic Modelling, Elsevier, vol. 38(C), pages 227-237.
- Hamdi, Helmi & Sbia, Rashid & Shahbaz, Muhammad, 2013. "The Nexus between Electricity Consumption and Economic Growth in Bahrain," MPRA Paper 48472, University Library of Munich, Germany, revised 19 Jul 2013.
- Helmi Hamdi & Rashid Sbia & Muhammad Shahbaz, 2014. "The nexus between electricity consumption and economic growth in Bahrain," Post-Print halshs-01902777, HAL.
- Fell, Harrison & Li, Shanjun & Paul, Anthony, 2014.
"A new look at residential electricity demand using household expenditure data,"
International Journal of Industrial Organization, Elsevier, vol. 33(C), pages 37-47.
- Fell, Harrison & Li, Shanjun & Paul, Anthony, 2010. "A New Look at Residential Electricity Demand Using Household Expenditure Data," RFF Working Paper Series dp-10-57, Resources for the Future.
- Harrison Fell & Shanjun Li & Anthony Paul, 2012. "A New Look at Residential Electricity Demand Using Household Expenditure Data," Working Papers 2012-04, Colorado School of Mines, Division of Economics and Business.
- Chen, Sheng-Tung & Kuo, Hsiao-I & Chen, Chi-Chung, 2007. "The relationship between GDP and electricity consumption in 10 Asian countries," Energy Policy, Elsevier, vol. 35(4), pages 2611-2621, April.
- repec:ipg:wpaper:2014-057 is not listed on IDEAS
- Shahbaz, Muhammad & Lean, Hooi Hooi, 2012.
"The dynamics of electricity consumption and economic growth: A revisit study of their causality in Pakistan,"
Energy, Elsevier, vol. 39(1), pages 146-153.
- Muhammad, Shahbaz & Lean, Hooi Hooi, 2011. "The Dynamics of Electricity Consumption and Economic Growth:A Revisit Study of Their Causality in Pakistan," MPRA Paper 33196, University Library of Munich, Germany, revised 06 Sep 2011.
- Jamil, Faisal & Ahmad, Eatzaz, 2010. "The relationship between electricity consumption, electricity prices and GDP in Pakistan," Energy Policy, Elsevier, vol. 38(10), pages 6016-6025, October.
- Kwiatkowski, Denis & Phillips, Peter C. B. & Schmidt, Peter & Shin, Yongcheol, 1992.
"Testing the null hypothesis of stationarity against the alternative of a unit root : How sure are we that economic time series have a unit root?,"
Journal of Econometrics, Elsevier, vol. 54(1-3), pages 159-178.
- Kwiatkowski, D. & Phillips, P.C.B. & Schmidt, P., 1990. "Testing the Null Hypothesis of Stationarity Against the Alternative of Unit Root : How Sure are we that Economic Time Series have a Unit Root?," Papers 8905, Michigan State - Econometrics and Economic Theory.
- Denis Kwiatkowski & Peter C.B. Phillips & Peter Schmidt, 1991. "Testing the Null Hypothesis of Stationarity Against the Alternative of a Unit Root: How Sure Are We That Economic Time Series Have a Unit Root?," Cowles Foundation Discussion Papers 979, Cowles Foundation for Research in Economics, Yale University.
- Athukorala, P.P.A Wasantha & Wilson, Clevo, 2010. "Estimating short and long-term residential demand for electricity: New evidence from Sri Lanka," Energy Economics, Elsevier, vol. 32(Supplemen), pages 34-40, September.
- Filippini, Massimo & Pachauri, Shonali, 2004.
"Elasticities of electricity demand in urban Indian households,"
Energy Policy, Elsevier, vol. 32(3), pages 429-436, February.
- Massimo Filippini & Shonali Pachauri, 2002. "Elasticities of Electricity Demand in Urban Indian Households," CEPE Working paper series 02-16, CEPE Center for Energy Policy and Economics, ETH Zurich.
- Solarin, Sakiru Adebola & Shahbaz, Muhammad, 2015.
"Natural gas consumption and economic growth: The role of foreign direct investment, capital formation and trade openness in Malaysia,"
Renewable and Sustainable Energy Reviews, Elsevier, vol. 42(C), pages 835-845.
- Solarin, Sakiru Adebola & Shahbaz, Muhammad, 2015. "Natural Gas Consumption and Economic Growth: The Role of Foreign Direct Investment, Capital Formation and Trade Openness in Malaysia," MPRA Paper 67225, University Library of Munich, Germany, revised 14 Oct 2015.
- Asafu-Adjaye, John, 2000.
"The relationship between energy consumption, energy prices and economic growth: time series evidence from Asian developing countries,"
Energy Economics, Elsevier, vol. 22(6), pages 615-625, December.
- Asafu-Adjaye, John, 1999. "The relationship between energy consumption, energy prices and economic growth: Time series evidence from Asian developing countries," 1999 Conference (43th), January 20-22, 1999, Christchurch, New Zealand 123754, Australian Agricultural and Resource Economics Society.
- Tang, Chor Foon, 2008. "A re-examination of the relationship between electricity consumption and economic growth in Malaysia," Energy Policy, Elsevier, vol. 36(8), pages 3067-3075, August.
- Adom, Philip Kofi & Bekoe, William & Akoena, Sesi Kutri Komla, 2012. "Modelling aggregate domestic electricity demand in Ghana: An autoregressive distributed lag bounds cointegration approach," Energy Policy, Elsevier, vol. 42(C), pages 530-537.
- Sbia, Rashid & Shahbaz, Muhammad & Hamdi, Helmi, 2014.
"A contribution of foreign direct investment, clean energy, trade openness, carbon emissions and economic growth to energy demand in UAE,"
Economic Modelling, Elsevier, vol. 36(C), pages 191-197.
- Sbia, Rashid & Shahbaz, Muhammad & Hamdi, Helmi, 2013. "A Contribution of Foreign Direct Investment, Clean Energy, Trade Openness, Carbon Emissions and Economic Growth to Energy Demand in UAE," MPRA Paper 48675, University Library of Munich, Germany, revised 27 Jul 2013.
- Rashid Sbia & Muhammad Shahbaz & Helmi Hamdi, 2014. "A contribution of foreign direct investment, clean energy, trade openness, carbon emissions and economic growth to energy demand in UAE," Post-Print halshs-01902774, HAL.
- M. Hashem Pesaran & Yongcheol Shin & Richard J. Smith, 2001. "Bounds testing approaches to the analysis of level relationships," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 16(3), pages 289-326.
- Fei, Li & Dong, Suocheng & Xue, Li & Liang, Quanxi & Yang, Wangzhou, 2011. "Energy consumption-economic growth relationship and carbon dioxide emissions in China," Energy Policy, Elsevier, vol. 39(2), pages 568-574, February.
- Odhiambo, Nicholas M., 2009. "Electricity consumption and economic growth in South Africa: A trivariate causality test," Energy Economics, Elsevier, vol. 31(5), pages 635-640, September.
- Ziramba, Emmanuel, 2008. "The demand for residential electricity in South Africa," Energy Policy, Elsevier, vol. 36(9), pages 3460-3466, September.
- Hussain Ali Bekhet & Lee Lian Ivy-Yap, 2014. "Highlighting Energy Policies and Strategies for the Residential Sector in Malaysia," International Journal of Energy Economics and Policy, Econjournals, vol. 4(3), pages 448-456.
- Mohamed Amine Boutabba, 2014. "The impact of financial development, income, energy and trade on carbon emissions: Evidence from the Indian economy," Post-Print hal-02877966, HAL.
- Theologos Dergiades & Lefteris Tsoulfidis, 2011. "Revisiting residential demand for electricity in Greece: new evidence from the ARDL approach to cointegration analysis," Empirical Economics, Springer, vol. 41(2), pages 511-531, October.
- Nakajima, Tadahiro, 2010. "The residential demand for electricity in Japan: An examination using empirical panel analysis techniques," Journal of Asian Economics, Elsevier, vol. 21(4), pages 412-420, August.
- Ozturk, Ilhan, 2010. "A literature survey on energy-growth nexus," Energy Policy, Elsevier, vol. 38(1), pages 340-349, January.
- Caraiani, Chirața & Lungu, Camelia I. & Dascălu, Cornelia, 2015. "Energy consumption and GDP causality: A three-step analysis for emerging European countries," Renewable and Sustainable Energy Reviews, Elsevier, vol. 44(C), pages 198-210.
- Imen Gam & Jaleleddine Ben Rejeb, 2012. "How Can We Assess the Relation Between Equipment, Price and Electricity Demand in Tunisia?," International Journal of Energy Economics and Policy, Econjournals, vol. 2(3), pages 159-166.
- Holtedahl, Pernille & Joutz, Frederick L., 2004. "Residential electricity demand in Taiwan," Energy Economics, Elsevier, vol. 26(2), pages 201-224, March.
- Bekhet, Hussain Ali & Matar, Ali, 2013. "Co-integration and causality analysis between stock market prices and their determinates in Jordan," Economic Modelling, Elsevier, vol. 35(C), pages 508-514.
- Masih, Abul M. M. & Masih, Rumi, 1996. "Energy consumption, real income and temporal causality: results from a multi-country study based on cointegration and error-correction modelling techniques," Energy Economics, Elsevier, vol. 18(3), pages 165-183, July.
- Halicioglu, Ferda, 2007. "Residential electricity demand dynamics in Turkey," Energy Economics, Elsevier, vol. 29(2), pages 199-210, March.
- Godwin Effiong Akpan & Usenobong Friday Akpan, 2012. "Electricity Consumption, Carbon Emissions and Economic Growth in Nigeria," International Journal of Energy Economics and Policy, Econjournals, vol. 2(4), pages 292-306.
- Pesaran, H. Hashem & Shin, Yongcheol, 1998.
"Generalized impulse response analysis in linear multivariate models,"
Economics Letters, Elsevier, vol. 58(1), pages 17-29, January.
- Pesaran, M. H. & Shin, Y., 1997. "Generalised Impulse Response Analysis in Linear Multivariate Models," Cambridge Working Papers in Economics 9710, Faculty of Economics, University of Cambridge.
- Amusa, Hammed & Amusa, Kafayat & Mabugu, Ramos, 2009. "Aggregate demand for electricity in South Africa: An analysis using the bounds testing approach to cointegration," Energy Policy, Elsevier, vol. 37(10), pages 4167-4175, October.
- Oh, Tick Hui & Pang, Shen Yee & Chua, Shing Chyi, 2010. "Energy policy and alternative energy in Malaysia: Issues and challenges for sustainable growth," Renewable and Sustainable Energy Reviews, Elsevier, vol. 14(4), pages 1241-1252, May.
- Ho, Chun-Yu & Siu, Kam Wing, 2007.
"A dynamic equilibrium of electricity consumption and GDP in Hong Kong: An empirical investigation,"
Energy Policy, Elsevier, vol. 35(4), pages 2507-2513, April.
- Chun-Yu Ho & Kam Wing Siu, 2006. "A Dynamic Equilibrium of Electricity Consumption and GDP in Hong Kong: An Empirical Investigation," Boston University - Department of Economics - Working Papers Series WP2006-049, Boston University - Department of Economics.
- Jumbe, Charles B. L., 2004. "Cointegration and causality between electricity consumption and GDP: empirical evidence from Malawi," Energy Economics, Elsevier, vol. 26(1), pages 61-68, January.
- Glasure, Yong U., 2002. "Energy and national income in Korea: further evidence on the role of omitted variables," Energy Economics, Elsevier, vol. 24(4), pages 355-365, July.
- Lau, Lin-Sea & Choong, Chee-Keong & Eng, Yoke-Kee, 2014. "Investigation of the environmental Kuznets curve for carbon emissions in Malaysia: Do foreign direct investment and trade matter?," Energy Policy, Elsevier, vol. 68(C), pages 490-497.
- Gam, Imen & Ben Rejeb, Jaleleddine, 2012. "Electricity demand in Tunisia," Energy Policy, Elsevier, vol. 45(C), pages 714-720.
- Chandran, V.G.R. & Sharma, Susan & Madhavan, Karunagaran, 2010. "Electricity consumption-growth nexus: The case of Malaysia," Energy Policy, Elsevier, vol. 38(1), pages 606-612, January.
- Narayan, Paresh Kumar & Smyth, Russell & Prasad, Arti, 2007. "Electricity consumption in G7 countries: A panel cointegration analysis of residential demand elasticities," Energy Policy, Elsevier, vol. 35(9), pages 4485-4494, September.
- Yoo, Seung-Hoon, 2005. "Electricity consumption and economic growth: evidence from Korea," Energy Policy, Elsevier, vol. 33(12), pages 1627-1632, August.
- Richard J. Cebula, 2012. "US residential electricity consumption: the effect of states' pursuit of energy efficiency policies," Applied Economics Letters, Taylor & Francis Journals, vol. 19(15), pages 1499-1503, October.
- Tang, Chor Foon & Tan, Eu Chye, 2013. "Exploring the nexus of electricity consumption, economic growth, energy prices and technology innovation in Malaysia," Applied Energy, Elsevier, vol. 104(C), pages 297-305.
- Morimoto, Risako & Hope, Chris, 2004. "The impact of electricity supply on economic growth in Sri Lanka," Energy Economics, Elsevier, vol. 26(1), pages 77-85, January.
- Boutabba, Mohamed Amine, 2014. "The impact of financial development, income, energy and trade on carbon emissions: Evidence from the Indian economy," Economic Modelling, Elsevier, vol. 40(C), pages 33-41.
- Saidur, R. & Masjuki, H.H. & Jamaluddin, M.Y., 2007. "An application of energy and exergy analysis in residential sector of Malaysia," Energy Policy, Elsevier, vol. 35(2), pages 1050-1063, February.
- Alshehry, Atef Saad & Belloumi, Mounir, 2015. "Energy consumption, carbon dioxide emissions and economic growth: The case of Saudi Arabia," Renewable and Sustainable Energy Reviews, Elsevier, vol. 41(C), pages 237-247.
- 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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- Nor Salwati Othman & Hussain Ali Bekhet, 2021. "Dynamic Effects of Malaysia's Government Spending on Environment Quality: Bridging STIRPAT and EKC Hypothesis," International Journal of Energy Economics and Policy, Econjournals, vol. 11(5), pages 343-355.
- Nor Salwati Othman & Nurul Hezlin Mohamed Hariri, 2021. "Estimating the Causality and Elasticities of Residential Electricity Consumption for Malaysia," International Journal of Energy Economics and Policy, Econjournals, vol. 11(6), pages 335-346.
- Bekhet, Hussain Ali & Othman, Nor Salwati, 2018. "The role of renewable energy to validate dynamic interaction between CO2 emissions and GDP toward sustainable development in Malaysia," Energy Economics, Elsevier, vol. 72(C), pages 47-61.
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Keywords
residential electricity consumption; REC; co-integration; multivariate Granger causalities; dynamic response; Malaysia; modelling; GDP; gross domestic product; electricity prices; electric appliances; population; foreign direct investment; FDI; disposable income; energy security.;All these keywords.
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