DEPARTMENT OF ECONOMICS ISSN 1441-5429 DISCUSSION PAPER 03/15 Conditional Convergence in US Disaggregated Petroleum Consumption at the Sector Level Hooi Hooi Leana and Russell Smythb Abstract: We test for convergence in disaggregated petroleum consumption at the sector level for the United States using the recently proposed GARCH unit root test, suitable for high frequency data. We find evidence of convergence for just over half of the series, including total petroleum consumption in each sector and approximately three quarters of the disaggregated petroleum consumption series in transportation. Keywords: Convergence; Petroleum consumption, Unit root, United States a Hooi Hooi Lean, Economics Program, School of Social Sciences, Unversiti Sains Malaysia; 11800 Pulau Pinang Malaysia; email:
[email protected];
[email protected]; Phone: 04 653 2663 b Department of Economics, Monash University, Australia © 2015 Hooi Hooi Lean and Russell Smyth All rights reserved. No part of this paper may be reproduced in any form, or stored in a retrieval system, without the prior written permission of the author monash.edu/ business-economics ABN 12 377 614 012 CRICOS Provider No. 00008C 1. Introduction Beginning with Narayan and Smyth (2007) a large literature exists that tests for a unit root in energy consumption. This literature is reviewed in Smyth (2013). More recently, a smaller literature has developed which applies unit root tests to test for conditional convergence in energy consumption. Evidence on the existence, or otherwise, of conditional convergence in energy consumption can prove insightful for determining whether policies designed to reduce the intensity of energy consumption are effective. In the case of policies designed to reduce the intensity of fossil fuel consumption, this also has further implications for the efficacy of efforts aimed at reducing greenhouse gas emissions and curtailing global warming.