Estimating Residential Water Demand Using the Stone-Geary Functional Form: The Case of Sri Lanka

被引:39
作者
Dharmaratna, Dinusha [1 ]
Harris, Edwyna [1 ]
机构
[1] Monash Univ, Dept Econ, Clayton, Vic 3800, Australia
关键词
Stone-Geary; Water demand; Water pricing; Block pricing; Sri Lanka; UNIT-ROOT TESTS; PRICE; SPECIFICATION; MANAGEMENT; RATES;
D O I
10.1007/s11269-012-0017-1
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
This paper formulates a demand model for residential water in Sri Lanka using the Stone-Geary functional form. This functional form considers water consumption to be composed of two parts-a fixed and a residual component. The presence of these two components means it is possible to estimate a threshold below which water consumption is non-responsive to price changes. In turn, this can provide policy makers with a better understanding of the degree to which price changes will affect water consumption and the extent to which price instruments can be utilised to raise additional revenues. These revenues could then be used to extend pipe-borne water infrastructure to a greater proportion of the population than is currently the case. The findings presented here show the portion of water use that is insensitive to price changes in Sri Lanka is between 0.64 and 1.06 m(3) per capita per month. The results indicate that price elasticity ranges from -0.11 to -0.14 while income elasticity varies from 0.11 to 0.14. Combined, these findings suggest water authorities could raise revenue via price increases to fund critical infrastructure extension.
引用
收藏
页码:2283 / 2299
页数:17
相关论文
共 56 条
[1]   MUNICIPAL DEMAND FOR WATER IN KUWAIT - METHODOLOGICAL ISSUES AND EMPIRICAL RESULTS [J].
ALQUNAIBET, MH ;
JOHNSTON, RS .
WATER RESOURCES RESEARCH, 1985, 21 (04) :433-438
[2]  
[Anonymous], LAND EC
[3]  
[Anonymous], WELFARE DISTRIBUTION
[4]  
[Anonymous], ANN REP 2006 CENTR B
[5]  
[Anonymous], 2006, FACULTY COMMERCE PAP
[6]  
[Anonymous], 1999, PRICING DEMAND ANAL
[7]  
[Anonymous], WATER RESOURCES RES
[8]  
[Anonymous], 402002 FEEM
[9]  
[Anonymous], WATER RESOUR RES
[10]  
[Anonymous], ANN REP 2005 NAT WAT