2021-04-122014-01-011133455XWOS;000346891500006SCOPUS;2-s2.0-84907743864http://hdl.handle.net/10784/28021The gas distribution system for natural gas vehicles (NGV) in Colombia is highly concentrated, which gives the retail distributors market power. The pricing mechanism appears to approximate a Bertrand type of oligopolistic model, with a dominant firm setting the prices. An analysis using a Lerner index indicates that the market structure provides markup benefits of about 40[%]. An econometric analysis of the determinants of prices using panel data indicates that variables other than costs affect the retail price of natural gas provided to NGV. © 2014, Universidad de Zaragoza. All rights reserved.engUNIV ZARAGOZAarticleNatural Gas Vehiclemark-up of benefitsmarket powerretail market2021-04-12Garcia, John J.Velasquez, HermilsonMauricio Montenegro, Carlos10.1016/j.apgeog.2014.08.016