Similar to conflicting interests that may stem from harmful subsidies in water-related sectors, high tariffs can have a stagnating effect. For instance, tariffs charged to water-operating systems are usually higher than those charged to the industry. The optimal use of electricity tariffs by utilities depends greatly on the conversion and use of new, more energy efficient technologies. Currently, some large enterprises benefit from privileged access to aquifers, and they can obtain rights to drill wells or to exploit water surfaces without control.