Interconnectivity between energy and water supply systems

"Water and energy are basic resources for humanity. As the processes of providing these resources have a major contribution to intensifying climate change, there has been a growing interest in finding ways to balance the demand and consumption of these resources, strengthening the resilience of these systems to socio-economic and environmental disturbances. This paper analyses the characteristics of interconnectivity between two systems – energy supply system and water supply system. The connections between demand and consumption of water and energy in these interrelated supply systems are highlighted at the level of EU and world regions. The concept of Water-Energy Nexus is introduced and different models and indicators are described. The specific energy indicators on “energy for water” are analyzed for the case of urban water supply systems and ways for energy efficiency increasing are established."