An Integrated Energy and Water Market for the Supply Side of the Energy-Water Nexus in the Engineered Infrastructure

Abstract

In regions that utilize thermal desalination as part of their water supply portfolio, the cogeneration of water and power in cogeneration desalination plants couples the supply sides of the electricity and water grids. For a fixed plant design, there is a limited range of ratios of generated electric power to produced water at any given time. Due to this coupling, electricity and water require co-optimization. In an environment in which electricity supply is determined by deregulated wholesale markets, this need for co-optimization suggests a need for integrated electricity and water markets. In this market, independent power producers, independent water producers and independent cogeneration plants would submit bids to satisfy demand over a time horizon to a clearing mechanism, indicating relevant physical constraints. The mechanism would then optimize supply of both electricity and water over the time horizon of interest. Recently, a simultaneous co-optimization method has been contributed for the economic dispatch of networks that include water, power and cogeneration facilities in such an integrated market. This paper builds upon this foundation with the introduction of the corresponding unit commitment problem.

A Reference Architecture for the American Multi-Modal Energy System

“…By changing the ratios of instantiated technologies, different scenarios can be analyzed and outcomes compared. For example, the energy-water nexus mathematical models were later used to conduct sensitivity analyses and identify input/output trade-offs [73]- [76], [84]. The AMES reference architecture can also potentially import much of the openly available socio-economic NEMS data.…”

Opportunities for energy-water nexus management in the Middle East & North Africa

“…Finally, one author directly addresses the economic dispatch of a single specific facility composed of a number of sub-units but neither generalizes the formulation nor applies it to all the water and production units in the water and power grids (El-Nashar and Sarfraz Khan, 1991). Recent work (Santhosh et al, 2012(Santhosh et al, , 2013a(Santhosh et al, , 2013b(Santhosh et al, , 2013c(Santhosh et al, , 2014Lubega et al, 2014), however, has developed parametrized models for the optimization of multiple co-generation plants in conjunction with pure power and water plants with no assumptions of cost splitting. Such models treat all three plant-types equally.…”

“…Recent work (Farid and Lubega, 2013;Lubega and Farid, 2013a, 2014a, 2014bLubega et al, 2014) has developed and applied a transparent physics-based model that interfaces a model of the electricity system to models of the municipal water and wastewater systems enabling an input-output analysis of these three systems in unison (Figure 3). This model arose from an awareness that the energy-water nexus has developed to be a major sustainable development challenge in part because the engineering of an industrial facility gives limited attention to the other industrial facilities upon which it depends.…”