Water energy nexus in city and hinterlands: Multi-regional physical input-output analysis for Hong Kong and South China

Chen, Pi Cheng; Alvarado, Valeria; Hsu, Shu-Chien

doi:10.1016/j.apenergy.2018.05.083

Cited by 81 publications

(35 citation statements)

References 27 publications

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“…Others again explicitly include a fourth sector-namely climate-to the nexus [11,45,49,50]. Depending on specific perspectives, several publications address merely bilateral relationships among any two of the nexus sectors-most notably, the water-energy relationship, e.g., [1,11,[51][52][53][54][55][56][57][58][59][60][61][62][63][64]. In this paper, the WEL Nexus perspective was chosen, since it reflects a holistic approach, including all three sectors and a focus on natural resources instead of exclusively human needs (i.e., food), while subsuming overarching climate aspects under the three sectors, respectively (e.g., emissions originating from agricultural practices or power generation).…”

Section: Wel Nexus Conceptmentioning

confidence: 99%

Linking Environmental Policy Integration and the Water-Energy-Land-(Food-)Nexus: A Review of the European Union’s Energy, Water, and Agricultural Policies

et al. 2019

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Against the backdrop of climate and environmental pressures, as well as limited resource availability and trade conflicts, devising policies for energy and the use of natural resources in general becomes exceedingly complex. Moreover, policies are required to account for interrelations between individual resources and between different sectors and policy fields, but implementation often lacks. To evaluate the current state of integrated policy design in the EU, a review of European energy, water, and agricultural policies was conducted. Using a qualitative comparative research approach, the objective was to identify and explain the differing degrees and variations in policy integration among them. To this aim, the concepts “Environmental Policy Integration” and “Water-Energy-Land Nexus” were jointly applied as analytical frameworks. The analysis revealed that currently, different authorities are endowed with largely sectoral mandates. Accordingly, the respective sectoral policy sets are historically grown based on differing sets of formal and informal rules and processes, thus making policy integration among the sectors, let alone within the nexus, a highly challenging task.

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Section: Wel Nexus Conceptmentioning

confidence: 99%

Linking Environmental Policy Integration and the Water-Energy-Land-(Food-)Nexus: A Review of the European Union’s Energy, Water, and Agricultural Policies

et al. 2019

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“…Moreover, nowadays attitude to water energy production is changing; it aims at minimising influence on environment, even at cost of income. Small hydro plants cause water retention in environment (Blok and Tomaszewska 2015;RESTOR HYDRO 2015;Chen et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Hydro energy in Poland: the history, current state, potential, SWOT analysis, environmental aspects

Igliński

2019

Int J Energ Water Res

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The history of hydro energy in Poland was shown in the article. The first mills were built in the ninth century and the first hydro energy plant was opened in 1896. In 1935, there were 8000 water energy plants and dozen other installations using water energy. War action and nationalisation have caused the crash of hydro energy in Poland. At the moment, there are 761 water energy plants amounting to 994 MW. The Lower Vistula Cascade was described but also use of water for energy purposes in heat plants and waste treatment plants. Technical potential of hydro energy is major. Using already exciting heaps (there are 16,005), it is possible to obtain 14.27 PJ. SWOT analysis has shown that hydro energy in Poland is a wellmastered technology and allows small water retention. Investing in hydro energy in Poland requires a lot of documents. In addition, energetic law is constantly changing. Influence of hydro energy on environment was presented. It was concluded that small hydro energy development is definitely advised in Poland. Small hydro energy stations allow to produce energy and allow small retention in steppe Poland.

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“…The energy-water nexus is becoming the focus in recent years as it becomes more recognized that sectoral economic interactions play an important role and magnify their interdependency in terms of resource use. Some studies have explored the direct and indirect interdependencies between energy and water in socioeconomic systems [37][38][39][40][41][42][43][44][45][46][47][48][49]. By tracking sectoral economic flows through a supply chain, IOA can investigate these interdependencies, which are a common focus in nexus studies [36].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, there are "structural tensions" between the water and energy sectors, where stresses and insecurities in one sector simultaneously become stresses for the other, and may lead to questionable tradeoffs between the security of water and energy resources [38][39][40][47][48][49][50]. [46,51].…”

Section: Introductionmentioning

confidence: 99%

Energy–water nexus under energy mix scenarios using input–output and ecological network analyses

2019

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Increasing demand for energy, an evolving electricity-generation mix, and water demand from competing sectors have important implications for water budgets and energy planning. To evaluate the water-related impacts of energy-related decisions, we built a national energywater nexus scenario analysis assessment framework by extending input-output analysis (IOA) to future scenarios of China's energy generation mix. The scenarios for China out to 2050 include four low-carbon-development scenarios that are planned in climate change mitigation roadmaps and one baseline scenario. Sectoral direct energy, direct water, water-related energy, and energy-related water consumption were inventoried. Sectoral embodied consumption of water and energy and their inter-sector flows were mapped using IOA to create energy-water nexus networks. A sectoral nexus was defined to investigate the impact of the energy-water linkage on energy and water systems. Sectoral control and dependence relationships were revealed by ecological network analysis. Results showed that nexus impact on the water system was larger than that on the energy system. The main export and import pairs-Chemical industry-Agriculture (Ag), Manufacturing-Ag, Ag-Metal smelting and pressing (Me), and Me-Electricity (El)-should be critical pathways for nexus management via the adjustment of sectoral economic relationships. The sectors with a high nexus impact-Ag, El, and Meshould decrease their energy and water consumption to achieve outsized system-wide savings. Sectors with a low nexus impact-such as domestic services; transport, storage and post services; and water production and supply-can increase their energy and water consumption with a lesser impact on the wider system. The low-carbon-development scenario exhibited the lowest nexus impact, followed by the enhanced low-carbon scenario, whose energy mix also exerted the lowest pressure on the water system. By analyzing the tradeoffs between energy, water, and carbon emissions under five scenarios, this study provides insights for nexus management on how to balance water shortage issues and the development of energy generation in future energy and water resource planning.

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Water energy nexus in city and hinterlands: Multi-regional physical input-output analysis for Hong Kong and South China

Cited by 81 publications

References 27 publications

Linking Environmental Policy Integration and the Water-Energy-Land-(Food-)Nexus: A Review of the European Union’s Energy, Water, and Agricultural Policies

Linking Environmental Policy Integration and the Water-Energy-Land-(Food-)Nexus: A Review of the European Union’s Energy, Water, and Agricultural Policies

Hydro energy in Poland: the history, current state, potential, SWOT analysis, environmental aspects

Energy–water nexus under energy mix scenarios using input–output and ecological network analyses

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