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Integrating electric vehicles (EVs) into the electric power system poses significant challenges to grid operation and planning due to the potential constraints on the power system. To minimize grid congestion, the best option is to increase the production of photovoltaic (PV) energy for domestic use and EV charging stations. This paper addresses the nexus of technical, financial, and environmental effects of customer involvement in economic development and load management. In this paper, a new model design of solar-powered EV charging stations is proposed and implemented in HOMER Grid, and a case study has explored how economic, technical, and energy management benefits can be achieved through customer energy involvement and the integration of PV-based charging stations. The proposed PV-based charging stations contribute toward the energy management of the region, and the study observes the real-time optimal charging and discharging strategy of PV-based grid-connected charging stations. The case study results show that the investigated area can produce 1,070,804.096 MWh/year of energy through maximum customer involvement, consequently reducing overall energy costs. Moreover, the study demonstrates that the selected region can produce 86,961,688 kWh/year through the PV system, achieving 363,899 charging sessions per year, offering maximum advantages and facilitation for EV charging. The proposed model applicability shows that large-scale customer involvement can bring significant techno-economic benefits and attract regional investments. • This paper proposes a new design of a grid-tied renewable energy system. • It investigates the energy economics and environmental effects for a practical location. • The research examines energy management including PV systems and electric vehicles. • The results of proposed model are compared with other models. [ABSTRACT FROM AUTHOR]

Abstract Resident satisfaction with governmental environmental protection is of great significance to environmental governance by the Chinese government. However, the impact of internet use on resident satisfaction with governmental environmental protection is complex, and the relevant empirical evidence is far from sufficient. Based on data from the Chinese Social Survey for 2013 and using OLS and ordered probit regressions, this study finds a significant negative relationship between internet use and resident satisfaction with governmental environmental protection. Further study suggests that an increase in different online content frequencies could reduce resident satisfaction with governmental environmental protection. Nevertheless, residents who are conservative or skeptical about internet information are more satisfied with the government's environmental protection. The conclusions of this study are consistent with the "negativity bias" theory, indicating that netizens focus greater attention on negative news related to environmental protection. Finally, this paper performs two analyses to ensure the robustness of the research results. First, considering the possible "self-selection" problem, this paper conducts a robustness test using the method of propensity score matching (PSM) and finds that the results are still consistent. Second, the sample is subdivided to analyse the regional differences in the impacts of internet use on resident satisfaction with governmental environmental protection. The results show that internet use has a significant negative influence on resident satisfaction with governmental environmental protection in eastern China, central China but has no significant effect in western China. In addition, the impact of internet use on urban resident satisfaction with governmental environmental protection is significantly greater than that of rural resident. Highlights • The effect of internet use on resident satisfaction with the governmental environmental protection is studied for China. • Internet use has significant negative impact on resident satisfaction with governmental environmental protection in China. • Residents who are skeptical about internet information are more satisfied with the governmental environmental protection. • Conclusions are consistent with "negativity bias theory", indicating that netizens pay more attention to negative news. [ABSTRACT FROM AUTHOR]

Green loan has attracted worldwide attention in recent years due to the increasingly striking environmental problems caused by economic activities. This paper considers a game on the application of green loans for technique innovation among the enterprises, banks and government, and addresses the effectiveness of green loan and government subsidy on promoting clean production. Serial profit-risk models are established and then solved according to the intention of enterprises to technique innovation for promoting clean production. Energy emission is selected as a measure capturing the production effects on environment in this paper. The conditions that enterprises execute technique innovation with loans and that banks approve loans for enterprises are derived. Two threshold values on technique maturity are presented to support these conditions. The most importantly, it is rigorously proved that green loan subsidy provided by the government could improve environmental quality through reducing the energy emissions from enterprises. It is also shown that subsidy not only improves the intention of enterprises to technique innovation, but also increases the innovation risks. [ABSTRACT FROM AUTHOR]

Abstract The trilemma of economic growth, energy sustainability and environmental protection is facing China's urban sustainable development. In this paper, the ecological network analysis is applied to evaluate the whole metabolic processes of urban energy system. Then, a hierarchy analysis is conducted to diagnose and describe the energy's impacts on the whole energy metabolic processes, and reflect the dynamics and evolution of urban energy metabolic system. Using Beijing as a case study, results suggest that Beijing's strongest energy metabolic flows are electricity→service and electricity→ industrial energy use. Meanwhile, the main inflow to electricity has switched from raw coal in 2008 to natural gas in 2016. The hierarchy analysis indicates that the impacts of Natural gas and other energy are increasing while that of raw coal is decreasing. These results also suggest that Beijing's current achievements on urban energy system optimization mainly rely on structural variation in industries. It is considered that the future optimization should concentrate on promoting clean energy utilization in Beijing. [ABSTRACT FROM AUTHOR]

Nuclear power has gradually become one of the key parts in power supply structure due to its environmental benefits, effective productivity and steady operation. However, complicated system, high investment and derivative security issues make it difficult to develop in a large scale. Nowadays, faced with serious challenges from environment protection, fossil fuel lacking and upgrading of industrial structure, China are taking measures to promote nuclear power industry to realize sustainable development. China׳s nuclear power industry has achieved large achievements in industrial policy, technical and economic condition during the last three decades. However, there still exist problems impeding its future development. Therefore, this paper first analyzes the external environment and historical stages of nuclear power industry in China. Then, it summarizes its current situation and points out the existing problems. In the end, to deal with the above problems, this paper proposes relative solutions from the aspects of industrial distribution optimization, regional resources integration, technical standard system, industrial organization mode and so on. [ABSTRACT FROM AUTHOR]

High levels of observed city involvement in energy and climate initiatives indicate that free-riding has been much less of a barrier to local climate protection efforts than suggested by theories of collective action. This study investigates why local governments have adopted various energy and climate change policy instruments despite the non-excludability of climate benefits. This paper advances theories of institutional collective action (ICA) and policy diffusion by testing ICA based hypotheses that local officials are able to overcome collective action problems to the extent that the costs of these initiatives are minimized through policy network interactions, the extent to which climate action produces localized benefits or compliments local environmental, development or growth management efforts, and the extent to which energy and climate protection efforts generate selective benefits to elected and appointed local government officials who advance their career interests depending on the existing configurations of political system institutions. Analysis of adoptions of the Climate Protection Agreements by Florida Cities indicates larger cities are more likely to adopt climate agreement, while district elections decrease the likelihood of climate policy adoption. Moreover, economic development rather than growth management or environmental problem situation is linked to climate initiatives. [ABSTRACT FROM AUTHOR]

With the rising demand for renewable energy and environmental protection, anaerobic digestion of biogas technology has attracted considerable attention within the scientific community. This paper presents a comprehensive review of research achievements on anaerobic digestion developments for biogas production. The review includes a discussion of factors affecting efficiency (temperature, pH, C/N ratio, OLR and retention time), accelerants (greenery biomass, biological pure culture and inorganic additives), reactors (conventional anaerobic reactors, sludge retention reactors and anaerobic membrane reactors) and biogas AD processes (lignocellulose waste, municipal solid waste, food waste, livestock manure and waste activated sludge) based on substrate characteristics and discusses the application of each forementioned aspect. The factors affecting efficiency are crucial to anaerobic digestion, because they play a major role in biogas production and determine the metabolic conditions for microorganism growth. As an additive, an accelerant is not only regarded as a nutrient resource, but can also improve biodegradability. The focus of reactor design is the sufficient utilization of a substrate by changing the feeding method and enhancing the attachment to biomass. The optimal digestion process balances the optimal digest conditions with the cost-optimal input/output ratio. Additionally, establishment of theoretical and technological studies should emphasize practicality based on laboratory-scale experiments because further development of biogas plants would allow for a transition from household to medium- and large-scale projects; therefore, improving stability and efficiency are recommended for advancing AD research. [ABSTRACT FROM AUTHOR]

Fast depleting fossil fuels and the growing awareness for environmental protection have led us to the energy crisis. Hence, efforts are being made by researchers to investigate new ways to extract energy from renewable sources. ‘Microgrids’ with Distributed Generators (DG) are being implemented with renewable energy systems. Optimization methods justify the cost of investment of a microgrid by enabling economic and reliable utilization of the resources. This paper strives to bring to light the concept of Hybrid Renewable Energy Systems (HRES) and state of art application of optimization tools and techniques to microgrids, integrating renewable energies. With an extensive literature survey on HRES, a framework of diverse objectives has been outlined for which optimization approaches were applied to empower the microgrid. A review of modelling and applications of renewable energy generation and storage sources is also presented. [ABSTRACT FROM AUTHOR]