As a prelude to scaled-up deployment of electric vehicles, this paper examines the economic feasibility of replacing the current fleet of fossil fuel taxis in Seoul with electric vehicle (EV) taxis by phasing the former out based on their opertional lifetime. In the cost-benefit analysis for such a transition, costs of purchasing vehicles and constructing and maintaining charging infrastructure are estimated based on the market prices and characteristics of taxi transport in Seoul. On the benefit side, the avoided environmental costs due to reduced air pollutants and greenhouse gas emissions are calculated. The transport planning model, especially traffic assignment, is incorporated in the calculation process for a better estimation of the avoided costs through more accurate link flows and speeds on the road network. Savings from the fuel switch to electricity from liquefied petroleum gas for taxis are also estimated. The resultant benefit-cost ratio signifies economic viability of the deployment of EV taxis. The results of the study are encouraging and could be a good piece of rationale to push forward with electric vehicles.
Extreme weather events in China, expected to become increasingly common because of climate change, pose a grave threat to essential infrastructure that provides running water, electricity, road and railway connections. This research looks at the fundamental issues of understanding the vulnerability and risks to Chinese infrastructures due to adverse climate impacts. The authors have developed a suite of infrastructure (energy, transport, water, waste and ICT) models to understand how exposed China's infrastructure is to various potential climate change impacts. A concept called the “infrastructure criticality hotspot” is used which is defined as a geographical location where there is a concentration of critical infrastructure, measured according to the number of customers directly or indirectly dependent upon it. Key findings from this research show that China’s top infrastructure vulnerability hotspots are Beijing, Tianjin, Jiangsu, Shanghai and Zhejiang. Using spatial hydrological models, the authors then investigate how these areas may be affected by flooding.
The UK electricity system is undergoing a significant transformation. Increasing penetration of renewable generation and integration of distributed energy resources (DERs) such as electrical storage, solar PV and wind generators challenge the traditional way of balancing electricity in the grid, whereby supply matches demand.
This paper estimates the welfare impact of rural electrification in India using nationally representative household panel survey data for 2005 and 2012. Analysis based on a propensity-score-weighted fixed effects model finds that while electrification is associated with a broad range of social and economic benefits, the size of the effects depends importantly on the reliability of electricity service. Gaining access to electricity combined with a reliable power supply is associated with a 17 percent increase in income during the sample period, but gaining access to electricity alone is associated with only a 9.6 percent increase in income. The net gain from both increasing the access rate and reducing power outages in rural India is estimated to be US$11 billion a year. Moreover, India’s rural electrification policy appears to be progressive because lower-income households benefit more from access to electricity than higher-income households during the sample period.
This report presents the anonymised analysis of the 79 investors who participated on a voluntary basis and cover a representative sample of around two thirds of the listed equity and corporate bonds held by Swiss pension funds and insurances.
The 2017 Global Review of Sustainable Public Procurement provides an up-to-date overview of the scale and type of sustainable procurement activities undertaken worldwide in the past three years. It addresses a longstanding need of stakeholders to access reliable and comprehensive information on activities and organizations involved in this critical organizational function.