Assessing greenhouse gas emissions from electric vehicle operation in Australia using temporal vehicle charging and electricity emission characteristics

ABSTRACT

Significant interest exists in the potential for electric vehicles (EVs) to be a source of greenhouse gas (GHG) abatement. In order to establish the extent to which EVs will deliver abatement, however, a realistic understanding of the electricity and transport sector GHG emissions impacts arising from different approaches to integrating EVs into the power system is required. A key issue in this regard is the extent to which GHG emissions are a function of where and when EV charging will be enabled (or disabled) by the provision of recharging infrastructure and implementation of charging management strategies by the electricity industry. This article presents an investigation of the GHG emissions arising from electricity and gasoline consumption by plug-in hybrid EVs under a range of standard EV-power system integration scenarios. An assessment framework is presented, and GHG emissions from EV use are assessed for the New South Wales (NSW) and South Australian (SA) pools of the Australian National Electricity Market (NEM) using retrospective electricity system generation data for 2011. Results highlight that there is a range of possible outcomes depending on the integration scenario and emissions accounting approach used. This range illustrates value of a temporally explicit assessment approach in capturing the temporal alignment of electricity sector emission intensity and EV charging. Results also show the importance of a clean electricity generation mix in order for EVs to provide a GHG abatement benefit beyond what would be achieved by a hybrid (but non-plug-in) vehicle. The extent to which overnight charging in NSW is observed to produce higher emissions relative to unmanaged charging also illustrates a possible trade-off between GHG emissions and benefits for electricity industry from EV charging at times of low demand.     

Optimal surveillance against foot‐and‐mouth disease: the case of bulk milk testing in Australia

Previous foot‐and‐mouth disease (FMD) outbreaks and simulation‐based analyses suggest substantial payoffs from detecting an incursion early. However, no economic measures for early detection have been analysed in an optimising framework. We investigate the use of bulk milk testing (BMT) for active surveillance against an FMD incursion in Australia. We find that BMT can be justified, but only when the FMD entry probability is sufficiently high or the cost of BMT is low. However, BMT is well suited for post‐outbreak surveillance, to shorten the length of time and size of an epidemic and to facilitate an earlier return to market.     

Absorptive Capacity, Coauthoring Behavior, and the Organization of Research in Drug Discovery

We examine the interface between for-profit and publicly funded research in pharmaceuticals. Firms access upstream basic research through investments in absorptive capacity in the form of in-house basic research and 'pro-publication' internal incentives. Some firms also maintain extensive connections to the wider scientific community, which we measure using data on coauthorship of scientific papers between pharmaceutical company scientists and publicly funded researchers. 'Connectedness' is significantly correlated with firms' internal organization, as well as their performance in drug discovery. The estimated impact of 'connectedness' on private research productivity implies a substantial return to public investments in basic research.     

The global credit boom: Challenges for macroeconomics and policy

The recent financial crisis has put the spotlight on the rapid rise in credit which preceded it. In this paper, we provide an empirical and theoretical analysis of the credit boom and the macroeconomic context in which it developed. We find that the boom was unusually long and associated with neither particularly strong growth nor rising inflation in the economies in which it took place. We show that this type of credit and financial cycle is hard to reconcile with existing economic theory and argue that, while the “global savings glut” may account for the cycle's initial phase, other factors – such as the conduct of monetary policy and perceptions of declining macroeconomic risk – were more important from the mid-2000s onwards. We conclude by identifying some of the challenges now facing macroeconomics and policy.     

Creating positive habits in water conservation: the case of the Queensland Water Commission and the Target 140 campaign

This case study reports the activities of the Queensland Water Commission (QWC) in securing the water supply for Brisbane and surrounding South East Queensland (SEQ) in response to the worst drought on record. The case focuses on residential water use and examines a three year period from 2006 to 2009. The focus of the study is the interventions of 2007, which centres on the Target 140 campaign. In 2007, the QWC faced with critically low dam levels identified household consumption as responsible for 70% of water use. The eight month Target 140 campaign targeted household users, aiming to change the water use habits of SEQ residents. The campaign achieved not only immediate reductions in water use but also contributed to long term behavioural and attitudinal change. The aim of the campaign was to reduce water consumption from 180 litres (l) /person/day to a target of 140 l /person/day by the end of 2007. This was achieved with water consumption dropping to an average of 129 l/person/day during the campaign and saving over 20 billon litres of water. In 2009, despite the drought broken for over a year and the water consumption target lifted to 200 l /person/day residents were continuing to consume water, on average, less than 140 l /person/day. The outcome was a capstone result for the QWC, and the Target 140 campaign went on to achieve international industry recognition. This case study demonstrates how attitudinal change, goal setting and feedback were key components of the change strategy and outlines the tactics used during the campaign. Furthermore, the case study discusses these mechanisms for change in terms of a theoretical understanding. Copyright © 2011 John Wiley & Sons, Ltd.     

The economics of household waste management: a review

In recent years reducing the amount of waste generated by households has become an important policy issue in industrialised economies. It is no longer acceptable to discard waste without concern for environmental and natural resource issues. In an effort to reduce household waste various policy instruments such as kerbside charges, deposit-refund schemes, integrated sales tax exemptions and virgin material taxes, have been proposed and/or implemented. This article reviews the economics literature that has addressed household waste management. It is argued that a comprehensive modelling framework is necessary if the complex policy environment is to be accurately described.     

Targeting Monitoring Resources to Enhance the Effectiveness of the CAP

From its inception the operation of the CAP has required the compliance monitoring of farming activities and anticipated increases in the complexity of the monitoring tasks with the introduction of the SFP will stretch monitoring resources even further. We outline the scope for using targeting to enhance effectiveness of monitoring resources in dealing with non-compliant behaviour. Targeting resources can increase information on particular groups making identification of inappropriate behaviour easier. However, in reallocating monitoring resources towards the targeted sub-group, there is likely to be an associated reduction in resources allocated to monitoring non-targeted agents and therefore an increase in their incentive to cheat. To reduce this problem we suggest balancing the targeting-induced reduction in the probability of being caught cheating for non-targeted agents with an appropriate increase in the penalty for those agents if they are caught cheating. This increase in penalty results in an increased divergence between the outcomes from being caught or not caught cheating for non-targeted agents, which increases the overall perceived risk of the cheating option. And for risk-averse agents, this increase is a disincentive to cheating. On this basis we argue for greater use of target-based compliance monitoring as part of the revised and evolving CAP.     

Natural resource accounting in theory and practice: A critical assessment

In this paper an extensive review of the theoretical and applied literature on natural resource accounting (NRA) is provided. The review begins by explaining the economic theory that underpins NRA, contrasting welfare and sustainability as policy goals, and presenting various distinct conceptions of national income. The state of play regarding official revisions to the system of national accounts (SNA) with respect to natural resources and the environment is presented and controversial areas are highlighted. Finally, the economic literature on proposed revisions, and applied studies that have proceeded using these methods, is summarised and critiqued. We argue that much of the literature proceeds with weak conceptual foundations, and that typical case studies produce results that are ambiguous in interpretation. Moreover, we highlight fundamental tensions between economic theory and national accounting methodology, and conclude that one outcome of this has been the insufficient attention paid by economists to the revisions to the SNA; instead devoting time and effort to 'freelance' NRA case studies utilising sometimes ad hoc methods from the economic literature.