Gareth P. Occhiuzzo

Bio: Gareth P. Occhiuzzo is an academic researcher from California Energy Commission. The author has contributed to research in topics: Alcohol fuel & Alternative fuel vehicle. The author has an hindex of 2, co-authored 2 publications receiving 361 citations.

Demand for clean-fuel vehicles in california: a discrete-choice stated preference pilot project

Abstract: A study was conducted to determine how demand for clean-fuel vehicles and their fuel is likely to vary as a function of attributes that distinguish these vehicles from conventional gasoline vehicles. For the purposes of the study, clean-fuel vehicles are defined to encompass both electric vehicles and unspecified (methanol, ethanol, compressed natural gas or propane) liquid and gaseous fuel vehicles, in both dedicated or multiple-fuel versions. The attributes include vehicle purchase price, fuel operating cost, vehicle range between refueling, availability of fuel, dedicated versus multiple-fuel capability and the level of reduction in emissions (compared to current vehicles). In a mail-back stated preference survey, approximately 700 respondents in the California South Coast Air Basin gave their choices among sets of hypothetical future vehicles, as well as their choices between alternative fuel versus gasoline for hypothetical multiple-fuel vehicles. Estimates of attribute importance and segment differences are made using discrete-choice nested multinomial logit models for vehicle choice and binomial logit models for fuel choice. These estimates can be used to modify present vehicle-type choice and utilization models to accomodate clean-fuel vehicles; they can also be used to evaluate scenarios for alternative clean-fuel vehicle and fuel supply configurations. Results indicate that range between refueling is an important attribute, particularly if range for an alternative fuel is substantially less than that for gasoline. For fuel choice, the most important attributes are range and fuel cost, but the predicted probability of choosing alternative fuel is also affected by emissions levels, which can compensate for differences in fuel prices.

Mainstream consumers driving plug-in battery-electric and plug-in hybrid electric cars: A qualitative analysis of responses and evaluations

Abstract: Plug-in electric vehicles can potentially emit substantially lower CO2 emissions than internal combustion engine vehicles, and so have the potential to reduce transport emissions without curtailing personal car use. Assessing the potential uptake of these new categories of vehicles requires an understanding of likely consumer responses. Previous in-depth explorations of appraisals and evaluations of electric vehicles have tended to focus on ‘early adopters’, who may not represent mainstream consumers. This paper reports a qualitative analysis of responses to electric cars, based on semi-structured interviews conducted with 40 UK non-commercial drivers (20 males, 20 females; age 24–70 years) at the end of a seven-day period of using a battery electric car (20 participants) or a plug-in hybrid car (20 participants). Six core categories of response were identified: (1) cost minimisation; (2) vehicle confidence; (3) vehicle adaptation demands; (4) environmental beliefs; (5) impression management; and, underpinning all other categories, (6) the perception of electric cars generally as ‘work in progress’ products. Results highlight potential barriers to the uptake of current-generation (2010) plug-in electric cars by mainstream consumers. These include the prioritization of personal mobility needs over environmental benefits, concerns over the social desirability of electric vehicle use, and the expectation that rapid technological and infrastructural developments will make current models obsolete. Implications for the potential uptake of future electric vehicles are discussed.

Experimental analysis of choice

Abstract: Experimental choice analysis continues to attract academic and applied attention. We review what is known about the design, conduct, analysis, and use of data from choice experiments, and indicate gaps in current knowledge that should be addressed in future research. Design strategies consistent with probabilistic models of choice process and the parallels between choice experiments and real markets are considered. Additionally, we address the issues of reliability and validity. Progress has been made in accounting for differences in reliability, but more research is needed to determine which experiments and response procedures will consistently produce more reliable data for various problems.

Consumer Preferences for Alternative Fuel Vehicles: A Discrete Choice Analysis

Abstract: In this paper we analyze the potential demand for privately used alternative fuel vehicles (AFVs), based on a nationwide survey in Germany among (potential) car buyers. For this purpose, we applied a stated preference discrete choice experiment, using a wide range of vehicle alternatives (gasoline/diesel, natural gas, hybrid, plug-in hybrid, electric, biofuel, hydrogen) and vehicle attributes. By applying both a multinomial logit model and a mixed (error components) logit model, we estimate the attributes’ influence on vehicle choice and calculate consumers’ willingness-to-pay for the improvement of these attributes. Furthermore, in a scenario analysis, we simulate the impact of monetary and non-monetary policy measures on vehicle choice probabilities. We find that the most promising target group for the adoption of all kinds of AFVs is that of younger, well-educated, and environmentally aware car buyers, who, in the case of electric vehicles, also have the possibility to plug-in their car at home, and who have a high share of city trips and thus need a small car. Moreover, we find that, depending on the vehicle alternative, environmental awareness, and budget constraints for the next vehicle purchase, households are willing to pay substantial amounts for the improvement of fuel cost, driving range, charging infrastructure, CO2 emissions, vehicle tax exemptions, and free parking or bus lane access. Furthermore, the scenario results suggest that conventional vehicles will maintain their dominance in the market, whereas electric and hydrogen vehicles will remain unpopular. The market share of the latter is only expected to rise markedly if massive and multiple policy interventions are implemented. Finally, we find evidence that an increase in the fully electric vehicle’s driving range to a level comparable with all other vehicle alternatives has the same impact on its choice probability as would a market-based, multiple measures policy intervention package.

The Role of Instrumental, Hedonic and Ssymbolic Attributes in the Intention to Adopt Electric Vehicles

Abstract: The aim is to understand how private car drivers’ perception of vehicle attributes may affect their intention to adopt electric vehicles (EVs). Data are obtained from a national online survey of potential EV adopters in the UK. The results indicate that instrumental attributes are important largely because they are associated with other attributes derived from owning and using EVs, including pleasure of driving (hedonic attributes) and identity derived from owning and using EVs (symbolic attributes). People who believe that a proenvironmental self-identity fits with their self-image are more likely to have positive perceptions of EV attributes. Perceptions of EV attributes are only very weakly associated with car-authority identity.