Tom Rushby

The use of electric vehicles (EVs) provides a pathway to sustainable transport, reducing emissions and contributing to net-zero carbon aspirations. However, consumer acceptance has been limited by travel range anxiety and a lack of knowledge about EV technology and its infrastructure. This is especially the case in hot and oil-rich areas such as Kuwait, where transport is predominantly fossil fuel-driven. Studying the effects of high ambient temperature on EV efficiency and range is essential to improve EV performance, increase the user base and promote early adoption to secure more environmental benefits. The ability to determine the energy consumption of electric vehicles (EVs) is not only vital to reduce travel range anxiety but also forms an important foundation for the spatial siting, operation and management of EV charging points in cities and towns. This research presents an analysis of data gathered from more than 3000 journeys of an EV in Kuwait representing typical vehicle usage. The average energy intensity and consumption of the car/kilometre travelled were calculated for each journey, along with ambient temperature measured by the vehicle. The analysis indicates that energy intensity reaches a minimum at a starting temperature between 22 °C and 23 °C. Energy intensity rises with decreasing temperature below this point and with increasing temperature above this point. The results show that many vehicle journeys started with high temperatures, with about half of journeys starting at 30 °C or above and approximately a quarter at 40 °C or above. Fitting a model to the empirical data for trip starting temperature and energy intensity, average efficiency is impacted at high car temperatures, with energy intensity modelled at 30 °C and 40 °C to be higher by 6% and 22%, respectively. These findings have implications for vehicle range, EV charging infrastructure and car storage and parking provision.

In a UK context, encouraging the uptake of energy efficiency measures at the household level is an ongoing challenge of ever-increasing importance. A combination of economic and psychological factors influence green investment decisions and so this study aims to determine whether online focus groups are a viable means of interacting and evaluating the effectiveness of personality tailored marketing strategies. Here, we present the learnings from over 70 synchronous online focus groups undertaken with a UK energy provider’s household customers (N = 143) to test the effectiveness of two energy product propositions (smart thermostat and hybrid heat pump) through two channels of communication: video and discussion. The researchers examined and analysed the online engagement and focus group method, focusing on the customer feedback, appropriateness of the approach and how it works in practice, providing key learnings for further research. The approach allowed for greater interaction with a geographically and demographically diverse pool of participants, many of whom are time poor and would ordinarily be unwilling or unable to participate. In this article, we report the differences between implementing online focus groups and face-to-face focus groups and examine the difficulties and uncertainties, in particular relating to entry to sessions and drop-out rates. Online focus groups were found to be a viable, flexible and convenient method for engaging with an energy company’s current customer base in the comfort of their own home.