The large batteries in electric cars can contribute to the energy transition and help make the power grid fit for the future. This is based on various technologies summarized under Smart Charging. With so-called grid-friendly and bidirectional charging, fluctuations in electricity demand are to be balanced, and the grid is stabilized. UScale asked 1,830 e-car owners for their opinion on smart charging. The market researchers show the acceptance of the ten most important use cases, how customers can be motivated to participate, and how the car, charging infrastructure, and house can best be integrated into one unit. Therefore, the respondents are open to grid-friendly charging: A good 30 percent would instead start today than tomorrow and, above all, benefit from the cost advantages. Smart charging only becomes really interesting when bidirectional charging comes along and the e-car can be connected to your own photovoltaic system. On the downside, there are high investment costs, unclear technical reliability, and many other concerns that vendors need to address. Car manufacturers must also make it clear how smart charging will affect battery life in the long term. Two special grid-supportive and bidirectional charging cases were queried in the study: With Vehicle-To-Load (V2L), the car battery can be used as a power supply for various applications. Around 50 percent of those surveyed see this as attractive equipment for multiple applications. Variable tariffs are a particular instrument of grid-friendly charging. The electricity demand can be influenced by the price control of the energy suppliers. For example, the demand should be increased when a lot of green electricity is available on sunny or windy days. Despite possible cost advantages, those surveyed reacted somewhat cautiously. According to UScale, the main reason is that electricity tariffs will become even less transparent. Not all e-car drivers want to use smart charging to contribute to the energy transition or relieve the power grid. However, the study shows that incentives related to charging versus payback points and other credits can help here.
According to the study, there are still no providers of smart charging that the respondents trust to have the technical know-how, the trust in the secure handling of sensitive data, and the competence to make everything easy to use. As a result, vehicle manufacturers, energy suppliers, building technology, and charging technology providers still have a lot of work.
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