Design challenge

Energy saving will be a new living style in the future. However, planning energy consumption is difficult as it is difficult to see and measure. We translate energy use into expenditure which people can understand precisely. Meanwhile, we build a way for people to interact with energy and make future plans.



September, 2017 - November, 2017

Team project

Interaction design





We generated ideas and concepts through sketching and prototyping possible interactions. Scaling was adopted in interaction design as it was intuitive to users. As house energy consumption contained electricity, water and heat, we decided to use tokens to distinguish different energy types. Calendar was designed to help users read energy expenditure more detailedly.


The scaler


The product evaluates the energy consumption and maps it with money expenditure. With the product, users could learn whether the actual expense is over or under the planned expense. The can also view cost in detail (time and energy) and make new planning.


The calendar


Users could use the calendar to make schedules. On the top there is a digital pen that users could use to write details of an appointment. The switch on the top left is able to adjust the range of time (year, month, day, hour). The small projector on the left can project the timetable on the desk. To interact with the digital timetable, users could use the small controller.


connected system


Once the scaler and the calendar are connected, users can see the expenditure with convenient interaction. They can see yearly and monthly consumption by switching the red switch on the calendar. On the screen of the calendar, there will be a graph to show the dynamic of the cost of energy. Meanwhile, users could use the calendar to plan their future energy consumption.




Readability and easy-understanding were two major problems we found that needed to be improved. The introduction of token added more effort to users’ interaction process while the calendar added more cognitive load. More effort should be devoted to minimize the interaction process and decrease information to users


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