Chalmers – ERO App for Roth residential building
The ERO App provides tenants in the study with information about their electric, district heating and water consumption. Additionally, the ERO app shows how much of the power generation is generated from hydro, nuclear, wind and fossil sources.
Electric energy consumption is displayed in relation to the ERO-threshold (see blue bars on 3rd screen in figure 3), which is self-set-up by the tenant him/herself. The ERO-app enables the tenant to see his/her individual consumption in relation to the availability of the preferred energy sources. This indicates to the tenant when there is time to save energy and when it would be be more suitable to perform an energy intensive activity such as drying laundry.
Consumption is monitored at apartment level and broken down to specific home appliances/services. Appliances as fridge, dishwasher, washing machine, dry tumbler and floor heating in the bathroom/shower area can be monitored and controlled from the app to enable and stimulate users to save electrical energy in an encouraging and motivating way. Because of safety regulations, only the control of the floor heating is currently available to the tenants, the rest of appliances can only be monitored, see figure 9.
Further, district heating consumption for the entire building is displayed in the app. The tenants cannot control the district heating in any way yet, but the functionality has been prepared to enable uploading of individual user temperature preferences to give the heating providers consumer feedback in the future.
Finally, also hot- and cold-water consumption for each apartment are monitored and visualised in the ERO app. The water consumption is displayed in relation to the historic average to give a daily/weekly water budget to easily reveal extravagant deviations in consumption on a daily/weekly comparison level.