We evaluate the impact of a social information campaign through the design and launch of "Opower-style"home waste reports. The report kicked-off in July 2020 and is delivered by post and email to customersevery quarter, after the waste bill. The reference period of the report is the same of that reported in the bill.The report includes the following elements: 1. static neighbour comparison, 2. Cumulative solid waste disposal, 3. Dynamic feedback, 4. Access to waste collection centers.
The experimental design relies on the random assignment of two thirds of eligible customers to a treatment group which receives the report and one third to a control group, which does not. Within the group of treated households receiving the report, half receives the standard report as described above. The other half receives the report, as described above, along with a clear reference to the disposal cap, displayed in the cumulative solid waste disposal section. This information allows treated customers to keep track oftheir performance against the cap, which is calculated on a yearly basis. These customers also visualize an alert if the volume disposed in the quarter exceeds one fourth of the yearly cap assigned.