Fig. 3
From: Making the smart meter social promotes long-term energy conservation

Average daily kWh consumption across experimental conditions for the 2-years period. Marginal means are shown for each experimental condition (standalone feedback, cost feedback, normative feedback, control). Error bars represent the standard error the control group’ marginal means resulting from an oneway repeated measures ANCOVA (IHD condition on average daily energy consumption; covariate: baseline kWh consumption)