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Field Before After
Trial Start Date June 15, 2025 August 10, 2025
Trial End Date October 01, 2025 March 31, 2026
Last Published May 30, 2025 10:08 AM July 24, 2025 03:31 AM
Intervention Start Date June 15, 2025 August 10, 2025
Intervention End Date July 01, 2025 December 31, 2025
Experimental Design (Public) We will randomize approximately 75,000 customers into four trial groups (one control and three treatment groups) in partnership with an Irish utility. Customers in the treatment groups will receive emails that promote Time of Use tariffs offered by the utility. Each treatment group will receive different communication that appeals on different motives to switch to a Time of Use tariff. The control group will not receive any communication as part of this trial. We will randomize approximately 75,000 customers into three trial groups (one control and two treatment groups) in partnership with an Irish utility. Customers in the treatment groups will receive emails that promote Time of Use tariffs offered by the utility. Each treatment group will receive different communication that appeals on different motives to switch to a Time of Use tariff. The control group will not receive any communication as part of this trial.
Sample size (or number of clusters) by treatment arms 37,500 households control; 9,375 households per treatment group 58,000 households control; 8,500 households per treatment group
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