Title,Url,Last update date,Published at,First registered on,RCT_ID,DOI Number,Primary Investigator,Status,Start date,End date,Keywords,Country names,Other Primary Investigators,Jel code,Secondary IDs,Abstract,External Links,Sponsors,Partners,Intervention start date,Intervention end date,Intervention,Primary outcome end points,Primary outcome explanation,Secondary outcome end points,Secondary outcome explanation,Experimental design,Experimental design details,Randomization method,Randomization unit,Sample size number clusters,Sample size number observations,Sample size number arms,Minimum effect size,IRB,Analysis Plan Documents,Intervention completion date,Data collection completion,Data collection completion date,Number of clusters,Attrition correlated,Total number of observations,Treatment arms,Public data,Public data url,Program files,Program files url,Post trial documents csv,Relevant papers for csv The Effect of Messaging on Electric Vehicle Purchases,http://www.socialscienceregistry.org/trials/2248,"September 01, 2017",2017-09-01 10:57:11 -0400,2017-08-31,AEARCTR-0002248,10.1257/rct.2248-1.0,Kenneth Gillingham kenneth.gillingham@yale.edu,in_development,2017-05-31,2017-09-30,"[""environment_and_energy"", ""pro-social choices"", ""incentives""]",Private,Stephanie Weber (stephanie.weber@yale.edu) Yale University,"Q4, R4","","Electric vehicles made up 0.7 percent of the U.S. vehicle stock in 2015, despite state and federal subsidies and incentives. This study analyzes the effect of email messages with different emphases on the decision to purchase a subsidized electric vehicle. Households with residential solar photovoltaic installations are randomly assigned to receive an email alerting them to a substantial ($10,000) electric vehicle rebate and emphasizing either economic or environmental incentives for electric vehicle ownership. A third, control group is not informed for the rebate until after the experiment. Households interested in the incentive must fill out a survey to access a promotional code, after which they can purchase a subsidized Nissan LEAF. We will compare the effect of the alternate messaging on survey completion and electric vehicle purchasing behavior. ","","","",2017-05-31,2017-09-30,"",The main outcomes are actual purchases of the Nissan LEAF and the responses to the survey about electric vehicle preferences.,"",,,"Households participating in the residential solar investment program through the CT Green Bank are randomly assigned to one of two treatment groups or the control. All groups are informed of their eligibility for a $10,000 discount on a 2017 Nissan LEAF, but the economic treatment emails emphasize the financial incentives for EV ownership, while the environmental treatment emails focus on environmental motivations. The treatment emails are sent several weeks before the control group is informed of the incentive.",The Connecticut Green Bank ran the survey and collaborators at Yale received matched and anonymized data after the survey was run.,Randomization was performed using a uniform random number generator in Stata.,household,"21,751 households","21,751 households","7,164 households control, 7,178 households financial treatment, 7,409 households environmental treatment","","",None,,,,"",,"","",,"",,"","",""