Model Specification

The model specification is used in conjunction with data from the prepared dataset for regression analysis. Regression analysis yields β, the savings per day per household coefficient. In the model specification below, i denotes the ith household and t denotes the t th month of the post-treatment period.

This equation is made of the following components:

Equation Component	Description
	The average daily usage for meter read t for household i in the post-treatment period.
	An indicator that household i is assigned to the treatment group.
	A vector of three baseline usage control variables shown in the next three rows.
average preusage	The average daily usage across household i’s available pre-treatment meter reads. If missing, this value is imputed with the average pre-usage of all customers in the population.
average preusage winter	The average daily usage over the months of December through March across household i’s available pre-treatment meter reads. If missing, this value is imputed with household i’s value for
average preusage summer	The average daily usage over the months of June through September across household i’s available pre-treatment meter reads. If missing, this value is imputed with household i’s value for
	A set of indicators for each month-year in the post-treatment period.
	Coefficients represent the relationship of the average preusage control variables to post-treatment usage. γt coefficients can vary by month-year.
	An error term.