Are the benefits of electrification realized only in the long run? Evidence from rural India

Experimental studies find smaller benefits of electrification than observational studies.
Is this because the latter typically observe benefits after a longer period of time? Using
three waves of data from the Human Development Profile of India and the Indian Household
Development Survey of Indian rural households, we quantify the impacts of short-term
(0-7 years) and long-term (7-17 years) electricity access on household well-being. We use
a propensity-score-weighted-difference-in-differences design that controls for spillover effects
and find that electricity access increases consumption and education in the long term, and
reduces the time spent by women on fuel collection, although we do not find significant
effects on agricultural income, agricultural land holding, and kerosene consumption. Per
capita consumption grows by 18 percentage points more over seven years in the long-term
connected group than in the control group. Short-term effects are smaller and not statistically
significant for any outcome variable.