We prove that in a closed economy without distortionary taxation, the welfare of a representativeconsumer is summarized to a …rst order by the current and expected future values of the Solowproductivity residual in level and by the initial endowment of capital. The equivalence holds if...

We prove that the change in welfare of a representative consumer is summarized by thecurrent and expected future values of the standard Solow productivity residual. Theequivalence holds if the representative household maximizes utility while taking pricesparametrically. This result justifies TFP...