The impact of consumer advocates on regulatory policy in the electric utility sector

We examine the effect of consumer advocate participation in administrative procedures on regulatory policy. We use a unique panel database of rate reviews conducted for US electric utilities from 1980 to 2007 to assess how state consumer advocates affect Public Utility Commission decisions on utilities' allowed financial returns and rate structures. We find first that utilities experience fewer rate reviews in states with consumer advocates, consistent with utilities strategically postponing requests for rate increases. Second, after controlling for observed and unobserved state characteristics, we find that PUCs in states with consumer advocates permit returns on equity that are on average 0.45 percentage points lower than states without advocates-equivalent to a $7.9 million (3.7 %) reduction in average utility operating income, all else equal. Third, consumer advocates are associated with lower residential rates relative to other customer classes. Our findings provide statistical support for the thesis that institutionalizing interest group representation in administrative procedures is one way for legislatures indirectly to influence agency-determined policies.