Law Commons^™

The Utility Of Finance, Shlomit Azgad-Tromer, Eric L. Talley

Faculty Scholarship

Public Utilities Commissions (PUCs) are charged with regulating a public utility’s rates at levels that serve the public’s interest while allowing the utility’s investors to earn a rate commensurate with that expected by businesses facing similar risks. Although the process of adjusting rates for risk is a staple of modern finance, we know surprisingly little about how well accomplish their regulatory mandate when judged against the benchmarks of financial economics. This article analyzes a dozen years’ worth of gas and electric rate-setting decisions from PUCs in the United States and Canada, demonstrating empirically that allowed returns on equity (ROE) diverge …