Nonlinear Prices and the Regulated Firm
研究受监管的公用事业公司采用非线性定价的问题，发现回报率监管会降低整个价格表，部分边际价格低于真实边际成本，且从线性转向非线性定价可明确提高福利。
This paper examines the problem of a regulated utility that sells output according to a nonlinear price schedule. Three results are obtained. First, rate-of-return regulation lowers the price schedule charged by the firm along its entire length. Second, some units of output will always be sold at a marginal price below true marginal cost. Third, a move from linear to nonlinear prices at a given fair rate-of-return can lead to an unambiguous increase in welfare.