Abstract While economic theories indicate that market power by downstream firms can potentially counteract upstream, antitrust policy is opaque as to whether incorporate countervailing in merger analyses. We use detailed national claims data from the health care sector evaluate insurer does indeed limit hospitals' exercise of power. estimate willingness-to-pay models hospital across analysis ar...

This paper explores a mathematical method for detecting groups of generators in an electric power system that have the potential to benefit from exercising market power. Applications of this method include metrics for measuring or detecting the possibility of market power. This paper focuses on the properties of revenue and dispatch to bid sensitivity matrices, and develops methods of identifyi...

Substantial increases in retail concentration (particularly in Europe) raise concerns about the welfare implications for consumers. In a formal model, we argue that retailer market power reduces upstream firms incentives to introduce new products. On the basis of a survey of firms in German food manufacturing, the results of a negative binomial regression model supports the proposition of a det...

The market for power semiconductor modules is spreading not only to general-purpose inverters, servo motor drives, NC machine tools and elevators but also to new applications through the realization of electric vehicles and renewable energy systems. Fuji Electric has developed various power modules in response to market needs, and as the market expands in the future, the required performance fo...