We present a sequence of simulations to analyse the collusive effects of transparency and different degrees of producer crossholding in energy markets. The results suggest that (a) the functional form of the crossholdings/market prices relationship is not linear and better defined by threshold...

We present an agent-based model of a multi-tier energy market. We show how reward interdependence between strategic business units within a vertically integrated firm can increase its profits in oligopolistic energy markets. The effects are shown to be distinct from those of the raising rivals'...