q-exponential behavior of expected aggregated supply curves in   deregulated electricity markets
  It has been observed that the expected aggregated supply curves of the colombian electricity market present q-exponential behavior. The purpose of this article is to present evidence supporting the fact that q-exponentiality is already present in the expected aggregated supply curve of certain extremely simple idealized deregulated electricity markets where illegal interaction among competing firms is precluded. 
C. Cadavid, M. E. Puerta, J. D. Velez, and Juan F. Garcia
math.OC