1. A computer implemented method for performing leakage power analysis on an electronic design, comprising: using at least one processor for performing one or more actions, the one or more actions comprising: identifying an electronic design that is to undergo analysis; modeling a nonlinear behavior of leakage power by using a bi-exponential modeling for the leakage power that comprises a non-linear model with two exponential terms for one or more variations; and performing leakage power analysis upon the electronic design, wherein the leakage power analysis is performed based at least in part upon the bi-exponential modeling to analyze the nonlinear behavior.