This document describes enhancements made to the energy modeling framework in the OMNET++ wireless sensor network simulator. OMNET++ is a modular discrete event simulator written in C++ that allows models to be built from reusable components. The document discusses several frameworks within OMNET++ for modeling energy consumption, including MIXIM, INET, INETMANET, PAWIS, and CASTALIA. It provides details on how energy parameters can be configured in simulation profiles, how energy levels are updated during transmissions and other events, and how output is recorded to analyze energy performance.