Certain aspects of the present disclosure provide techniques for transmit energy allocation. A method that may be performed by a wireless device includes establishing first and second wireless communication connections and allocating an available energy between the first and second wireless communication connections by: allocating a first portion of the available energy to the first wireless communication connection based at least in part on one or more functionalities associated with the first wireless communication connection; allocating a second portion of the available energy to the second wireless communication connection based at least in part on one or more functionalities associated with the second wireless communication connection; and allocating a third portion of the available energy to the first and/or the second wireless communication connections based at least in part on energy efficiencies of the first and second wireless communication connections.