Balancing Energy Consumption and Losses with Energy Packet Network Models

We present models of Energy Packet Net-works with a single and multiple class of customers. Such models were recently developed to study the interactions between IT capabilities and its energy consumption. These models are based on a discrete model of energy (the so called Energy Packets), some assumptions on the stochastic durations of energy production and consumption and the explicit description of the interactions between energy needed for computations or data transmission. These stochastic models have, under some classical assumptions on the arrivals processes, a steady-state distribution which has a product form. Such a closed form solution allows to optimize the design of the system and balance between losses, delay and energy.