Impact of Non-Routine Device Utilization on Local Electricity Market Trading Deviations

European Union legislation stimulates more participation of prosumers in future local electricity markets (LEMs). These LEMs could require bidding for or by individuals, which brings the responsibility of deviating from agreed-upon bids closer to prosumers. Who should bear this responsibility is still being determined because the costs for energy suppliers could become too significant, and it is unrealistic to expect prosumers to plan all their devices. Non-routine utilization, using devices sporadically and unpredictably, represents freedom of device usage but could significantly contribute to deviations. Understanding the impact of this utilization on deviations will help to determine the responsibilities of deviations in LEMs better. Therefore, this study aims to take a first step and see the impact of non-routine utilization on LEM trading deviations by simulating this utilization for various appliances and DERs in combination with an LEM. Non-routine utilization of wet appliances contributes the most to deviations (15072 kWh or 4.99% or yearly consumption). However, it is comparable to distribution grid losses, and strategic use of home energy management systems can alleviate deviations caused by non-routine utilization by up to 100%.