Stochastic Model of Electricity Retailer Incorporating Aggregated Electric Vehicle Charging Uncertainty
This paper is a short version of a conference paper published at International Conference on European Energy Market (EEM), 28-31 May 2013, Stockholm, Sweden. It propose a model of an electricity retailer considering a future scenario where controlled charging of an aggregate of electric vehicles (EV) becomes a viable option. The retailer plans for purchase of electricity from the spot market while hedging its risks in the financial market, specifically the forward market. In a planning environment where the retailer has to make decisions for purchase of forward contracts ahead of spot market clearing, it faces uncertainties from spot market prices and customer demand. A stochastic programming approach with a financial risk measure is used to take into consideration the uncertainties described. A case study using the model is performed, the results of which indicate that EV customers and the retailer would benefit monetarily with increasing penetration of electric vehicles. The studies consecutively show that this is also the case when increasing fraction of customers opting for variable price contracts.