Stochastic Emission Constraints on Unit Commitment

This paper presents an enhanced unit commitment for a price-taker generation company in order to consider the uncertainty on a deregulated electricity market that includes day-ahead bidding and bilateral contracts. The unit commitment is supported by a modeling approach requiring a stochastic optimization-based method for finding the schedule of the units. The approach allows for the modeling of the usual required technical operating constraints on the thermal units. The stochastic nature of the problem is due to the uncertainty on the electricity market prices and is modeled by a scenario set approximation. Additionally, constraints on emission allowances are considered in order to mitigate carbon footprint. Numerical results from a case study are presented to illustrate the performance of the proposed approach.