Gomes, Bruno A.Saraiva, João T.Pires Neves, Luís2025-06-112025-06-112009-06B. A. Gomes, J. T. Saraiva and L. M. Neves, "Impact of load and generation price uncertainties in spot prices," 2009 IEEE Bucharest PowerTech, Bucharest, Romania, 2009, pp. 1-6, doi: https://doi.org/10.1109/PTC.2009.5282148.978-1-4244-2234-0http://hdl.handle.net/10400.8/13196Paper accepted for presentation at 2009 IEEE Bucharest Power Tech Conference, June 28th - July 2nd, Bucharest, Romania. Article number 5282148 - 2009 IEEE Bucharest PowerTech: Innovative Ideas Toward the Electrical Grid of the Future; Bucharest; Romania; 28 June 2009 through 2 July 2009; Category number CFP09815-CDR; Code 78575In this paper it is presented a formulation for the DC Optimal Power Flow problem considering load and generation cost uncertainties and the corresponding solution algorithms. The paper also details the algorithms implemented to allow the integration of losses on the results as well the algorithm developed to compute the nodal marginal price in the presence of such uncertainties. Since loads and generation costs are represented by fuzzy numbers, nodal marginal prices are no longer represented by deterministic values, but instead, by membership functions. To illustrate the application of the proposed algorithms, this paper also includes results based on a small 3 bus system and on the IEEE 24 bus/38 branch test system.engUncertaintiesfuzzy modelsDC optimal power flowmultiparametric programmingnodal marginal pricesconference paper10.1109/ptc.2009.5282148