Short-Term Electricity Price Forecasting with Stacked Denoising Autoencoders

A short-term forecasting of the electricity price with data-driven algorithms is studied in this research. A Stacked Denoising Autoencoder (SDA) model, a class of deep Neural Networks (DNN), and its extended version are utilized to forecast the electricity price hourly. Data collected in Nebraska, Arkansas, Louisiana, Texas, and Indiana hubs in U.S. are utilized. Two types of forecasting, the online hourly forecasting and day-ahead hourly forecasting, are examined. In on-line forecasting, SDA models are compared with data-driven approaches including the classical neural networks (NN), support vector machine (SVM), multivariate adaptive regression splines (MARS), and least absolute shrinkage and selection operator (Lasso). In day-ahead forecasting, the effectiveness of SDA models is further validated through comparing with industrial results and a recently reported method. Computational results demonstrate that SDA models are capable to accurately forecast electricity prices and the extended SDA model further improves the forecasting performance.