The participation of photovoltaic (PV) power into the energy market requires the development of accurate forecasting models to alleviate the imbalance penalties and ensure the viability of the investments. Several forecasting models have been proposed, focusing on different forecasting horizons. However, their implementation does not consider the energy market rules. Here we present a Day-Ahead Market (DAM)/Intra-Day Market (IDM) forecasting tool which comprises of four individual Deep Learning (DL) forecasters to facilitate the participation of PV power into the DAM and the three auctions of IDM. Different combinations of historical and predicted data of cloud cover and temperature are examined on Convolutional Neural Network and Transformer models for the forecasters’ development. The proposed tool is tested on five PV systems, while the aggregated production is also examined considering their spatial characteristics. The results indicate that the proposed forecasting tool could decrease the Mean Absolute Error up to 31.96% and 32.45% for DAM and IDM respectively.
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