Context This dataset is a daily time series of electricity demand, generation and prices in Spain from 2014 to 2018. It is gathered from ESIOS, a website managed by REE (Red Electrica Espa?ola) which is the Spanish TSO (Transmission System Operator) A TSO main function is to operate the electrical system and to invest in new transmission (high voltage) infrastructure. (https://www.ree.es/en/about-us/business-activities/electricity-business-in-Spain) As a system operator, REE forecast electricity demand and offer and runs daily actions . As a result of daily actions, a PBF Plan Básico de Funcionamiento) is yielded. This is a basic schedulling of energy production (upon it several mechanisms are triggerd to ensure supply) Enery and prices data can be downloaded from : https://www.esios.ree.es/en OMIE (Operador del Mercado Iberico de Electricidad) is responsible for running those daily actions and also offers interesting data. http://www.omie.es/en/inicio Content Original values are kept, so some names in Spanish are shown. Column name is describes each time series, so I provide a description of each name: * Demanda programada PBF total (MWh): Schedulled Total Demand * Demanda real (MW): Actual demanded power * Energía asignada en Mercado SPOT Diario Espa?a (MWh): Energy traded in daily spot Spanish market (OMIE) * Energía asignada en Mercado SPOT Diario Francia (MWh): Energy traded in daily spot French market * Generación programada PBF Carbón (MWh): Schedulled Coal electricity generation * Generación programada PBF Ciclo combinado (MWh): Schedulled Combined Cycle electricity generation * Generación programada PBF Eólica: (MWh): Schedulled Wind electricity generation * Generación programada PBF Gas Natural Cogeneración (MWh): Schedulled Natural Gas electricity Co-generation * Generación programada PBF Nuclear (MWh): Schedulled Nuclear electricity generation * Generación programada PBF Solar fotovoltaica (MWh): Schedulled Photovoltaic electricity generation * Generación programada PBF Turbinación bombeo (MWh): Schedulled Reversible-Hydro electricity generation * Generación programada PBF UGH + no UGH (MWh): Schedulled Total Hydro electricity generation * Generación programada PBF total (MWh): Schedulled Total electricity generation * Precio mercado SPOT Diario ESP (€/MWh): Daily spot Spain market price * Precio mercado SPOT Diario FRA (€/MWh): Daily spot France market price Precio mercado SPOT Diario POR (€/MWh): Daily spot Portugal market price * Rentas de congestión mecanismos implícitos diario Francia exportación (€/MWh): Daily spot export from France price * Rentas de congestión mecanismos implícitos diario Francia importación (€/MWh): Daily spot import to France price * Rentas de congestión mecanismos implícitos diario Portugal exportación (€/MWh): Daily spot export from Portugal price * Rentas de congestión mecanismos implícitos diario Portugal importación (€/MWh): Daily spot import to Portugal price Original data format is maintained, just in case it is necessary to append new data downloaded from Esios, as a result, geo columns are null. Inspiration I love energy and data and I couldn't find many datasets to practice daily forecasts. I hope that many data and energy enthusiasts find it interesting and enjoy it.