Arca HES Hourly and Daily Hydropower Generation Dataset (2019–2025)

Description

This dataset was compiled to support day-ahead hydropower generation forecasting research at the Arca Hydroelectric Power Plant (Arca HES), a run-of-river facility with an installed capacity of 16.35 MW located in the Eastern Black Sea Region of Türkiye, fed by the Solaklı Stream watershed. The dataset integrates three distinct sources: hourly electricity generation values (MWh) and turbine unit availability plans for five generation units (GU1–GU5) obtained from the plant's operational archives; instantaneous streamflow rate (m³/s) provided by the State Hydraulic Works (DSİ) from continuous flow gauge records on the Solaklı Stream; and hourly meteorological variables (air temperature, surface pressure, high-cloud cover, and snowfall) extracted from the ERA5-Land reanalysis dataset at 0.1° × 0.1° spatial resolution for the grid points nearest to the Çaykara and Dernekpazarı districts upstream of the watershed. The dataset covers January 1, 2019 to December 31, 2025, yielding 61,368 hourly and 2,532 daily records. After removal of missing values and application of a three-criterion physical outlier detection procedure, 60,624 usable hourly observations remain. The dataset was used to develop and evaluate a residual hybrid XGBoost+GRU forecasting architecture optimised with the Grey Wolf Optimizer (GWO), achieving R² = 0.8604 at hourly and R² = 0.8430 at daily resolution. Operational data were provided by Gursu-Arca Hydroelectric Energy. ERA5-Land data are subject to the Copernicus Climate Change Service licence. For data access, please contact the corresponding author. Citation: Erdogan, Y.V., Akyazi, O., Aslan, M., Aydin, H., Oden, M.A. (2026). Machine Learning-Based Day-Ahead Forecasting of Hydropower Generation Using Hourly Operational and Meteorological Data: A Case Study of Arca Hydroelectric Power Plant (Türkiye). Submitted to Applied Energy. Source code: https://github.com/aslamusa/Hydropower_Daily_Hourly

Institutions

• Karadeniz Technical University

  Trabzon, Trabzon

Categories

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