Integration of the Chira–Soria Pumped Storage Hydropower Plant into the Gran CanariaEnergy System and Analysis of 2023 Demand Patterns

Abstract

Gran Canaria operates as an isolated energy system that must ensure high self-sufficiency to meet an annual demand of approximately 3.3 TWh. The planned integration of the Chira–Soria Pumped Hydroelectric Power Plant (PHES), expected by 2030, will significantly transform the island’s energy dynamics, presenting both challenges and opportunities [1]. The main challenges involve the need for greater system flexibility due to the increasing share of renewables — projected to grow from 381 MW to over 750 MW — and potential operational constraints related to environmental and hydrological factors. Conversely, the PHES facility will enhance grid stability by providing energy storage and balancing services, facilitating the integration of intermittent sources such as wind and solar power. As a mature and efficient technology, PHES will play a crucial role in improving energy management and system efficiency [2]. This study analyzes weekly and daily electricity demand patterns for 2023 and develops a simulation and optimization model to assess the optimal integration of the Chira–Soria plant into Gran Canaria’s energy system.