Red Eléctrica awards NHOA Energy a €99.87 million contract for battery systems in Mercadal and San Antonio
Type: Supply Agreement · Technology: Storage · Country: Spain · Capacity: 140 MW · Announced: 2026-09-18
Red Eléctrica awarded NHOA Energy a €99.87 million contract in November 2024 for the supply of battery systems for the Mercadal and San Antonio substations. This project involves the installation of 140 MW of power and 105 MWh of storage capacity across both facilities, making it the largest SATA (Storage as Transmission Asset) system in Southern Europe. The Mercadal installation, with an investment of €50 million, includes two 25 MW systems with a combined capacity of 37.5 MWh. The San Antonio project adds 90 MW of power and 67.5 MWh of storage, significantly reinforcing the electrical link between Mallorca and Ibiza.
Analysis
Red Eléctrica awarded NHOA Energy a €99.87 million contract on 18 September 2026 to supply battery systems delivering 140 MW of power and 105 MWh of storage across the Mercadal and San Antonio substations in Spain. The Mercadal installation, valued at €50 million, comprises two 25 MW systems with a combined capacity of 37.5 MWh, while the San Antonio project adds 90 MW of power and 67.5 MWh of storage to reinforce the Mallorca‑Ibiza electrical link. The contract creates the largest Storage‑as‑Transmission‑Asset (SATA) system in Southern Europe.
Key points
- Red Eléctrica awarded NHOA Energy €99.87 million contract on 18 Sept 2026
- Total capacity 140 MW power and 105 MWh storage across Mercadal and San Antonio
- Mercadal component €50 million, two 25 MW units, 37.5 MWh storage
- San Antonio component 90 MW power, 67.5 MWh storage
- Project described as the largest SATA system in Southern Europe
Counterparties
- NHOA Energy (Supplier)
- Red Eléctrica (Buyer)
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