The Ouarzazate Project Phase 3 (NOOR III) – Molten Salt Thermal Energy Storage System is a 150,000kW energy storage project located in Ouarzazate, Draa-Tafilalet, Morocco.

The thermal energy storage project uses molten salt as its storage technology. The project was announced in 2015 and was commissioned in 2018.


The Ouarzazate Project Phase 3 (NOOR III) – Molten Salt Thermal Energy Storage System was developed by ACWA Power International and SENER Ingenieria y Sistemas. The project is owned by ACWA Power International (33.33%), Moroccan Agency for Sustainable Energy (33.33%) and SENER Ingenieria y Sistemas (33.33%), a subsidiary of SENER Grupo de Ingenieria.

The key applications of the project are renewables capacity firming and renewables energy time shift.

Contractors involved

ACWA Power International, Moroccan Agency for Sustainable Energy and SENER Ingenieria y Sistemas have delivered the project.

Additional information

Type of storage: 2-tank indirect.

About ACWA Power International

ACWA Power International (ACWA Power) is a power generation company. It is engaged in providing power and desalinated water at low cost efficiently. It also supplies electricity and potable water to its customers. It generates power through coal, oil, gas, thermal, solar and wind technologies. ACWA Power also offers operation and maintenance services to power and water desalination industry through its subsidiary, the First National Operations & Maintenance Company. The company has operations across the Middle East, Africa and Asia. ACWA Power is headquartered in Riyadh, Saudi Arabia.

About SENER Ingenieria y Sistemas

SENER Ingenieria y Sistemas SA (SENER) a subsidiary of SENER Grupo de Ingenieria SA, is a provider of construction services. The company offers planning, tunnels and geotechnical engineering, construction of structures, hydraulic and environmental engineering, architecture and systems integration solutions. It provides cross-cutting services including risk management, interface management, independent checking engineer, project management consultancy, document and configuration management solutions. SENER undertakes urban transportation and railways, roads, airports, ports, water and environment projects. The company has additional offices in Barcelona, Arganda del Rey, Tres Canto and Valencia, Spain. SENER is headquartered in Getxo, Vizcaya, Spain.


All publicly-announced energy storage projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects are sourced through secondary information sources such as country specific power players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.