Tâmega: one of the most important initiatives in the energy sector in Portuguese history

The project entails an investment of €1,500 million to build three new plants (Gouvães, Daivões and Alto Tâmega) on the Tâmega River.

Tâmega infraestructure: main project data.#RRSSTâmega infraestructure: main project data.

This Iberdrola's flagship project involves the construction of three new power plants: Gouvães, Daivões and Alto Tâmega, which will be erected over the Tâmega River, a tributary of the Duero in the north of Portugal, close to Oporto. With an investment of over €1,500 million, the three power plants will have a total installed capacity of 1,158 MW and will be capable of producing over 1,760 GWh per year.

Iberdrola, one of the top hydropower companies, has already reached the first milestone of the works of this hydraulic complex after excavating the first tunnel (with a length of approximately 400 m) used to bypass the Tâmega River, which has led to the construction of the dam and the Daivões power plant.

The company has completed the construction work of the Gouvães quarry, which will be used to produce the aggregates that will be exclusively used in the concrete of the Tâmega hydroelectric complex, including the concrete used to build the storage dams. This quarry is expected to produce more than 2 million tons of aggregates, the equivalent to the weight of 5,000 fully equipped Boeing 747s carrying passengers.

It is expected that Gouvâes will start operating in 2021, Daivões in 2022 and Alto Tâmega in 2023.

This infrastructure is another form of evidence of Iberdrola's permanent commitment to clean energy generation technologies, as well as a very important contribution to the Iberian electricity market.

Hydroelectric power: renewable and autochthonous

The company is leader in energy storage with an installed power of 4,400 MW using pumping technology, the current most efficient storage method, since it generates no atmospheric contaminating emissions and its performance is much higher than that of the best storage banks in the market.

Hydroelectric power plants like the Tâmega are a safeguard for the electrical system. The largest facility of this kind in Europe is the Cortes-La Muela complex in Valencia.

Sociocultural and Environmental Action Plan

This Plan, developed in the context of the Tâmega project and signed by the different Municipal Chambers participating in it, includes a record figure of over 50 million euros for the economic, social and cultural development of the Alto Tâmega region.

The purpose of the program is to contribute to the development of the region and improve the standard of living of the population — it's estimated that 3,500 direct and 10,000 indirect jobs will be generated during the execution of the complex — as well as to preserve the environment where the project will be carried out, from an environmental point of view. Planned actions will be carried out in the municipalities of Ribeira de Pena, Vila Pouca de Aguiar, Cabeceiras de Basto, Boticas, Chaves, Valpaços and Montalegre.

An example is the region of Boticas, in which Iberdrola has participated in the development of the Boticas, Nature and Biodiversity park, building accommodation for visitors and encouraging actions for the compensation of the natural environment's flora and fauna.

In addition to these projects, Iberdrola is funding other activities, such as the improvement of the public sewer and water supply networks, upgrading and optimising sporting facilities, upgrading the equipment used by fire brigades, new recreational areas, etc. In addition, it has co-funded the construction of the new and flagship facilities and installations in the area, such as the Alvão Village Campsite, the Pedras Salgadas Horse Riding Centre or the Educational Health Resort in Vidago.

With this type of aid, Iberdrola consolidates its commitment to sustainability and social responsibility.