Grand Inga Hydroelectric Project: Location, Construction cost, impact and FAQs

Grand Inga Hydroelectric Project Status update: The Grand Inga is considered as the greatest potential hydroelectric project in the world. It is the central plank of an ambitious scheme to wire the entire continent for electricity.

A number of dams have been built or are planned for the lower end of the Congo River in the Democratic Republic of the Congo (DRC), but the proposed dam would be the largest of them all. The first of six stages of construction, the Inga III Dam will bring 40, 000 MW to Grand Inga once it is completed. The output would be approximately twice that of China’s Three Gorges Dam, the world’s largest.

Location

Western Democratic Republic of the Congo is home to the Inga dams, which are situated on the Congo River about 225 kilometres (140 miles) south-west of Kinshasa. The Congo River is Africa’s second-longest river at 4,700 kilometres and the world’s second-largest river by flow (42,000 m3/s), after only the Amazon River in Brazil. When it finally reaches the Atlantic Ocean, it creates the renowned “Congo Plume” at the equator. The river’s heavy nutrient flow causes a high-productivity area, or plume, that can be seen from as far as 800 kilometres offshore. The plume is a major carbon sink, contributing between 40 and 80 percent to global carbon productivity.

Construction cost

The construction cost of Grand Inga Hydroelectric Project is US$80 billion.

Grand Inga Hydroelectric Project: Current work status

In August 2021, Ivanhoe Mines Energy DRC and La Société Nationale d’ Électricité (SNEL), the state-owned power company of the Democratic Republic of the Congo (DRC), have extended their existing financing agreement under a public-private partnership so that turbine 5, one of eight turbines at the Inga II Hydroelectric Complex on the Congo River, can be upgraded.

The Kamoa-Kakula Copper Mine is situated in the Kolwezi District of Lualaba in the Democratic Republic of the Congo; Ivanhoe, a subsidiary of Kamoa Copper SA, is responsible for providing the mine with clean, renewable electricity. Ivanhoe and SNEL previously announced a framework agreement for this financing arrangement in April of this year (2021), and this extension of that deal builds on that agreement.

Grand Inga Hydroelectric Project: Impact

The Grand Inga is an enormous undertaking that will necessitate substantial resources and careful management during the whole tendering and construction phases. In light of past experience, the chances of crooked arrangements and constantly rising prices are significant. The unique ecological processes of this region are expected to have far-reaching ecological effects, such as the capture of nutrients and sediments and the subsequent loss of the mid-Atlantic plume. In addition to potentially causing massive methane emissions that contribute to global warming, redirecting the flow of the Congo River to construct a reservoir will induce flooding in the Bundi Valley, destroying agricultural land and natural habitats in the area. A change in the dominating species and a loss of biodiversity could be the result of decreased flow in the Congo River. Water-borne vectors, such the “malanquin” mosquito, may find the flooded area to be an ideal hatching ground.

Grand Inga Hydroelectric Project: FAQs

Where is the Congo’s greatest dam located?

Located in western  Democratic Republic of Congo (DRC) on the Congo River, the Grand Inga Dam is the largest proposed hydropower scheme in the world.

What is the smallest dam that has ever been built?

The Inks Dam on the Colorado River is reportedly the smallest dam in the world. It is 97 feet (29.4 metres) in height, and 1,550 feet (472 metres) in length.

Which dam in the world is the oldest?

Lake Homs is the world’s first and oldest dam in the world. Located in close proximity to Homs, Syria, this dam was constructed by the Romans. Another name for it is the Qattinah Dam.