Social media giant, Facebook Inc. and some of the world’s largest telecoms carriers, China Mobile Limited and MTN Group Limited, are set to build a wider-than-earlier planned giant sub-sea cable in Nigeria and other parts of Africa

On inauguration, the subsea cable will join five other international submarine cables, with over 40 terabytes per second (Tbps) of capacity, including SAT3 cable, MainOne cable, Glo1 cable, ACE cable and WACS cable, landed by Natcom, MainOne, Globacom, Dolphin Telecom and MTN.

Already, the capacities of these submarine cables are underutilized as about 30 percent of the total capacity is currently in use. A group, the Association of Cable operators of Nigeria (ASCON) two years ago, said less than 10 percent of the five cables are in use.

The companies plan to add the Indian Ocean island countries of Seychelles and Comoros, as well as Angola and a new connection to Nigeria, the company said yesterday.

This is in addition to a recently announced link to the Canary Islands and would bring connection-landings to 35 in 26 countries.

“The significant investment by Facebook in 2Africa builds on several other investments we have made in the continent, including infrastructure investments in South Africa, Uganda, Nigeria and the Democratic Republic of Congo,” a Facebook spokesperson said via email.

The undersea cable sector is experiencing a resurgence, with Facebook and Alphabet Inc.’s Google behind about 80 percent of recent investments in transatlantic links. The tech giants are seeking to tap the growing demand for fast-data transfers used for everything from streaming movies to social messaging and telemedicine. During the 1990s dot-com boom, phone companies spent more than $20 billion laying fiber-optic lines under the oceans.

The project is part of Facebook’s long-held plans to lead the race to provide more reliable and faster internet in Africa, a continent of more than 1.2 billion people with an increasing up take of smartphones. The U.S. social-media giant first announced plans for a new undersea cable in May 2020. That followed attempts to launch a satellite in 2016 to beam signal around the continent — but the SpaceX rocket carrying the technology blew up.

2Africa, set to be one of the largest subsea cable projects in the world, will cost just under $1 billion, Bloomberg reported last May, citing people familiar with the matter. Manufacturing of the first segments of the infrastructure has started in the U.S., according to the statement. Nokia Oyj’ Alcatel Submarine Networks was picked to build the cable.

The marine surveys for the new sections of the cable will probably be completed by the end of the year, according to the companies. The 37,000-kilometer (23,000 miles) long cable will connect Africa, Europe, and the Middle East.

2Africa is expected to come into operation by 2024 and will deliver more than the combined capacity of all sub-sea cables that are currently serving Africa, according to the statement. Other project partners include Telecom Egypt Co, the U.K.’s Vodafone Group Plc, and Paris-based Orange SA.