Summary

  • ReuNION is a planned, more direct route between La Réunion and South Africa, not a commissioned alternative today. Its announced 16 fibre pairs at 20 Tb/s each imply 320 Tb/s of design capacity, not lit, sold or independently available capacity.
  • Public records disclose an €88.3 million total project cost and a €57 million ERDF-eligible spending plan, while a separate CEF award and outstanding loan, consortium and billing conditions complicate any simple “grant-funded” description.
  • The commercial test is whether financing, permits, cable manufacture and laying, the island landing and terrestrial interconnection move together quickly enough to create a usable route before the region’s ageing systems become a constraint.

The number is a plan, not a route

On 2 September 2026 Orange announced ReuNION with Telco OI, Réunicable and La Réunion Connectée. The project is intended to link La Réunion more directly to South Africa and add a regional international path. Orange gives a design of 16 fibre pairs, each rated at 20 terabits per second. Multiplying the two yields 320 Tb/s, but the release does not say that this capacity is lit, contractually allocated, sold or already available to operators.

That distinction matters more on an island than the headline suggests. A cable system is a chain: a route must be surveyed; permits and shore works must be completed; wet plant must be built and laid; power and landing equipment must work; and the cable must interconnect with terrestrial networks. A fibre pair that has been specified but not commissioned cannot yet provide route diversity or carry customer traffic.

Separate roles, separate funding gates

The public disclosures divide the work. Orange says it will act as the landing party, handling permits, coastal civil engineering, a secure landing station and interconnection with local networks. Orange Marine is to lay the cable, while Alcatel Submarine Networks is to design and manufacture the system. The Regional Council describes Réunion THD as the public consortium lead and proposed Central Billing Party; a February 2026 decision supports integrating a ReuNION-specific public industrial and commercial service into its existing service, under the name La Réunion Connectée.

The financing records need equally careful separation. The European Commission’s CEF Digital award decision lists €20 million for ReuNION. A separate Regional Council financing plan records total project cost of €88.3 million and €57 million of eligible expenditure, allocated as €30 million ERDF, €6.5 million from the State and €20.5 million from beneficiaries. Those figures do not justify adding every public amount together and calling the result a fully closed subsidy package.

The Council says the final grant depends on a signed consortium agreement, a Commission decision adjusting the CEF eligible-cost base, signed mandates, appointment of the Central Billing Party and definitive bank-loan approval.

The distinction is economically material. Eligible spending is not the same as total cost; an award is not proof of payment; and a loan is not a grant. Nor do the published records disclose the consortium members’ ownership shares, loan terms, capacity-sale contracts or the price other operators will pay to use the cable. Those are essential inputs to an eventual return calculation.

The delivery clock is the market signal

La Réunion’s December 2025 regional planning sheet says the SAFE cable was expected to reach the end of its life in 2027 and uses four to five years as a typical new-cable deployment period. This is a public planning premise, not an independently verified shutdown date or proof that SAFE will fail. It does, however, explain why funding, marine surveys, permits and construction sequencing matter more than the 320 Tb/s arithmetic.

Orange’s September announcement says detailed marine surveys and permit applications are still ahead, alongside manufacturing and cable laying. It gives no ready-for-service date. That leaves a real monitoring question: can the consortium turn the public approvals and proposed funding structure into a contracted, permitted and connected system on a schedule that overlaps the lifecycle risk identified by the Region? The documents do not yet answer it.

For operators, the value of ReuNION will ultimately depend on an alternate path they can buy, connect and rely on—not the number of pairs on a design sheet. For taxpayers and investors, the relevant evidence is similarly practical: whether each funding source clears its own conditions, whether construction reaches the shore and whether the landing and access arrangements allow capacity to be used. Until then, resilience is the project objective, not an observed result.

Sources