Subsea Cables & Internet Infrastructure

WACS cumulative outage time totals 4% of operating life and ACE 2%. In contrast, Equiano has had zero wet segment faults and under 48 hours of total down time. Equiano's minor outages have been due to power failures at Lisbon Equinix (LS1) and OADC Lagos (power feed equipment failure) plus backhaul fibre cuts between CLS and CT1 (Capetown Teraco 1). WACS and ACE defenders will argue that any reliability comparison is unfair due to the older cable's longer outage history. But their outages are concentrated in subsea caverns that Equiano avoids. So Equiano's reliability edge is probably real.

WACS has a lower latency than Equiano between Lagos and Lisbon, but you are going to pay a high price in outage time if history proves a good guide. The ACE record is significantly better than WACS, but both systems are light years behind Equiano. For reliability Equiano wins hands down. In fact, if you can only afford one cable and Equiano has your desired route, Equiano is the way to go. See the three cable's outage performance below. Equiano: RFS February, 2023. Wet system cumulative outage hours: 0. Dry System: Under 48 hours. WACS RFS: May 2012. Wet system cumulative outage hours: 4,903. Dry system outages: 140. Downtime/System Operational Life Span: 4%. ACE RFS: December 2012. Wet system cumulative outage hours: 2,472. Dry system outages: 70. Downtime/System Operational Life Span: 2%. What adds salt to the wound is that force majeure protected the capacity owners from any obl...

First Point: The Portugal and Spanish grids are tightly integrated with limited power connector to the rest of Europe. Solar and wind play a big role and both power sources suffer from what is known as frequency instability. Solar and wind generated power is much more volatile than traditional power sources. Traditional power generators have angular momentum inertia. It takes a while to up or lower the power due to the inertia in the spinning components. A natural gas turbine takes a few minutes to spin up. A nuclear reactor an hour to lower or increase output by 10% (French reactors do load following). Solar and wind create very volatile power fluctuations that can easily trigger a circuit breaker. In an isolated grid if a circuit breaker is triggered, the power in the remaining active part of the grid increases. This triggers more circuit breakers and usually brings down the entire grid. 2. The consequence of the first point is that avoiding a repeat of the Iberian Penisula outage re...