Sateliot, the Spanish operator building a satellite network for low-power IoT devices, has put five more satellites into orbit, roughly doubling the size of its constellation. The spacecraft were built by Alén Space, also Spanish, and launched on 2 October aboard SpaceX's Transporter-18 rideshare from Vandenberg Space Force Base in California, on a mission Sateliot calls Draconis. The company now has 11 satellites in orbit.
Each is a 6U CubeSat measuring 20 by 10 by 35 centimetres and weighing 10 kilograms, flying at 510 kilometres with a five-year design life. Alén Space says this generation carries an optimised payload, more onboard storage, an upgraded flight computer, better attitude control and radiation-resistant memory.
The practical effect is frequency rather than reach. Sateliot says the additions roughly double the average number of daily passes over a given point and halve the time a device waits between them in places with no terrestrial mobile coverage.
Why This Network Is Different From Satellite IoT Before It
Sateliot's proposition rests on the standard rather than the spacecraft. The network runs 3GPP Release 17 narrowband IoT over a non-terrestrial network, which means the same modules and chipsets a device maker already uses for terrestrial NB-IoT can reach a satellite with no proprietary terminal and no second radio.
The commercial structure follows from that. Sateliot sells to mobile operators as a roaming partner rather than selling against them, so the end customer keeps their existing operator relationship and their devices move between ground networks and satellite as coverage allows. Telefónica, Deutsche Telekom and VIVO in Brazil are among the operators signed up.
The size of the opportunity comes from coverage. Terrestrial mobile networks reach roughly 20% of the planet's land surface. The remaining 80% is where pipelines, livestock, shipping containers, water infrastructure and environmental sensors actually sit.
What It Is Useful For Today
With 11 satellites, coverage is intermittent by design. A device transmits when a satellite is overhead and waits when one is not, which makes this suitable for anything that reports periodically and tolerates delay, and unsuitable for anything needing a response.
Agriculture, mining, logistics and environmental monitoring are the verticals Sateliot names, and they share that profile: battery-powered devices sending small messages on a schedule, where a gap of hours between readings is an inconvenience rather than a failure. It is the same design envelope that low-power networks were built for on the ground, extended to places where no gateway will ever be installed.
"We have validated the technology, and we are now increasing capacity and service frequency to scale the service," said Jaume Sanpera, Sateliot's chief executive and co-founder, which is a fair description of where the company is.
The Distance Between 11 And 500
Sateliot's plan calls for a constellation of more than 500 satellites built across successive generations, moving from large-scale IoT towards higher-capacity and mission-critical services. The next generation, which the company calls Tritó, is intended to follow 3GPP Release 19.
Getting there is a financing question. Sateliot opened a €100M Series C in April, structured as equity with a possible debt component and up to half of it covered by public match funding, expected to close during the summer. That round was earmarked for 16 further satellites and a demonstrator for voice, video and data over 5G New Radio.
The investor list is unusual for a satellite startup and tells you something about how the company is positioned. Indra, Cellnex, Banco Santander, Hyperion, the European Investment Bank and Spanish state vehicles are all shareholders, with the Spanish government holding 18.7%.
At the time of that announcement Sateliot reported €270M in precontracts with more than 400 customers across 60 countries. Precontracts are intentions rather than revenue, and the figure is best read as pipeline.
A Field Filling Up Fast
Satellite connectivity for devices has become one of the more contested parts of the industry. AST SpaceMobile is building large satellites to serve ordinary phones directly, a different technical bet entirely, while SpaceX has its own direct-to-cell service, Skylo delivers Release 17 narrowband service over geostationary satellites, and OQ Technology, Iridium and others target overlapping parts of the same market.
The standards work is what separates this generation from the proprietary satellite IoT services that came before. When connectivity runs on 3GPP specifications, a device maker choosing a module is not choosing a satellite operator for the life of the product, which lowers the risk of designing one in and should keep pricing honest as more operators arrive.
Transporter-18 itself illustrated how varied this traffic has become. The same rideshare carried Google's prototype satellite holding four of its AI processors, alongside around 129 other spacecraft.
Capacity Is Now The Constraint
Sateliot has done the hard part, which is proving that an ordinary NB-IoT device can reach a satellite using the same chip it uses on the ground, and that mobile operators will carry the traffic under normal roaming arrangements. What it has not yet done is build enough satellites for the service to feel continuous.
Eleven spacecraft halve a waiting time that was already long. Companies evaluating this should size their expectations to the constellation that exists rather than the one in the plan, and ask what revisit time they will get in the specific places their assets sit, because that number is the product.
