IRIS² Got Bigger and 48 Percent More Expensive. Europe Signed Anyway. — Deep Dive
Rendezvous 1 repriced Europe's sovereign constellation. What the €15.6 billion agreement changes for SES, Eutelsat and buyers of sovereign capacity.
IRIS² Got Bigger and 48 Percent More Expensive. Europe Signed Anyway.
Rendezvous 1 closed last week with 348 satellites and a €15.6 billion estimate, against the 290 satellites and €10.55 billion Europe conceded twenty months ago. The interesting part is not the growth. It is what SES and Hispasat did to wall off their own exposure before signing.
348
Satellites in the expanded IRIS² constellation, 330 LEO and 18 MEO, announced 7 August 2026
€15.6B
Estimated programme cost at Rendezvous 1, against €10.55 billion at the December 2024 concession
+48%
Cost growth in twenty months, before the first production satellite has been built
2029
Target for first launches under the implementation agreement
The European Commission and the SpaceRISE consortium, led by SES, Eutelsat and Hispasat, concluded the Rendezvous 1 negotiation on IRIS² on 6 August and announced it on Friday the 7th, signing the implementation agreement that moves Europe’s sovereign constellation from planning into full-scale deployment. The constellation grows to 348 satellites, 330 in low Earth orbit (LEO) and 18 in medium Earth orbit (MEO), at an estimated cost of €15.6 billion. First launches are targeted for 2029.
Twenty months ago, at the December 2024 concession signing, the same programme was 290 satellites and €10.55 billion.
What did Rendezvous 1 actually change?
The constellation grew a fifth. The bill grew half. And the two commercial operators with the most to lose put hard ceilings on their own money before signing. SES capped its contribution at €1.35 billion, tied to the 18 MEO satellites, with roughly ninety percent of that MEO capacity remaining commercially exploitable by SES. Hispasat capped its commitment at €600 million. Both numbers came out in the operators’ own releases on signing day, which tells you who the message was for.
SES went further and said the quiet part to its investors: its 2026 IRIS² spending already sits inside existing capex guidance, and no future exceptional cash proceeds will be diverted into the programme. That is not the language of a partner expecting the estimate to hold.
Wire coverage on Friday reported the bigger constellation and moved on. The number that deserves the attention is the cost growth, because it arrived before construction, which is when programmes are still supposed to be honest. What follows works through where the €5 billion went, why the operators’ caps change who carries overrun risk, what Eutelsat’s results the same day say about the LEO business underneath the sovereignty story, and the rest of a week that also included SpaceX naming the customers it intends to take and a new FCC docket that widens the direct-to-device (D2D) field.
The remaining seven sections are for paid members.
The full deep dive works through the programme economics, the operator caps, Eutelsat’s numbers, the Starlink Mobile calendar, the new FCC docket, and what Thursday’s Telesat call is actually for. Members get every deep dive, the full archive as it opens, and the weekly intelligence that sits behind the headline numbers.
- 02What Brussels actually bought
- 03Eutelsat’s €297 million line
- 04Starlink Mobile’s 2027 problem
- 05The FCC’s unlicensed D2D front
- 06Telesat on Thursday
- 07Also this week
- 08Method and sourcing
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