Pressure · 01
EU ETS
100 % application from 2027. Allowance price trending up. Every ton of CO₂ emitted on intra-EU voyages is a direct cost line.
Products · Built by willbö
Two bets. One engineering DNA.
willbö is an engineering company. Our services business ships vessels and industrial plants. Two of those engagements matured into products we now own, extend and offer to the market: CAPCO2, a carbon-capture system for commercial shipping, and holö, the digital platform we use internally to run every marine project.
Product 01 · Onboard carbon capture
AiP handover · Bureau Veritas
Pilot · Port of Vigo · Oct 2025
Pilot · Port of Vigo · Oct 2025
TRL 7
Validated in relevant environment
AiP
Bureau Veritas · concept · detail · onboard
42 kg/h
Net capture · pilot Oct 2025
−44%
GHG intensity · 25 000 DWT reference
The problem
Three regulations. One €8 M exposure per vessel.
A European shipowner running EU-fixed routes today faces three simultaneous, escalating pressures. For a single 25 000 DWT reference vessel, the combined 2025–2040 exposure is around €8 million in ETS, FuelEU and avoidable penalties. Available alternatives — new fuels, full retrofit — are expensive, slow, or incompatible with the remaining useful life of the ship.
Pressure · 02
FuelEU Maritime
Reg. 2023/1805. GHG-intensity penalties scaling to 2040. Active vessels pay today — not in some future regulatory horizon.
Pressure · 03
CII · IMO MEPC
Operational rating that degrades residual value and charter-market employability of the ship. A bad CII rating is a financial event.
The insight
Other OCCS burn more fuel to regenerate on board. CAPCO2 moves it on shore.
An onboard MEA system that regenerates on board burns roughly €205 000/year of extra HFO on a reference vessel. Those regeneration emissions are then attributed to the same vessel, eroding the regulatory benefit — the owner's net capture is less than the gross.
CAPCO2 cuts the problem at the root: regeneration heat comes from an industrial waste-heat source at the port, outside the owner's emissions perimeter. The MEA travels; the carbon doesn't.
For the shipowner, net capture equals gross. For the port, it's a new decarbonisation service. For the industrial partner, it's revenue on heat they were already venting.
Metric
Onboard regen
CAPCO2
Extra HFO/year
€205 000
€0
Regen emissions
On owner
Off owner
Net / gross ratio
< 1
1.00
Heat source
Engine / boiler
Industrial waste
How it works
An open cycle. Between ship and shore.
Step · 01
Absorption at sea
During navigation, main-engine exhaust passes through an onboard absorption column. A 30 % w/w aqueous MEA solution chemically fixes the CO₂.
- Main engine exhaust
- 30 % w/w MEA solution
- Chemical absorption
Step · 02
Storage on board
CO₂-rich MEA is stored in onboard tanks. The vessel carries a working inventory sized for the round-trip between regeneration calls.
- Rich-MEA tank
- 850 m³ solution · reference
- Continuous MRV logging
Step · 03
Port-side regeneration
Rich MEA is discharged to a port-side regeneration skid fed with industrial waste heat. Pure CO₂ is separated and delivered at the discharge interface.
- Custody-transfer kit
- Industrial waste heat
- Pure CO₂ out
Step · 04
Return & reuse
Regenerated MEA returns to the vessel for a new cycle. CO₂ continues downstream — storage, utilisation or transport — managed by third parties.
- Lean MEA back on board
- Cycle repeats
- Downstream = third parties
Business boundary
willbö delivers pure CO₂ at the discharge interface. Downstream management of that CO₂ — geological storage, industrial utilisation, transport — is a separate market, served by third parties. That boundary is deliberate: it keeps CAPCO2 commercially replicable at every European port.
October 2025 · Port of Vigo
The pilot ran. Stable, reproducible, class-witnessed.
Under the PERTE Naval framework, willbö executed a batch absorption–regeneration pilot at the Port of Vigo. Bureau Veritas witnessed and certified the campaign. The rig operated stably and reproducibly — zero mechanical, hydraulic or thermal incident.
42 kg/h
Demonstrated net capture
5–7 %
Deviation vs ProSim Plus simulation
PERTE Naval
Port of Vigo
Bureau Veritas witnessed
Reference vessel · 25 000 DWT · 36 191 nm/year · 163 days at sea
Scaled to a real vessel, here is what the owner gets.
3 635 t/y
Gross CO₂ captured · per year
1 220 kg/h
Average capture rate
−44%
GHG intensity · 77.09 → 42.91 gCO₂e/MJ
1.00
Net / gross capture ratio
850 m³ onboard solution tank. Alternative onboard-regeneration systems deliver a net/gross ratio below 1. CAPCO2 is the only architecture today that reaches 1.00 for the owner.
Shipowner calculator · 90 seconds · no sign-up
What does waiting for 2027 cost you?
Pick your vessel type. Move the sliders for ETS price, capture rate and regulatory scenario. See your net benefit and payback window from 2027 to 2039 — in your own numbers.
⚡ Open the calculator →
Sample · 6.500 TEU feeder
2027–2039
Net benefit
€2.4M↑
Payback
6.3 yr
CO₂ captured
68%
EUA price€110/t
Capture rate68%
Public roadmap
2026 → 2030. From pilot to 5 % of the European niche.
2026
PORTS 4.0 · A1 start
- PORTS 4.0 resolution · H2 2026
- CAPCO2 Port-Ready A1 · TRL 7 demo + MRV campaign
- Horizon Europe CL5 submission — ZEWT + "New CO₂ Capture Technologies"
- Commercial talks with Spanish target shipowners
2027
TRL 9 & first commercial
- Port-Ready A2 · full validation + class dossier with DNV
- Port-Ready A3 · continuous operation, scale to TRL 9
- CEF Transport application — port CO₂ reception infrastructure
- Formal OCCS recognition under FuelEU Maritime (EC · end 2027)
- First commercial installation signed
2028 → 2030
Scale · 5 % niche
- Innovation Fund candidacy · maritime CCS eligibility
- Progressive rollout over the European target niche
- Addressable niche — 1 344–1 836 European vessels
- Penetration target — 5 %
Partners & ecosystem
PORTS 4.0 · Port-Ready consortium
Submitted 31 March 2026 to Puertos del Estado, with support from the port authorities of Algeciras (APBA) and Vigo (APV). Partners: willbö + SILECMAR + NEUWALME.
APBA · Algeciras
APV · Vigo
SILECMAR
NEUWALME
TECHCO2 · MRV layer (GAIN NEXOS)
MRV design layer funded through Galicia's NEXOS call. Partners: willbö + SILECMAR (Grupo ARBULU) + NEUWALME. Output: ETS/FuelEU-grade reporting protocol. Read the case study →
Bureau Veritas · AiP issued
·
DNV
·
EC · IMO MEPC
Helsinki Shipyard · SH Vega · construction support
Product 02 · Internal platform
holö.
The digital platform we use to run every marine engineering project.
holö is not a SaaS we sell. It's the internal workspace where willbö's engineers model, document, class-approve and hand off marine projects on a single surface — from concept through production. When you engage willbö for a marine project, you get holö as part of the delivery: shared review, revision-safe handoffs, and a class-ready documentation chain — no extra procurement.
What it does
One surface for the whole project
3D model, class documents, structural reports and production drawings — versioned, linked, and reviewed in context. Class-aware templates for Bureau Veritas, DNV, LR and RINA.
Why it matters to you
No email chains. No lost revisions.
As a client, you review engineering on the same surface where it's produced. Comments propagate. Handoffs between willbö's Vigo and India teams are scheduled and tracked, not improvised.
Proven on
Every vessel in our portfolio
Originated on the Evrima delivery at HJ Barreras (2021), matured on SH Vega at Helsinki Shipyard, stable core on the Juan Pablo II tuna seiner at Murueta. Every marine engagement since runs on it.
holö · deployed as engagement, not sold as licence
Why willbö builds products
Engineering companies should ship products too.
01 · From practice
Built on real projects.
CAPCO2 and holö were born inside live shipyard and industrial work. No lab prototypes, no slide decks. Every feature traces back to a real engineering constraint we hit ourselves.
02 · Class-aware
Designed for regulators.
We work daily with Bureau Veritas, DNV, LR and RINA. Our products speak that language natively — approvals aren't a bolt-on, they're the starting point.
03 · Ownership
IP is ours.
Vigo-based R&D. No licensing locks, no white-label. We control the roadmap, the data model and the commercial terms.
Origin · PERTE Naval · PP06
CAPCO2 was engineered inside a public R&D programme.
PP06 CAPCO2 #TECNAVAL2025 — a PERTE Naval programme co-led with SOERMAR and financed by NextGenerationEU. Three years of engineering turned into the Bureau Veritas-classed product you see on this page.
Willbö was one of the Galician SMEs that led participation in the PERTE.
See the full PERTE Naval story →One phone call
Call us. We'll tell you exactly what doing nothing costs.
"Call us and we'll tell you exactly how much it will cost to operate your ships under EU ETS and FuelEU between 2027 and 2040 if you do nothing — and you'll know whether installing OCCS at zero cost is or isn't the best financial decision your Board has to take this year."
Talk to the product team
Retrofit, newbuild, or a marine project using holö?
Commercial conversations on CAPCO2 deployment and marine engagements delivered through holö go through the same address as the rest of willbö.
willbo@willbo.es →R&D hub
Vigo · Spain
C/ Jacinto Benavente, 22 · planta 2, oficina 5
36202 Vigo · ES
36202 Vigo · ES