The technology

Solid-sorbent direct air capture, measured molecule by molecule

A continuous, electrified capture cycle designed for durability of storage and defensibility of data. This is the full engineering picture — no black boxes.

Renewable-powered Terravault facility
Clean-energy powered · Facility 04, Pilbara
Process schematic

The capture cycle, end to end

01
Air intake
Ambient air drawn through contactor arrays at ~415 ppm CO₂.
→
02
Sorbent binding
Amine-functionalized sorbent chemically binds CO₂ at the surface.
→
03
Thermal release
Waste heat at 95°C regenerates sorbent, freeing concentrated CO₂.
→
04
Compression
Stream dried and compressed to 150 bar for pipeline transport.
→
05
Mineralization
Injected into basalt; carbonates within 24 months. Permanent.
Energy & mass balance

What it takes to remove one ton

Per verified ton of CO₂ permanently stored, measured across the full facility boundary.

Energy inputs / ton
Thermal (waste heat)1,450 kWh
Electrical (fans, pumps)280 kWh
Compression & injection120 kWh
Net energy / ton1,850 kWh
Carbon accounting / ton
Gross CO₂ captured1.000 t
Grid & process emissions− 0.11 t
Transport & injection− 0.02 t
Net durable removal0.87 t
Net removal ratio of 0.87 verified under the Isometric DAC + Storage protocol. Emissions boundary includes upstream energy generation.
Performance

Cost is falling as the fleet scales

Cost per ton, $ · by facility generation
2021 → 2026
$0
Gen 1
$0
Gen 2
$0
Gen 3
$0
Gen 4 · target
0%
Cost reduction Gen 1 → Gen 3
2.1×
Throughput per module vs Gen 1
< 2 yr
Mineralization to permanence
Instrumented pipework
Instrumentation
Every vessel and valve is a measurement point.
Facility specification

Gen 3 module, at a glance

Nameplate capacity1,000 t CO₂ / yr
Footprint per module140 m²
Sorbent typeAmine-functionalized solid
Regeneration temp.95 °C
Energy sourceGeothermal + solar PPA
Storage mediumBasalt mineralization
Cycle time3.5 hours
ModularityStackable to 50 MW blocks
MRV methodology

Every ton is measured, reported, and verified — not modeled

CO₂ flow is metered continuously at capture and injection. Third-party auditors reconcile the two, subtract lifecycle emissions, and issue credits only against net durable removal.

✓Continuous flow metering at both capture and injection points
✓Independent lifecycle assessment across the full facility boundary
✓Seismic and geochemical monitoring of injection reservoirs
Certifications & standards
IsometricCertified
Puro.earth CO₂ RemovalCertified
45Q tax credit eligibleQualified
ISO 14064-2 GHGConformant

Want the full methodology?

Our complete MRV protocol, sensor calibration logs, and reservoir monitoring data are available to evaluators under NDA.

Request the data room