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