Neither a Big 4 deck factory nor a generic SaaS vendor.
CAS is a senior carbon-market practice that ships its own software. We're chosen when the work has to be both strategically defensible and technically delivered — registries, MRV, Article 6, ESG disclosure and VVB readiness — without handing off between three vendors.
Four things that make CAS different.
Independent by design
CAS does not resell registry licences, certify projects we advise on, or take equity in clients' projects. Our methodology choices are driven by integrity, not commercial alignment.
Built, not just briefed
We ship working software — registry, MRV, GHG calculator, AI PDD generator. Strategy decks are backed by code that proves the architecture works at sovereign scale.
Sovereign and enterprise on one stack
The same compliance, registry and MRV primitives that serve corporate ESG teams scale to national frameworks. You don't pay for the gap between consultancy and platform.
Senior practitioners only
Engagements are led by carbon-market practitioners with 10+ years on registries, Article 6, ISO 14064 and VVB work. No pyramid of juniors learning on your budget.
How CAS compares across the carbon stack.
| Capability | CAS | Big 4 | Boutique advisory | Software vendor |
|---|---|---|---|---|
| Carbon software & registry build | ||||
| Article 6.2 / 6.4 implementation | ||||
| Sovereign DNA & national framework | ||||
| MRV (satellite + IoT + ground) | ||||
| ISO 14064 / 14065 / VVB readiness | ||||
| CSRD / ESRS E1 / IFRS S2 disclosure | ||||
| PDD authoring (VCS / Gold Standard / A6.4) | ||||
| Senior practitioner lead, not junior team | ||||
| Transparent engagement bands | ||||
| Fixed-fee scoped phases | ||||
| Owns its own SaaS stack (no licence resale) | ||||
| Independent of any single registry / standard |
Best fit.
- You need strategy AND working software, not a 200-page report.
- Your programme touches Article 6, registries, MRV or VVB.
- You want a senior practitioner on every call.
- You need disclosure that survives external assurance.
- You want fixed-fee, scoped phases — not open-ended retainer.
- You want a generic "net-zero" deck with no implementation.
- You need pure-play financial audit (use your statutory auditor).
- You want a free SaaS trial with no advisory wrap.
- You're seeking project equity / co-investment — we stay independent.
Twenty minutes. No pitch deck.
A discovery call to scope your problem and tell you honestly whether CAS is the right fit.