CARBON & IMPACT
The data earned us the compliance market.
Most cookstove projects sell voluntary credits based on survey estimates. ACE sells Article 6 compliance credits backed by measured stove usage.
Fifteen years of operations. 100,000+ units deployed. Connected microprocessors in every ACE One since 2019, logging each cooking session.
Fan runtime · last 24 hours
2.4 hrs
Cooking today
3
Sessions
0.98 kg
CO₂ avoided
15+
Years of operations
100,000+
Units deployed
5
Countries
Article 6
Compliance carbon programme
THE MRV PIPELINE
From device to verified credit.
Every credit ACE issues passes through this stack. No estimates, no surveys - every stove, every cooking session, every month.
01
Device
ACE One
02
App sync
ACE Connect
03
Ingest
Salesforce
04
Warehouse
BigQuery
05
Field test
KPT
06
Audit
VVB
07
Credit
ITMO
ARTICLE 6 OF THE PARIS AGREEMENT
Sovereign-grade carbon, because the data holds up.
Article 6 is the Paris Agreement mechanism that enables sovereign-level transfer of verified emission reductions between countries. It is how compliance buyers meet legally binding climate obligations.
ACE's carbon programmes sit in this market - not because we talked our way in, but because our device-level monitoring produces the kind of data compliance buyers can underwrite.
CARBON INTEGRITY
Five rules we don't break.
Clean cooking carbon has a credibility problem. We built our programme around not repeating the sector's mistakes.
01
Device-level monitoring
Usage recorded for each individual stove, not estimated from samples or surveys.
02
Conservative accounting
Leakage deductions, precision discounts, and statistical validation applied to all calculations.
03
No data, no credit
If usage data is missing for a stove during a monitoring period, no emission reductions are claimed.
04
Independent verification
All emission reductions validated and verified by accredited third-party bodies.
05
Rigorous field testing
Quarterly Kitchen Performance Tests at 95% confidence / 5% precision - more rigorous than typical cookstove projects.
BEYOND THE CREDIT
Carbon pays the bill. Dignity is the point.
Every stove ACE puts in the field produces a verified credit. It also returns clean air to the kitchen, hours to a woman’s day, standing trees to the landscape, and cash that was quietly leaking out of the household. Four outcomes the carbon number alone doesn’t capture, and the reason ACE exists.
3.2M
premature deaths each year
HEALTH
Household air pollution from cooking smoke is one of the largest environmental health risks in the world (WHO). Independent field assessment classified the ACE stove as “very cost-effective” at averting disability-adjusted life years, which is WHO’s benchmark for high-impact health interventions.
Source: WHO; Berkeley Air Monitoring Group / SNV, Cambodia.
~1 day
per week, reclaimed
TIME
In rural markets like Lesotho, households typically spend around three hours a day, roughly one full day every week, gathering firewood. The work falls disproportionately on women and girls. A cleaner stove gives that day back. ACE Connect’s in-app fuel shop exists for the same reason: so energy isn’t a chore.
Source: ACE operational observations, rural Lesotho.
>half
less wood burned
FORESTS
On paper, regrown biomass is “renewable.” On the landscape, the standing tree is gone. Independent field studies of ACE stoves show household wood use cut by well over half, which means more trees left standing around the village, not felled and counted as carbon-neutral.
Source: Berkeley Air Monitoring Group / SNV, Cambodia.
25–50%
of income spent on energy
COST
In rural markets where ACE operates, many households spend upwards of a quarter of their income on energy, sometimes as much as half. Kerosene for lighting, candles, paying shops to charge a phone, disposable batteries, firewood or charcoal burned at a fraction of the achievable efficiency. It is expensive to be poor. One ACE One collapses most of that stack into a single device.
Source: ACE operational observations, rural Lesotho.
OUR JOURNEY
15 years, one through-line.
From a single factory in Lesotho to a compliance-grade carbon programme across five countries.
ACE founded in Lesotho by Stephen Walker and Ruben Walker
First manufacturing facility opens in Ha Thetsane, Maseru
ACE One launched as ACE's own product
Operations begin in Cambodia and Uganda
Digital monitoring systems and ACE Connect development begins
Cambodia factory opens in Siem Reap
Ruben Walker named EY Impact Entrepreneur of the Year
Uganda factory opens in Gulu
Operational restructuring. ACE Energy Holdings BV established. Kenya factory opens in Mombasa-Kwale. 100,000+ units deployed.
Senegal operations launch. Article 6 compliance carbon programme active with sovereign buyer.
Buying carbon? Let's talk.
For compliance buyers, DFIs, and sovereign programmes.