american carbon registry

What american carbon registry does

American Carbon Registry (ACR), founded in 1996 as the world's first private greenhouse gas registry, is a nonprofit enterprise of Winrock International headquartered in Little Rock, Arkansas. ACR operates a transparent serialized registry (transitioning to ICE's GreenTrace platform in early 2026) and develops science-based methodologies for project registration, independent third-party verification, and credit issuance across both voluntary and compliance carbon markets. Its portfolio spans nature-based solutions (Improved Forest Management, Afforestation/Reforestation, wetlands, active forest conservation) and industrial solutions (ozone-depleting substance destruction, landfill gas, advanced refrigeration, orphaned oil and gas well plugging), supported by proprietary risk and baseline evaluation tools (ACR Risk Tool, Tool for Dynamic Evaluation of Baselines, Tool for Comparable Properties Analysis) and a diversified buffer pool covering approximately 20% of issued credits.

ACR's methodology approval process uniquely requires blind scientific peer review alongside internal and public consultation. The organization is approved by ICAO for CORSIA (all phases through 2029), California ARB, Washington State, Singapore's Carbon Pricing Act, and Colorado's methane program, and holds ICVCM Core Carbon Principles approval at both program and methodology levels. Cumulative outputs include 374M+ tons CO2e of issued credits across 875 projects covering 13.6M acres, with 2023 alone producing 37M+ credits (30% growth) and a 75% increase in retirements.

Revenue is generated through fee-based program services: registration, methodology approval, validation/verification oversight, and credit issuance. ACR does not sell carbon credits directly; credits transact between project developers and buyers through approved intermediary platforms (Climate Impact X, Patch.io, and others) or direct agreements. Customer segments include carbon project developers (primary direct customers), corporate voluntary buyers, and regulated compliance entities (airlines, industrial facilities). Go-to-market blends enterprise regulatory engagement with thought-leadership content marketing, including market reports, the Carbon Markets 101 educational series, and industry event participation.

Name

american carbon registry

Legal name

American Carbon Registry

Website

https://americancarbonregistry.org

Company type

Private

Founded year

1996

Operating status

Operating

Short description

American Carbon Registry (ACR) is a nonprofit carbon crediting program and registry, founded 1996, that issues serialized verified carbon credits through science-based methodologies for project developers, corporate buyers, and regulated compliance entities across voluntary and compliance markets.

Ownership category

akta.pro rank

Product category

Carbon Credit Registry Services

NAICS

Environmental Consulting Services (541620)

akta.pro primary industry

Carbon Registries & Issuance Platforms (Project/credit lifecycle, serials, issuance, retirement) (EUABAAAA)

akta.pro secondary industry

Credit Issuance, Serialisation & Retirement Assurance (Registry Integrity Checks) (EUABACAM)

Keywords

• Carbon credit registry
• Carbon crediting program
• Voluntary carbon markets
• Compliance carbon markets
• Greenhouse gas accounting

Headquarters

HQ city

Little Rock

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Others

Revenue model

1. Registry and Program Services: ACR operates as a nonprofit enterprise of Winrock International providing carbon crediting program services. Revenue is generated through program fees for project registration, methodology approval, and credit issuance services. ACR does not sell carbon credits directly; credits are transacted between project developers and buyers through marketplaces or direct agreements.

Go-to-market motion2 records

Distribution channels3 records

Marketing channels8 records

Core offering

American Carbon Registry (ACR) operates a carbon crediting program and registry for compliance and voluntary carbon markets. ACR develops science-based greenhouse gas accounting methodologies, registers emission reduction and removal projects, issues serialized carbon credits upon independent third-party verification, and tracks credit transfers, retirements, and cancellations through a transparent registry. ACR serves project developers, regulated entities, and corporate buyers, and is approved by ICAO, California ARB, Washington State, and Singapore.

Product overview

The American Carbon Registry (ACR) operates as a comprehensive carbon crediting program offering a unified platform that combines registry services, standards development, and validation/verification into a single integrated offering. The core product consists of the ACR Registry for tracking serialized carbon credits, the ACR Standard and Methodologies for science-based greenhouse gas accounting, and Validation and Verification services requiring independent third-party verification. The portfolio spans multiple methodologies including Improved Forest Management (IFM), Afforestation/Reforestation, Ozone Depleting Substances destruction, landfill gas destruction, and mine methane capture. ACR's ecosystem includes the Buffer Pool for reversal risk mitigation, Co-Benefits Certification for additional impact recognition, and access to ACR-Linked Platforms for credit trading. Operating as a nonprofit enterprise of Winrock International since 1996, ACR serves both voluntary and compliance carbon markets including California Cap-and-Trade, ICAO CORSIA, Washington State Cap-and-Invest, and Singapore's Carbon Pricing Act.

Differentiator

Problem solved

Functional benefit

Products and services

• ACR Registry Transparent online system for recording carbon project listings, issuance of serialized carbon credits upon verification, and tracking of credit transfers, retirements, or cancellations. Used by project developers, credit buyers, and verification bodies globally. The registry is transitioning to ICE's GreenTrace platform in early 2026.
• ACR Standard and Methodologies Science-based standards and methodologies for greenhouse gas accounting covering destruction of super pollutants, nature-based solutions, and carbon capture and storage. Includes rigorous approval process with internal review, public consultation, and blind scientific peer review. Used by project developers seeking methodology approval for carbon projects.
• Validation and Verification Services Independent third-party validation and verification of all GHG projects following the ACR Validation and Verification Standard, required for registration of carbon credits. Required for project developers seeking ACR credit issuance.
• Improved Forest Management (IFM) Methodology Methodology for carbon credit generation through improved forest management on non-federal U.S. forestlands, featuring project-specific dynamic baselines and harvest intensity constraints. Used by U.S. and Canadian forest project developers. Version 2.1 published with enhanced precision requirements.
• Co-Benefits Certification Certification program for co-benefits beyond carbon accounting, recognizing additional environmental and social impacts of carbon projects. Available to project developers seeking differentiated market positioning.
• ACR-Linked Platforms Directory List of approved intermediary platforms where ACR-issued carbon credits can be purchased, enabling access to voluntary carbon markets through verified third-party channels such as Climate Impact X and Patch.io.

Quantifiable outcome

• Companies using carbon credits decarbonize twice as fast (6% annually) compared to non-users (3% annually)
• +3 more outcomes

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Two partnerships are on record, tiered core.

• Intercontinental Exchange (ICE)coreTechnology or Integration · 1 January 2025ACR partnered with ICE as a launch partner for ICE's next-generation environmental registry technology platform. The ICE GreenTrace platform will provide best-in-class infrastructure to support carbon market growth and adoption. ACR's registry is transitioning to this platform in early 2026.
• Winrock InternationalcoreStrategic or Co-development PartnerACR is a nonprofit enterprise of Winrock International, operating as Winrock's carbon crediting program. Winrock provides organizational infrastructure, governance, and strategic direction for ACR's operations in global compliance and voluntary carbon markets.

Scale indicators11 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• Verra: Verra operates the Verified Carbon Standard (VCS), the world's largest voluntary carbon registry and ACR's primary direct competitor. Both organizations issue serialized carbon credits, compete for project developer registrations, and have methodologies with ICVCM CCP approval across similar project types.
• Gold Standard: Gold Standard is a Geneva-based carbon crediting program focused on sustainable development outcomes. It directly competes with ACR for project registrations in renewable energy, land use, and community-based projects and has ICVCM CCP-eligible methodologies.
• Climate Action Reserve: Climate Action Reserve is a North American carbon registry with deep California compliance market integration that overlaps with ACR's California Cap-and-Trade business. Both serve U.S. project developers issuing credits for voluntary and compliance buyers across similar project types.
• Puro.earth: Puro.earth is a carbon removal registry focused exclusively on engineered and nature-based removal methodologies (e.g., biochar, DAC, mineralization). It competes with ACR's removal-focused methodologies, particularly for buyers seeking high-integrity removal credits with CCP eligibility.
• Plan Vivo: Plan Vivo is a UK-based carbon registry specializing in community-led land-use and restoration projects. It directly competes with ACR in nature-based solutions and smallholder/community forestry methodologies serving similar developer and buyer segments.

Emerging players

• ART (Architecture for REDD+ Transactions): ART operates a jurisdictional REDD+ framework issuing TREES credits at scale for forest conservation programs. It is an emerging player competing with ACR's IFM and ARR methodologies in the high-volume forestry and nature-based segments.
• BioCarbon Registry: BioCarbon Registry is a newer emerging registry offering project registration and carbon credit issuance services. It overlaps with ACR in the broader registry business but has smaller scale and a narrower methodology portfolio.

Broad incumbents

• Xpansiv: Xpansiv operates CBL, a major environmental commodities exchange and data platform that lists carbon credits from multiple registries including ACR. It is a broad incumbent in the carbon market infrastructure stack, serving both ACR's developers/buyers and broader environmental commodity markets.

Others

• Sylvera: Sylvera is a carbon credit ratings and analytics provider that assesses the quality of credits issued by registries including ACR. It is an adjacent ecosystem participant whose ratings influence demand for ACR's CCP-approved methodologies and buyer selection criteria.
• Patch: Patch is a carbon credit marketplace and API platform listed among ACR's approved linked platforms. It is an adjacent ecosystem participant providing distribution channels for ACR-issued credits to corporate buyers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/americancarbonregistry

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about american carbon registry