Ensuring Integrity On The Path To Net Zero

Since 2005, TÜV SÜD (formerly Ruby Canyon Environmental) has helped organizations measure, manage, and validate their greenhouse gas (GHG) emissions as part of their journey toward sustainability and net zero. In December 2022, Ruby Canyon Environmental and Ruby Canyon Mexico were acquired by TÜV SÜD America, Inc. Now operating under the TÜV SÜD brand, the environmental team continues to deliver the same expertise and high-quality service clients have come to rely on.

Our Core Services: Carbon Market Access and GHG Assurance

We support clients across industries with end-to-end solutions for carbon reporting and emissions reduction, ensuring compliance and credibility in both voluntary and compliance carbon markets:

Carbon Footprint Assurance (Organizational & Product-Level)

We independently verify GHG inventories based on ISO 14064-1, ISO 14067, and the GHG Protocol. Our structured 5-phase approach (planning, audit, data review, report issuance, and certification) ensures transparency, traceability, and trust in reported emissions.

GHG Assurance Across Scopes 1, 2, and 3

Accurate reporting is critical. We deliver third-party GHG assurance to validate the completeness, consistency, and accuracy of emissions data in line with ISO 14064-3 and other leading standards. This builds stakeholder confidence and meets regulatory and investor expectations.

Carbon Offset Project Validation & Verification

We validate and verify carbon offset projects for voluntary and compliance markets, including methodologies under Verra, Gold Standard, ACR, CAR, and the UNFCCC. This ensures project integrity, additionality, and permanence — critical factors for carbon credit issuance and trading.

Facility-Level Emissions Verification

TÜV SÜD provides independent verification of site-level emissions as required by regulatory frameworks, including EU ETS, CBAM, and North American GHG programs. Our expertise ensures alignment with ISO 14064-3 and country-specific compliance schemes.

End-to-End Expertise in the Carbon Market

We operate across both voluntary and compliance carbon markets, offering assurance for initiatives such as:

Voluntary carbon market programs (e.g., VCS, Gold Standard, ACR, CAR)
Compliance programs (e.g., California Cap-and-Trade, Canada OBPS, Colombia ETS, EU ETS, CORSIA for aviation)

Our team supports projects at every stage — from initial validation to ongoing credit issuance — ensuring data integrity and environmental credibility in a rapidly evolving global carbon market.

International Accreditation

Integrity is paramount for our organization. We are ISO/IEC 17029:2019 accredited by two International Accreditation Forum bodies: ANSI National Accreditation Board (ANAB) and Entidad Mexicana de Acreditación (EMA), which allows us to provide assurance for environmental programs around the world.

Read the Press Release

Public Statements

When it comes to greenhouse gas emissions, TÜV SÜD America can provide clients with assurances services that can help them achieve their sustainability goals.

Zach Eyler

Vice President, Green Energy and Sustainability, TÜV SÜD

Why choose TUV SUD for GHG Assurance and Carbon Market Integrity?

Verified and Credible Results – Transparent and auditable data across carbon reporting initiatives
Compliance-Ready – Expertise aligned with both voluntary standards and national GHG regulations
Full Lifecycle Support – From carbon footprint calculation to offset validation and facility audits
Risk Mitigation – Reduce exposure to reputational, regulatory, and financial risks
Global Recognition – Accredited, standardized, and internationally accepted methodologies

Looking to strengthen your carbon strategy?
Partner with TÜV SÜD to ensure integrity, quality, and compliance inat every stage of your decarbonization journey.

FAQs on Carbon Market Access and GHG Assurance

What is the difference between voluntary and compliance carbon markets?

Voluntary carbon markets allow companies, organizations, and individuals to purchase carbon credits by choice to meet voluntary climate or ESG goals; they follow voluntary standards and registries and tend to focus on additional, verifiable emission reductions or removals. Compliance carbon markets are created by law or regulation (for example emissions trading systems) and require covered entities to surrender allowances or offsets to meet legally binding obligations; program rules, credit eligibility and enforcement are regulator-defined.
What types of carbon offset projects can TÜV SÜD America validate and verify?

TÜV SÜD America has validated and verified a wide range of project types for both voluntary and compliance programs, including: coal mine methane; landfill gas; wastewater; renewable energy; energy efficiency; fuel switching; oil & gas emissions reductions; composting; cropland; grasslands and rangeland management; livestock methane; N2O abatement at industrial plants; ozone‑depleting substances and HFC destruction; forestry projects (ARR, IFM, REDD+); and transportation projects.
Why is third-party verification of GHG emissions important?

To ensure integrity. Third‑party verification provides independent assurance that GHG inventories and reported emission reductions or removals are accurate, complete and consistent with relevant standards. It increases credibility with regulators, investors and customers, detects methodological or data errors, reduces the risk of greenwashing, and supports comparability and traceability of claims across programs and markets.
What accreditations does TÜV SÜD America hold?
TÜV SÜD America has numerous accreditations including:
- ISO/IEC 17029 and 14065 for validation and verification activities
- California Air Resources Board
- Oregon Department of Environmental Quality
- Washington State Department of Ecology
Which greenhouse gas (GHG) scopes does TÜV SÜD America verify?

TÜV SÜD America provides GHG assurance across Scope 1 (direct emissions from owned or controlled sources), Scope 2 (indirect emissions from purchased electricity/heat/cooling) and Scope 3 (other indirect emissions across the value chain) for voluntary and compliance programs.
Why is TÜV SÜD the perfect partner for this service?
TÜV SÜD is an ideal partner for greenhouse‑gas (GHG) assurance because it combines global technical expertise, recognized accreditations, long experience in carbon assurance work (previously as Ruby Canyon, and independence needed to meet both voluntary and compliance program requirements. We offer the following:
- Comprehensive service portfolio — Offers organization‑level GHG verification, project validation/verification, and facility‑level emissions assurance across Scopes 1, 2 and 3.
- Recognized accreditations and standards — Provides assurance aligned with ISO standards used for GHG work and operates under international accreditation frameworks for validation and verification activities.
- Deep market and sector experience — Has demonstrable experience in numerous industries, sectors and programs globally.
- Technical rigor and independence — Dedicated verification teams, highly-defined processes, and third‑party independence reduce risk of material misstatement and support client needs.