Sustainability & Climate Consulting
Senior carbon, climate change and sustainability reporting advice, built to cost you less than you spend today.
Grey Epoch Consulting brings senior sustainability and climate advice to shipping, aviation, energy and industrial companies, backed by a leading carbon market firm. We help you move from audit-ready data to managing what carbon costs you.
Carbon has a price. Now it needs a plan.
Trading schemes and border measures put a price on emissions. CSRD/ESRS, IFRS S1–S2, UK SRS and TSRS make climate performance public and auditable. Customers, lenders and investors use that information to decide who they buy from, lend to and invest in.
Financial
Rising carbon costs, margin pressure and potentially higher financing costs where transition plans fall short.
Reputational
Unverifiable or inconsistent climate claims attract scrutiny from regulators, investors and customers.
Operational
Data gaps, customer requests and new reporting cycles strain teams, systems and controls.
Grey Epoch brings together carbon, sustainability and climate expertise to help businesses navigate these challenges, set priorities and take practical action.
We’ll be at COP31
Antalya, Türkiye | 9–20 Nov
Our consulting services
We work with businesses to address immediate regulatory requirements while building the data, governance and strategic capabilities needed for longer-term sustainability management.
Grey Epoch Consulting does not give investment advice
CBAM & Carbon Cost Readiness
Assessing CBAM exposure, embedded-emissions data requirements and potential carbon costs, and supporting responses to customers and importers.
Sustainability Reporting
Supporting readiness for IFRS S1–S2, CSRD/ESRS, UK SRS and TSRS, including reporting, data, governance and internal controls.
Climate Risk & Transition Strategy
Assessing physical and transition risks, scenario analysis and developing transition roadmaps linked to business strategy and investment.
ESG Data & Value-Chain Requests
Establishing Scope 1–3 emissions baselines, improving data ownership and responding to customer, bank and investor information requests.
Carbon data, cost and action, connected.
Our team pairs senior sustainability, reporting and assurance expertise with people who understand how carbon markets work in practice.
We build emissions data that verifiers and auditors accept, and we work out what your exposure costs at current market levels, so you know what compliance means for your budget.
You measure once and use the data for compliance, reporting and procurement. IFRS S2, for example, asks how you plan to use carbon credits; we can answer both the disclosure and the procurement question.
Not sure where to start? A Carbon Check-up maps your exposure in 30 minutes.
Eren is a senior sustainability consultant and auditor with over 15 years of experience advising boards, global organisations and investors across the UK, EU, Türkiye and internationally.
His previous roles include EY UK and Türkiye, the United Nations Development Programme (UNDP), local government, ministries, NGOs and engineering firms.
At Grey Epoch, Eren personally leads every consulting engagement, bringing together deep sustainability and audit experience, international perspective and practical, independent advice.
Eren Özden
Head of Sustainability & Climate Consulting
Why Choose Us?
Already working with climate, reporting or carbon consultants? We can review what you’re currently receiving and show where the same budget could go further.
Senior-led from start to finish.
Every engagement is led and delivered by our Head of Sustainability & Climate Consulting, so your work is never handed to a junior team.
Big Four standards, without the overhead.
Audit-ready work shaped by Big Four assurance experience, without the layers of a large firm.
Grounded in the carbon market.
Our advice draws on Grey Epoch’s day-to-day experience in carbon markets, so cost estimates reflect current market conditions.
Measure once, use three times.
One well-structured dataset can support compliance, reporting and carbon procurement, reducing duplicated work.
Clear scope and fee, agreed upfront.
You know what we will deliver and what it will cost before any work begins.
Not sure where you stand? Start with a complimentary Carbon Check-up.
A short call to map your carbon, reporting and cost exposure, and where value may be missing.
In a 30-minute call, we review your exposure to CBAM, the EU and UK ETS, and the reporting standards that apply to you. We also look at your current climate, reporting and carbon consultancy spend. You then receive a two-page summary of your key exposures, an indicative carbon cost range and where your spend could be better targeted.
For shipping, aviation, energy and industrial companies. Indicative only, based on public information and data you provide; not formal advice.
Where your Check-up may find value
Stay compliant
Emissions data that stands up to verification for CBAM and the ETS, and Guarantees of Origin to support Scope 2 reporting.
Manage risk
A plan for allowance and certificate purchases, made well ahead of compliance deadlines.
Control costs
Verified actual emissions in place of default values, possible credit for carbon prices already paid, and one agreed consultancy scope.
Gain an edge
Surpluses you may be able to bank, pool or sell, funding you may qualify for, and data customers and lenders can trust.
Already know what you need?
Tell us your priorities and we’ll prepare a proposal with a fixed scope and fee, from a full carbon and reporting diagnostic to support on a single issue.
Enquire
Stay connected
Insights from COP31 and the carbon markets, straight to your inbox.
Get our briefings on what is changing across the EU and UK ETS, CBAM, ISSB/TSRS and CSRD, starting with what we hear in Antalya.
+44 20 7038 7691
info@greyepoch.com
Mortimer House, 37 - 41 Mortimer Street, London, W1T 3JH
© Grey Epoch. All Rights Reserved 2025
+44 20 7038 7691
info@greyepoch.com
Mortimer House, 37 - 41 Mortimer Street, London, W1T 3JH
© Grey Epoch. All Rights Reserved 2025
