Sustainability consulting, and how to tell one consultancy from another
Every firm in this market sells the same nouns: strategy, roadmap, materiality, targets. What separates one engagement from the next is who does the work, how much of it is recycled from the last client, and whether anyone is still there when the plan meets an operation.
What a sustainability consultant does
A sustainability consultant helps a company manage its environmental, social and governance performance and meet the obligations that apply to it. The job is to move sustainability out of the register of pleasant intentions and attach it to targets and disclosures that survive a check.
It answers three questions together. Where do we stand? Current state, data maturity and the risks that apply. Where should we go? Priorities and targets, argued rather than copied from a peer. How do we get there? Roadmap and monitoring.
It is not the same thing as sustainability reporting. A report is one output, the visible one, and without the prioritisation and monitoring around it a report repeats itself year after year. The three ESG dimensions produce three documents when handled separately, and decisions when handled as one system.
What the work covers
Sustainability consulting is a family of services rather than one. Start with a single component and widen the scope as the organisation matures. Ours breaks down as follows.
- Current state and gap analysis. What exists, what is required, and the gap between them.
- Prioritisation. A materiality assessment, double where the ESRS apply, so the strategy covers what matters rather than everything.
- Policy and management systems. The policy set, the plans, the governance that owns them and the training that makes them work.
- Targets and monitoring. Targets with owners and dates, and a review that updates the plan rather than files it.
- Reporting. ESRS, IFRS S1 and S2, GRI, and TSRS for a subsidiary in Türkiye, through to assurance readiness.
- Environmental and social work. Due diligence, impact assessment, action plans, biodiversity, supply chain and human rights, under IFC, EBRD, AIIB and Equator Principles standards.
- Community investment and gender equality programmes. Impact measured rather than counted.
- Design, training and communication. Report design, data visualisation, translation and the training without which a policy set stays on a server unread.
Carbon footprint accounting, CDP and EcoVadis submissions and sustainability governance sit inside this scope too. Where the value chain reaches Türkiye, see our CBAM guide and TSRS guide.
When you need a consultant, and when you do not
Four situations make the case on their own.
- You are in scope of a reporting obligation. Our CSRD and ESRS guide sets out who still is after Omnibus I.
- Your customers want value chain data. An EU buyer needs your numbers for its own disclosures, and increasingly makes them a condition of the next order.
- You are being scored by a platform. EcoVadis ratings and CDP supply chain programmes have made sustainability evidence a precondition of the sale.
- You are using development finance. IFC, EBRD, AIIB and Equator Principles lenders attach conditions tested after drawdown, not before.
The other direction matters too, because an adviser who cannot say it is selling rather than advising. If the ask is one buyer questionnaire, answer it. If the shortfall is hours rather than expertise, buy hours. If the obligation is years out, buy the data routine, not a strategy document.
How an engagement runs
Consulting looks shapeless from outside. Set up properly it moves through six steps, each with an output.
- Current state analysis Maturity, existing practice, the obligations that bite and the state of the data. Output: a gap analysis.
- Prioritisation Stakeholder expectations and business impact narrow the field. Output: a priority matrix.
- Strategy and roadmap Targets, indicators and a twelve to thirty-six month calendar. Output: the roadmap.
- Implementation support Policies, plans, training and projects put into operation, with your teams strengthened rather than bypassed. Output: a policy set and projects running.
- Reporting Performance disclosed under the standard that applies. Output: the sustainability report.
- Monitoring and improvement Progress tracked, the strategy revised on what it shows. Output: a periodic review.
No company needs all six at once. A consultant who cannot tell you in the first conversation where you should start is guessing at your expense.
What drives the cost
There is no list price, because scope varies more between companies than anything else. Five factors set it.
- Scope of service. A single policy set is different work from strategy, implementation and reporting together.
- Size and number of sites. Every entity added to a consolidated boundary adds collection and verification effort.
- Data maturity. A company already metering energy and calculating emissions starts months ahead of one that is not.
- Technical analysis. A carbon footprint, a double materiality assessment or scenario analysis each need specialist input.
- Assurance. If assurance is planned, preparing for it is part of the budget.
A single output takes a few weeks; end-to-end strategy and implementation runs from a few months to a year. Once the scope is settled we quote a fixed price against a fixed schedule, itemised, the same day as the scoping call. The expensive outcome is rarely the fee, but a process scoped wrongly and abandoned half-finished, then paid for twice.
How to choose a consultant
This is a multi-year commitment, and the wrong choice costs budget and credibility at once. Six questions separate consultancies faster than a credentials deck.
- Who actually does the work? Ask for the names and how their time is split. The common failure here is a senior team that wins the work and a junior team that delivers it.
- Do they know the standard, or a summary of it? Applied command of GRI, the ESRS and the ISSB standards shows up in what they ask about your reporting boundary.
- Will they argue with you? An adviser who accepts every claim you would like to make is a greenwashing risk, not a safeguard against one.
- Do they stay past the strategy? Implementation and reporting are where engagements are quietly dropped.
- Will they commit to outputs, dates and an itemised price? "Advisory support" is not a deliverable. A scope priced line by line tells you it was understood before it was quoted.
- Will they hand the work back? With an in-house team the efficient arrangement is hybrid, and an engagement that has to be repeated identically next year was not finished.
Why Etki Fabrikası
We are four senior consultants and our project teams, with more than twenty years of advisory experience across banking, mining, energy, food and retail. In five years we have worked with over forty corporate brands on more than ninety projects, and since 2021 we have prepared the first sustainability report for fifteen companies.
Three things follow from being that size. The people you meet do the work, so nothing is handed down to a junior team once the contract is signed. Our fees are a long way below what the large firms charge for the same deliverable. And where your value chain reaches Türkiye, we go to the site and speak to the workforce rather than send a questionnaire.
Two engagements show the range: a programme at the Muratdere mining project in Bilecik reaching from a biodiversity action plan to community development, and a sustainable fashion entrepreneurship hub for Derimod that moved sustainability into the business model. Both are among our case studies.
Frequently asked questions
What does a sustainability consultant actually do?
Three things, in order: establish where the company stands against the obligations and buyer demands that apply to it; work out which environmental, social and governance topics matter enough to commit to; then turn that into policies, targets, owners and a measurement routine. A consultant who stops after the first two has sold a document.
Is sustainability consulting the same as sustainability reporting?
No. A report is one output of the work, the visible one. Consulting also covers strategy, prioritisation, policy, target setting, implementation and monitoring. A service that only writes reports is how a company ends up publishing the same numbers three years running.
How is the fee for sustainability consulting set?
By scope: how much of the service family you need, how many sites sit in the boundary, how mature your data is, which technical analyses are required, and whether assurance is planned. A quote given before the scope is known is a guess or an invoice waiting to grow.
We already have a sustainability team. Do we still need a consultant?
Usually as a complement rather than a replacement. The team holds the institutional knowledge and the continuity; a consultant brings current command of the standards, benchmarks from other companies and capacity that flexes. The efficient model is hybrid.