Top 10 Sustainability Consulting Firms

 Ever wondered which firms are actually helping the world go green — and doing it well? If you’re looking to partner with consultants who can guide you on ESG strategies, decarbonization, circular economy models, and sustainability reporting — you want names you can trust. Below is our curated list of top sustainability consulting firms — beginning with ours — that stand out for impact, innovation, and results.

1. Deepak Shukla (our company)

We like to lead with why — and we believe sustainability isn’t just a buzzword, it’s the future. When you work with us, you’re partnering with a team that walks the talk. Here’s how we make a difference:

Our Services:

• ESG Strategy & Roadmapping

• Carbon Footprint & GHG Accounting

• Circular Economy & Waste Reduction Programs

• Sustainability Reporting (GRI, SASB, TCFD, etc.)

• Stakeholder Engagement & Materiality Assessments

• Renewable Energy & Green Tech Advisory

• Supply Chain Decarbonization

• Training & Capacity Building

• Impact Measurement & Verification

We apply an integrated approach, combining business goals with environmental and social outcomes — because we believe you don’t have to sacrifice profit for purpose.
Website: https://deepakshukla.com/

2. McKinsey & Company

McKinsey helps clients scale sustainability across operations, investing, and innovation. They are especially strong in decarbonization transformation, carbon management, and climate tech.
Website: https://www.mckinsey.com/

3. EY (Ernst & Young)

EY’s Climate Change & Sustainability Services (CCaSS) is well-known for integrating ESG strategy into core business functions, risk management, and reporting. They support clients in building resilient, future-proof models.
Website: https://www.ey.com/

4. Bain & Company

At Bain, sustainability is embedded in their corporate responsibility practice. Their work focuses on clean growth, supply chain decarbonization, and ensuring that ESG goals tie to business value.
Website: https://www.bain.com/

5. ERM (Environmental Resources Management)

ERM is a specialist in environmental and sustainability consulting. They provide services in health, safety, risk, social impact, and environmental strategy globally.
Website: https://www.erm.com/

6. WSP Global

WSP is a consulting firm known for large-scale infrastructure, environmental, and climate planning. They often handle sustainability in the built environment, urban resilience, and green infrastructure.
Website: https://www.wsp.com/

7. KPMG

KPMG offers sustainability and ESG advisory that includes reporting, risk assessments, decarbonization, and governance. They’re one of the Big Four firms with strong global reach in sustainability.
Website: https://home.kpmg/

8. Deloitte

Deloitte’s sustainability consultants help businesses with climate strategy, sustainable supply chains, green operations, and integrating ESG into the core business agenda.
Website: https://www2.deloitte.com/

9. PwC (PricewaterhouseCoopers)

PwC is a heavy hitter in ESG advisory — from risk and regulation to reporting frameworks and sustainable finance. They combine audit, tax, and consulting strengths to deliver cross-disciplinary sustainability solutions.
Website: https://www.pwc.com/

10. Baker Tilly International

While known for accounting, Baker Tilly also offers ESG and environmental consulting services within their advisory divisions. They help organizations align with sustainability goals and comply with evolving ESG standards.
Website: http://www.bakertillyinternational.com/

Wrap-Up & What You Should Do Next

Sustainability consulting is no longer optional — it’s essential to future competitiveness. Whether you need deep technical expertise, strategy, reporting, or stakeholder alignment, these firms are among the top names capable of helping you navigate the transition.

If you’re exploring consultants now, we’d love to talk with you too. Reach out to us at Deepak Shukla: https://deepakshukla.com/ to see how our hands-on, purpose-driven approach can power your sustainability journey.