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Sustainability & ESG Consultants

Sustainability and ESG consultants help organizations measure emissions, set climate targets, meet reporting requirements and plan decarbonization and energy projects. This hub is for companies, data center operators and infrastructure teams looking for outside sustainability consulting services or ESG consulting services. Vendors are listed A–Z with no scores or rankings; see our methodology for how vendors are included.

By ClimateSort Research Team✓ Updated Methodology →
20 companies · A–Z · Ranked by verified data once availableCompare →
AS

Accenture Sustainability Services

accenture.com
Accenture’s sustainability services and strategies help businesses leverage sustainability as a competitive advantage for a new era of business. Company websiteFounded: Accenture name adopted in 2001 Public sourceSBTi: Near-term: Validated Targets; Long-term: Validated Targets; Net-zero: Validated Targets (SBTi entity: Accenture, parent company) Public sourceSource: www.accenture.com
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A

AECOM

aecom.com
AECOM is an American infrastructure consulting firm headquartered in Dallas, Texas, and listed on the New York Stock Exchange as ACM. Through its Sustainable Legacies offer it provides ESG advisory, net-zero and decarbonization planning, and climate resilience services. Its near-term, long-term and net-zero targets are validated by the Science Based Targets initiative. Compiled from public sourcesFounded: 1990 Public sourceSBTi: Near-term: Validated Targets; Long-term: Validated Targets; Net-zero: Validated Targets (SBTi entity: AECOM) Public sourceHQ: Dallas, Texas, USA Public sourceSource: aecom.com
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AG

Anthesis Group

anthesisgroup.com
Anthesis is a sustainability consulting firm founded in 2013 that advises corporates and investors on ESG, net zero, nature, sustainable products, sustainable finance and communications. It reports more than 1,500 experts in 44 offices across 23 countries. Its near-term, long-term and net-zero targets are validated by the Science Based Targets initiative. Compiled from public sourcesFounded: 2013 Company websiteSBTi: Near-term: Validated Targets; Long-term: Validated Targets; Net-zero: Validated Targets (SBTi entity: Anthesis Group) Public sourceSource: www.anthesisgroup.com
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A

Arup

arup.com
Arup is a London-headquartered, employee-owned firm of designers, engineers, planners and advisers, founded in 1946 by Sir Ove Arup. It employs about 17,000 people in more than 90 offices across 35 countries and works on buildings, energy, water and transport, including data centers. Its near-term, long-term and net-zero targets are validated by the Science Based Targets initiative. Compiled from public sourcesHQ: London, UK Public sourceFounded: 1946 Public sourceSBTi: Near-term: Validated Targets; Long-term: Validated Targets; Net-zero: Validated Targets (SBTi entity: Arup Group Ltd.) Public sourceSource: www.arup.com
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B

Baringa

baringa.com
Baringa is a London-headquartered management consulting partnership founded in 2000. It has more than 2,000 people across the UK, Europe, North America, Asia and Australia, and works heavily on energy and the energy transition. Its near-term, long-term and net-zero targets are validated by the Science Based Targets initiative. Compiled from public sourcesHQ: London, UK Company websiteFounded: 2000 Company websiteSBTi: Near-term: Validated Targets; Long-term: Validated Targets; Net-zero: Validated Targets (SBTi entity: Baringa Partners LLP) Public sourceSource: www.baringa.com
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BV

Bureau Veritas

bureauveritas.com
Bureau Veritas is a French testing, inspection and certification company founded in Antwerp in 1828. It has about 79,000 employees and more than 1,500 offices and laboratories in 140 countries, and reported $6.34 billion of revenue in 2024. It offers sustainability assurance and, through its AITrack platform, supply-chain carbon analytics. Compiled from public sourcesFounded: 1828 Public sourceSBTi: Near-term: Validated Targets (SBTi entity: BUREAU VERITAS) Public sourceSource: group.bureauveritas.com
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CT

Carbon Trust

carbontrust.com
We are global climate transition experts who deliver effective sector-wide and cross-sector solutions for our partners and the systems they operate in to accelerate the transition towards a prosperous, resilient, low carbon… Company websiteHQ: London, United Kingdom Public sourceFounded: 2001 Public sourceSBTi: Near-term: Validated Targets; Long-term: Validated Targets; Net-zero: Validated Targets (SBTi entity: The Carbon Trust) Public sourceSource: www.carbontrust.com
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C

ClimatePartner

climatepartner.com
ClimatePartner helps companies reach net zero with carbon accounting, reduction, and climate projects! Company websiteSBTi: Near-term: Validated Targets (SBTi entity: ClimatePartner GmbH) Public sourceHQ: Munich, Germany Company websiteFounded: 2006 Company websiteSource: www.climatepartner.com
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D

DNV

dnv.com
Driven by our purpose of safeguarding life, property and the environment, DNV enables organizations to advance the safety and sustainability of their business. Company websiteHQ: Oslo, Norway Company websiteSBTi: Near-term: Validated Targets; Net-zero: Commitment Removed (SBTi entity: DNV AS) Public sourceFounded: 1864 Public sourceSource: www.dnv.com
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E

EcoAct (part of Schneider Electric)

eco-act.com
From environmental compliance to net zero, SE Advisory Services Climate Consultancy and project developer provides a wide range of best-in-class sustainable solutions Company websiteSBTi: Not found in SBTi export (checked 2026-10-16) Public sourceSource: eco-act.com
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E

ERM

erm.com
ERM (Environmental Resources Management) is a London-headquartered sustainability consultancy that calls itself the world's largest advisory firm focused solely on sustainability. It has more than 8,000 people in over 140 offices across 40+ countries and territories. Its near-term, long-term and net-zero targets are validated by the Science Based Targets initiative. Compiled from public sourcesHQ: London, UK Public sourceFounded: 1987 (merger of ERL, 1971, and ERM, 1977) Public sourceSBTi: Near-term: Validated Targets; Long-term: Validated Targets; Net-zero: Validated Targets (SBTi entity: ERM Group) Public sourceSource: www.erm.com
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G

Guidehouse

guidehouse.com
Guidehouse is the only scaled advisory organization in the world to fully integrate commercial and public or government businesses within each of our industry segments because complex problems require both perspectives to address… Company websiteHQ: Tysons, United States Public sourceFounded: 2018 Public sourceSBTi: Near-term: Validated Targets (SBTi entity: Guidehouse, Inc.) Public sourceSource: guidehouse.com
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J

Jacobs

jacobs.com
We are a global professional services company delivering engineering, design, consulting and infrastructure solutions that solve complex challenges and create lasting impact. Company websiteSBTi: Near-term: Validated Targets; Long-term: Validated Targets; Net-zero: Validated Targets (SBTi entity: Jacobs) Public sourceHQ: Dallas, Texas, USA Public sourceSource: www.jacobs.com
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MM

Mott MacDonald

mottmac.com
Embracing complex challenges with a community of brilliant people, Mott MacDonald drives transformative client outcomes and succeeds together. Company websiteHQ: Croydon, United Kingdom Public sourceFounded: 1902 Public sourceSBTi: Near-term: Validated Targets; Long-term: Validated Targets; Net-zero: Validated Targets (SBTi entity: Mott MacDonald Group Limited) Public sourceSource: www.mottmac.com
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R

Ramboll

ramboll.com
Ramboll is a Danish engineering, architecture and consultancy company founded in 1945, headquartered in Copenhagen and owned by the Ramboll Foundation. It has more than 18,000 experts and offices in over 35 countries, working for governments and companies on buildings, transport, energy, environment and health, water, management consulting and architecture. Its near-term, long-term and net-zero targets are validated by the Science Based Targets initiative. Compiled from public sourcesHQ: Copenhagen, Denmark Public sourceFounded: 1945 Public sourceSBTi: Near-term: Validated Targets; Long-term: Validated Targets; Net-zero: Validated Targets (SBTi entity: Ramboll Group A/S) Public sourceSource: www.ramboll.com
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R

Ricardo

ricardo.com
Ricardo is a global automotive engineering and manufacturing consultancy Company websiteFounded: 1915 Company websiteSBTi: Near-term: Validated Targets; Net-zero: Commitment Removed (SBTi entity: Ricardo PLC) Public sourceHQ: United Kingdom Public sourceSource: www.ricardo.com
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SP

South Pole

southpole.com
South Pole is a Zurich-based climate consultancy and carbon project developer founded in 2006 by graduates of ETH Zurich. It helps companies build and deliver net-zero strategies, prepare audit-ready climate disclosures and access carbon and renewable energy markets. It has more than 500 experts in over 20 countries, and its near-term, long-term and net-zero targets are SBTi-validated. Compiled from public sourcesHQ: Zurich, Switzerland Public sourceFounded: 2006 Company websiteSBTi: Near-term: Validated Targets; Long-term: Validated Targets; Net-zero: Validated Targets (SBTi entity: South Pole) Public sourceSource: www.southpole.com
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S

Stantec

stantec.com
Stantec is a multinational design and consulting firm founded in 1954 in Edmonton, Alberta, Canada, as D. R. Stanley Associates. It provides planning, engineering, architecture, environmental sciences, project management and project economics for infrastructure and facilities projects. It has more than 32,000 employees in over 450 locations in North America and offices on six continents. Compiled from public sourcesHQ: Edmonton, Canada Public sourceFounded: 1954 Public sourceSBTi: Near-term: Validated Targets; Net-zero: Commitment Removed (SBTi entity: Stantec Inc.) Public sourceSource: www.stantec.com
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S

Sweco

swecogroup.com
We are 23,000 specialists working with sustainable buildings, urban areas, infrastructure and access to energy and clean water for a sustainable future. Company websiteHQ: Stockholm, Sweden Public sourceSBTi: Near-term: Validated Targets (SBTi entity: Sweco AB) Public sourceSource: www.swecogroup.com
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W

WSP

wsp.com
WSP Global is a Montreal-based engineering and professional services firm listed on the Toronto Stock Exchange and part of the S&P/TSX 60. It has about 83,000 employees in some 500 offices across 50 countries and reported C$16.17B in 2024 revenue. It advises on transport, buildings, earth and environment, energy, water and advisory projects. Its near-term, long-term and net-zero targets are all SBTi-validated. Compiled from public sourcesHQ: Montreal, Quebec, Canada Public sourceFounded: 1959 Public sourceSBTi: Near-term: Validated Targets; Long-term: Validated Targets; Net-zero: Validated Targets (SBTi entity: WSP Global Inc.) Public sourceSource: www.wsp.com
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Ranked by verified data once available. Until then companies are shown A–Z. Paid placements are labeled Sponsored and never change the order.

Frequently asked questions

What do ESG consulting services include?

ESG consultants typically help with materiality assessments, ESG data collection, disclosure and reporting, and governance of sustainability programs. The exact scope depends on the firm and the engagement.

What are sustainability consulting services?

Sustainability consulting services cover advice on reducing environmental impact, such as greenhouse gas inventories, target setting, energy efficiency, supply chain emissions and climate risk. Some firms also help implement the plans they recommend.

Should I hire a consultant or buy software?

Software helps collect and report data on an ongoing basis, while consultants bring expertise for strategy, methodology and one-off projects. Many organizations use both.

How do I choose a sustainability consultant?

Check the firm's experience in your industry and with the frameworks you report against, ask for example deliverables, and be clear about scope, timelines and who owns the resulting data and models.

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