10 Best Sustainability Consulting Firms in Singapore (2026)

Singapore companies face rising expectations on climate and ESG, from SGX-listed sustainability reporting and carbon accounting to net-zero strategy and independent assurance, and a good consultancy matches that specific need. The firms below are real, currently operating Singapore sustainability and ESG advisers, ranging from global pure-play consultancies to local boutiques and specialist platforms. Use the list to shortlist a few, then compare their focus, frameworks and reach before appointing one.

ERM, or Environmental Resources Management, describes itself as the world's largest pure-play sustainability consultancy and has advised clients from Singapore since 1996. Its regional team of scientists, engineers and economists covers environmental, health and safety risk, permitting and impact assessment alongside climate strategy, decarbonisation, ESG and sustainability reporting. The firm runs its Southeast Asia hub from a waterfront office at Collyer Quay and works heavily with the energy and financial-services sectors. It suits larger corporates and investors needing deep technical and regulatory support across the region.

Raffles Place
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Anthesis positions itself as a global sustainability consultancy spanning ESG, net zero, nature and sustainable finance, and runs a Singapore office on Merchant Road that was incorporated in 2021. The local team advises on ESG strategy and investment, climate change, sustainability reporting, human-rights impact and business ethics for corporates and investors across Asian markets. Backed by a large international network built partly through acquisitions, Anthesis suits organisations that want a specialist sustainability adviser with regional reach rather than a generalist consulting arm.

Clarke Quay
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Paia Consulting is a Singapore sustainability advisory founded in 2002 that has worked with listed companies and other organisations on ESG strategy, sustainability reporting and sustainable finance, including advisory and verification around green, social and sustainability bonds. It has since been acquired by global real-estate group CBRE and now operates as part of CBRE's ESG consulting and sustainability team in Singapore, trading as Paia from CBRE. It suits companies wanting an established local reporting specialist now backed by a larger international platform.

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Ricardo is a global environmental and engineering consultancy with a Singapore office serving its Asia region, working at the intersection of transport, energy and the environment. The firm is known for air-quality measurement, modelling and emissions-inventory work, and its wider practice covers environmental impact assessment, energy transition, climate policy and sustainability advisory for governments, cities and businesses. With a large team of scientists and technical specialists, Ricardo suits public-sector and industrial clients that need engineering-grade environmental analysis rather than reporting support alone.

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Unravel Carbon is a Singapore-headquartered climate technology company whose main product is an AI-assisted carbon accounting platform used to measure Scope 1, 2 and 3 emissions, model decarbonisation pathways and prepare regulatory disclosures across Asia-Pacific supply chains. It is a software platform rather than a traditional consultancy, though it supports customers through guided onboarding and reporting workflows. Backed by investors including Y Combinator, it suits companies that want tooling to automate emissions data collection and reporting, complemented by structured product support.

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Sustainable Living Lab, also known as SL2, is a Singapore sustainability consultancy and innovation lab founded in 2011 that works with governments, companies and grassroots organisations across the region. It builds sustainability strategies that lean on technology, and its work spans ESG compliance, climate adaptation and resilience, circular economy and community programmes. SL2 has served as an appointed implementation partner for an industry sustainability programme aimed at SMEs. It suits smaller organisations wanting practical, hands-on help rather than a purely reporting-led engagement.

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EnviroSolutions & Consulting, known as ESC, is an environmental, health-and-safety and sustainability consultancy founded in Singapore in 2003 that has grown into a regional practice with offices across Asia. Its services span environmental planning and permitting, EHS and risk management, site investigation and remediation, waste and air-quality management, and sustainability and climate-change advisory. ESC says it has worked with Singapore government agencies as well as industrial and corporate clients. It suits organisations with operational environmental and compliance needs alongside broader ESG goals.

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Tembusu Asia Consulting is a Singapore sustainability consultancy founded in 2017 that offers end-to-end decarbonisation and ESG services from its office at One Commonwealth. Its work covers decarbonisation strategy and net-zero roadmaps, carbon footprinting and life-cycle assessment, greenhouse-gas validation and verification aligned with ISO 14064-3, and sustainability reporting under frameworks such as GRI and the GHG Protocol. The firm also runs training through its academy arm. It suits companies that want both advisory and independent GHG verification from one specialist team.

Commonwealth
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GreenA Consultants is a Singapore sustainability and green-building consultancy founded in 2009 that focuses on the built environment. It advises on green-building certification, including Singapore's Green Mark as well as LEED and Living Building Challenge schemes, alongside energy and environmental audits, environmental studies and broader sustainability strategy and reporting. GreenA works on projects across Asia and beyond and has aligned itself with net-zero building initiatives. It suits developers, architects and building owners who need technical sustainability advice tied to certification rather than corporate ESG reporting alone.

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Global Green Connect is a Singapore sustainability consultancy, certified as a B Corporation, that combines advisory with a training academy from its office at Republic Plaza. Its services include sustainability reporting aligned with GRI and ISSB standards, carbon measurement across Scope 1, 2 and 3, life-cycle assessment, supply-chain decarbonisation and mandatory packaging reporting. The academy offers professional certifications such as the Certified ESG Analyst programme. It suits companies that want reporting and assurance-oriented support plus in-house capability building rather than a one-off project.

Raffles Place
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