Sustainability Services Group

What Sustainability Services Group does

Sustainability Services Group, LLC (SSG) is a New York-based, MBE-certified boutique management consulting firm founded in 2023 by Michael Littlejohn, a former senior executive at PwC, IBM, and EY with more than 35 years of professional services experience. The firm delivers advisory services across six practice areas — Climate Adaptation and Mitigation, Climate Risk Management, Organizational Change Management, Reporting and Disclosure, Value Creation, and ESG — guiding private-sector companies (particularly those under $1B in annual sales), government agencies, educational institutions, healthcare organizations, NGOs, and not-for-profits on sustainability, Net-Zero, climate risk, and disclosure compliance (GRI, TCFD, IFRS, SEC, California).

The firm operates without any proprietary technology platform; its deliverable is bespoke consulting work performed by a 1-10 person team. SSG holds practitioner credentials from ACCO, CMI, CSE, and GRI, is an MBE-certified entity through the National Minority Supplier Development Council and New York State, and is pursuing New York City MBE certification to access public-sector and corporate supplier diversity pipelines. Geographic reach is claimed across North America, Europe, Asia, and the Middle East, though the firm has only a single New York headquarters.

SSG's revenue model is professional services — bespoke advisory engagements quoted via a website contact form — with no disclosed pricing, no funding raised, and no public customer logos. Distribution is entirely direct, supported by content marketing through an Articles and Resources blog and SEO-oriented thought leadership on smart cities, ESG, and climate disclosure.

Name

Sustainability Services Group

Legal name

Sustainability Services Group, LLC

Website

https://ssgglobal.org

Company type

Private

Founded year

2023

Operating status

Operating

Headcount range

1–10 employees

Short description

Sustainability Services Group is an MBE-certified New York boutique management consulting firm, founded in 2023 by a former PwC/IBM/EY executive, that delivers bespoke sustainability, ESG, climate risk, and disclosure advisory services to mid-market private companies, governments, and not-for-profits.

Ownership category

akta.pro rank

Product category

Sustainability Consulting Services

NAICS

Environmental Consulting Services (541620)

SIC

Services-Management Consulting Services (8742)

akta.pro primary industry

Sustainability & ESG Consulting (BPAHACAK)

akta.pro secondary industries

Sustainability, ESG & Climate Risk Advisory (BPAHAJAH), ESG Governance, Sustainability Reporting & Assurance Advisory (BPAHAFAJ)

Keywords

• Sustainability consulting
• Climate risk advisory
• ESG advisory services
• Net-zero strategy
• Sustainability reporting

Headquarters

HQ city

New York

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales

Revenue model

1. Management Consulting Advisory Services: SSG generates revenue through professional consulting engagements, providing advisory services on sustainability strategy, climate risk management, ESG governance, Net-Zero planning, and reporting/disclosure compliance to businesses, governments, NGOs, and not-for-profit organizations.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Sustainability Services Group is a boutique management consulting firm that delivers bespoke advisory engagements spanning six service areas: Climate Adaptation and Mitigation, Climate Risk Management, Organizational Change Management, Reporting and Disclosure, Value Creation, and Environmental, Social, and Governance (ESG) advisory. The firm helps businesses, governments, NGOs, and not-for-profits reduce their environmental impact, fortify operations against climate risk, achieve Net-Zero status, implement ESG governance, and comply with emerging sustainability disclosure regulations such as GRI, TCFD, and IFRS.

Product overview

Sustainability Services Group is a management consulting firm offering advisory services, not a software product platform. The company provides a portfolio of consulting services including Climate Adaptation and Mitigation, Climate Risk Management, Organizational Change Management, Reporting and Disclosure, Value Creation, and ESG advisory. These services help clients fortify operations against climate change impacts, achieve Net-Zero status, implement ESG principles, and improve environmental performance reporting and disclosure. The services are delivered through advisory engagements rather than a software platform or product modules.

Differentiator

Problem solved

Functional benefit

Products and services

• Climate Adaptation and Mitigation
• Climate Risk Management
• Organizational Change Management
• Reporting and Disclosure
• Value Creation
• Environmental, Social, and Governance (ESG) Advisory

Quantifiable outcome

• Organizations can reduce their carbon and GHG footprint and achieve carbon neutrality and Net-Zero status.
• +2 more outcomes

Segments6 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators2 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Anthesis Group: Boutique global sustainability consultancy offering strategy, ESG advisory, climate risk, and disclosure services. Directly comparable to SSG in service mix, mid-to-large client focus, and advisory-only delivery model.
• BSR (Business for Social Responsibility): Global nonprofit advisory network helping companies with sustainability strategy, ESG governance, and disclosure. Comparable to SSG in serving multi-segment clients (corporate, government, NGO) with bespoke advisory.
• South Pole Group: Climate solutions and sustainability advisory firm serving corporates and governments with Net-Zero strategy, climate risk, and ESG services. Closely mirrors SSG's climate adaptation, mitigation, and disclosure advisory offerings.
• Quantis: Sustainability consulting firm specializing in footprinting, climate strategy, and ESG advisory for global enterprises. Directly comparable to SSG's climate risk, GHG reduction planning, and value-creation service lines.

Broad incumbents

• Sphera: ESG, EHS, and sustainability software and advisory provider to large enterprises. Overlaps with SSG's climate risk management and ESG governance service lines, typically serving larger buyers.
• ERM (Environmental Resources Management): Largest pure-play environmental and sustainability consultancy with global delivery. Overlaps with SSG across climate risk, EHS, and sustainability advisory but at far greater scale and breadth.
• Schneider Electric Sustainability Business: Industrial sustainability and energy advisory arm of a global technology company, offering Net-Zero strategy, ESG consulting, and reporting services. Competes with SSG in the broader climate advisory market though typically at much larger engagement scale.
• KPMG ESG Advisory: Big 4 advisory practice offering climate risk, ESG assurance, and sustainability reporting services. Competes with SSG in the same climate/ESG advisory category, particularly for clients needing Big 4-branded assurance.

Emerging players

• Watershed: Enterprise climate platform combining GHG accounting software with advisory services. Represents a competitive threat and partial alternative to SSG's disclosure/climate risk advisory offerings as buyers shift toward integrated software-plus-services models.
• Sia Partners: Management consulting firm with a growing sustainability and climate practice serving mid-market and enterprise clients. Comparable to SSG in targeting buyers seeking agile, boutique-style advisory with multi-vertical reach.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/sustainability-services-group

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Sustainability Services Group