Best Sustainability Strategy Consulting Services in the USA

United States Sustainability Strategy Consultants

Sustainability is no longer a niche initiative, it’s a strategic priority that directly shapes brand reputation, operational resilience, and long-term profitability. Across the United States, a growing number of consultancies are helping organizations integrate sustainability into every decision-making layer, from supply chain to brand storytelling. These firms stand out not only for their technical expertise but also for their radical authenticity: a commitment to solutions grounded in measurable impact, transparent reporting, and ethical alignment.

This curated list highlights trusted, research-driven, and client-reviewed sustainability strategy consulting agencies in the USA. Whether you’re a startup seeking your first ESG roadmap or a multinational looking to recalibrate targets to align with the Science Based Targets initiative (SBTi), these consultancies bring the frameworks, expertise, and industry credibility you need.

Methodology: How We Chose These USA-based Sustainability Strategy Consulting Services

We applied a three-part selection framework to ensure only credible, impactful consultancies are included:

• Research-driven: Inclusion required verifiable results, published frameworks, and documented case studies that demonstrate measurable sustainability outcomes.
  
  
• Client-reviewed: Each consultancy has received authentic client feedback showing clear return on investment (ROI) and strong working relationships.
  
  
• Location-based: All providers and their founders are firmly rooted in the United States, with a proven track record of work within the region.

🌟 US-Based Sustainability Strategy Consultants - Provider Spotlights

🌱 CO2Action

‍What they do: CO2Action specializes in greenhouse gas (GHG) measurement, carbon footprint reduction planning, and climate impact reporting. They help organizations design actionable pathways to reach net-zero and comply with U.S. and global reporting standards.
Who they work with: Corporations, municipalities, and nonprofit organizations with decarbonization goals.
Operating model: Works through a data-first approach, integrating emissions tracking tools with leadership workshops for long-term adoption.

Why they stand out:

• Proprietary emissions tracking dashboard tailored for client-specific operations.
  
  
• Deep knowledge of both U.S. EPA and international carbon accounting frameworks.
  
  
• Combines technical audits with behavior-change initiatives for lasting impact.

Herman Rojas, Founder, CO2Action

Herman Rojas is an environmental engineer and sustainability strategist with over 20 years of experience in climate action planning. He has led large-scale carbon footprint projects for cities and Fortune 500 companies, aligning sustainability metrics with regulatory requirements and corporate objectives. Known for his pragmatic, metrics-driven approach, Herman bridges the gap between technical reporting and executive decision-making. His leadership style emphasizes collaboration, ensuring all stakeholders—from procurement teams to C-suite executives—are aligned on climate goals.

🌱 Clearyst°

‍What they do: Clearyst° is a sustainability software and advisory company providing digital tools for ESG tracking, data visualization, and impact measurement. Their platform integrates directly with corporate data systems to simplify ESG reporting and improve transparency.
Who they work with: Enterprises, investment firms, and high-growth companies needing scalable ESG management tools.
Operating model: Offers both SaaS solutions and advisory services, ensuring clients can track and act on their sustainability data in real time.

Why they stand out:

• Cloud-based ESG data management with automated reporting features.
  
  
• Strong integration capabilities with existing enterprise software.
  
  
• Proven track record in helping clients improve ESG scores for investor relations.

Paul Ghiz & Chris Robinson, Co-Founders, Clearyst°

Paul Ghiz is a technology entrepreneur with a history of building data-centric platforms that deliver measurable impact. Chris Robinson brings two decades of experience in sustainability strategy and data analysis. Together, they blend tech innovation with deep ESG expertise, enabling organizations to make sustainability a core operational driver. They are known for their focus on data integrity and client empowerment, ensuring tools are both powerful and easy to adopt.

🌱 Sustrana

‍What they do: Sustrana is a consulting and software firm providing strategy development, training, and tools for building sustainable business practices. They focus on integrating sustainability into core operations and corporate governance.
Who they work with: Mid-to-large companies across industries seeking to embed sustainability into business strategy.
Operating model: Offers a blend of SaaS strategy tools, capacity-building workshops, and custom consulting services.

Why they stand out:

• Proprietary sustainability management software.
  
  
• Expertise in governance frameworks and policy alignment.
  
  
• Strong emphasis on capacity building within client organizations.

Nancy S. Cleveland, Co-Founder, Sustrana

Nancy S. Cleveland is a recognized leader in sustainability strategy and governance. With years of experience advising boards and executives, she focuses on integrating ESG principles into decision-making processes. Nancy’s approach combines legal, operational, and cultural insights to help organizations create lasting sustainability commitments. Her thought leadership is widely respected in both corporate and nonprofit sectors.

🌱 Green Impact

‍What they do: Green Impact offers sustainability strategy, stakeholder engagement, and program design services, helping clients translate environmental goals into actionable initiatives.
Who they work with: Corporations, universities, and nonprofits aiming to design and execute impactful sustainability programs.
Operating model: Project-based consulting with a focus on customized, mission-aligned solutions.

Why they stand out:

• Extensive experience in crafting tailored sustainability communications.
  
  
• Deep expertise in employee and stakeholder engagement.
  
  
• Innovative program designs that blend environmental goals with brand values.

Deborah Fleischer, Founder, Green Impact

Deborah Fleischer is a sustainability strategist and engagement expert with a track record of helping organizations unlock the business value of sustainability. With a background in environmental policy and communications, she designs programs that inspire participation and drive measurable change. Her work bridges the gap between vision and execution, ensuring sustainability strategies resonate internally and externally.

🌱 EarthShift Global

‍What they do: EarthShift Global provides life cycle assessment (LCA) consulting, training, and software tools to help organizations measure and improve environmental performance.
Who they work with: Manufacturers, product developers, and sustainability teams needing robust LCA insights.
Operating model: Combines technical consulting with software licensing and capacity-building programs.

Why they stand out:

• Expertise in life cycle assessment methodologies.
  
  
• Developer of accessible, user-friendly LCA software.
  
  
• Committed to training clients for independent sustainability analysis.

Lise Laurin, Founder & CEO, EarthShift Global

Lise Laurin is a pioneer in life cycle assessment and sustainability metrics. With decades of experience, she has helped organizations across sectors understand and reduce their environmental impacts. Lise is passionate about making LCA accessible to a wider audience, empowering professionals to use data as a driver for sustainable design and innovation.

🌱 Terra Nexus

‍What they do: Terra Nexus specializes in regenerative design and sustainability integration for the built environment, helping projects go beyond net-zero toward net-positive impact.
Who they work with: Architects, urban planners, developers, and municipalities committed to regenerative outcomes.
Operating model: Offers consulting, design collaboration, and systems-thinking workshops.

Why they stand out:

• Expertise in regenerative design principles.
  
  
• Focus on community-scale sustainability solutions.
  
  
• Systems-thinking approach to project planning and execution.

Laura Klein, Founder, Terra Nexus

Laura Klein is an environmental designer and strategist focused on regenerative systems and sustainable urbanism. With experience spanning architecture, landscape design, and community engagement, she helps clients envision projects that restore rather than deplete natural systems. Laura’s work is recognized for its creativity, technical rigor, and commitment to long-term ecological resilience.

🌱 Terra Alpha Investments

‍What they do: Terra Alpha Investments is an investment firm that integrates environmental productivity metrics into portfolio management, promoting sustainable corporate practices through capital allocation.
Who they work with: Institutional investors and companies seeking capital from sustainability-focused funds.
Operating model: Active investment management guided by environmental productivity research and ESG integration.

Why they stand out:

• Pioneers in linking financial returns with environmental productivity.
  
  
• Strong engagement with portfolio companies to drive sustainability improvements.
  
  
• Global investment perspective grounded in environmental data.

Tim Dunn, CEO & Co-Founder, Terra Alpha Investments

Tim Dunn has over three decades of experience in global investment management. He co-founded Terra Alpha to align financial performance with environmental stewardship, leveraging data-driven insights to influence corporate behavior. Tim is a frequent speaker on sustainable finance and is known for his advocacy of integrating environmental productivity into mainstream investment strategies.

🌱 Green Buoy Consulting

‍What they do: Green Buoy Consulting provides sustainability consulting to early-stage and growth-stage companies, with a focus on creating practical, scalable strategies.
Who they work with: Startups, small businesses, and mission-driven companies.
Operating model: Flexible project and retainer-based services tailored to client capacity and growth stage.

Why they stand out:

• Startup-friendly sustainability frameworks.
  
  
• Expertise in balancing sustainability goals with growth demands.
  
  
• Practical, phased approaches for long-term success.

Eliza Erskine, Founder, Green Buoy Consulting

Eliza Erskine is a sustainability consultant with a passion for helping small and emerging businesses embed sustainability from the start. With an MBA in Sustainability and years of consulting experience, she designs strategies that grow with the company. Eliza’s work is marked by her pragmatic, empathetic approach, enabling founders to achieve sustainability goals without sacrificing growth momentum.

Data-Driven Sustainability Consulting: Shaping Measurable Climate Action in the USA

Sustainability strategy consulting in the USA focuses on helping organizations measure environmental impact, reduce carbon footprints, and integrate ESG principles into operations. These services combine data-driven tools with expert advisory to ensure compliance with both national and international standards. Providers in this space support diverse sectors, including corporations, municipalities, nonprofits, and startups, with tailored frameworks for achieving climate and sustainability goals. They stand out for proprietary platforms, advanced analytics, and strong integration capabilities that turn environmental data into actionable strategies. By bridging technical expertise with stakeholder engagement, these consultants drive long-term adoption of sustainable practices across industries.

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