Sustainability is no longer a future ambition—it’s a present-day business necessity. In 2025, companies face growing pressure to cut carbon emissions, report on ESG metrics, and comply with new legislation like the CSRD. But the path to corporate sustainability isn’t easy to navigate alone.
This is where sustainability service providers come in. These companies offer everything from carbon accounting software and ESG reporting guidance to offsetting solutions and net-zero strategy development. Whether you’re a startup or a multinational, the right partner can make your journey toward decarbonization faster, smarter, and more impactful.
Here are ten of the most trusted sustainability service providers your business should know in 2025.
Why work with sustainability service providers?
2025 brings more pressure—but also more opportunity—for companies to get serious about sustainability. Businesses are now expected to reduce emissions across all scopes, disclose risks aligned with frameworks like TCFD, and deliver measurable environmental and social impact. Doing this effectively requires expertise that often goes beyond internal capabilities.
Sustainability service providers fill this gap. They offer the tools, technology, and talent that help organizations design impactful ESG strategies, implement emissions reductions, and report to investors and regulators with confidence. The best providers also offer guidance on how to turn sustainability into a growth driver, not just a compliance task.
What to look for in a sustainability partner
Choosing the right provider means more than just checking for a green logo or buzzwords. Start by considering your goals: Do you need help with regulatory compliance, reporting, footprint measurement, or offsets? From there, evaluate each provider based on these four factors:
1. Proven track record: Look for experience with companies of your size, industry, or region.
2. Data-driven solutions: Can they help you collect, analyze, and act on emissions and ESG data?
3. Regulatory expertise: Are they up to date on legislation like CSRD, SBTi, and the EU Taxonomy?
4. Transparent impact: Can they prove their claims with certifications, audits, or verifiable projects?
If a provider excels in all four, they’re likely to be a strong long-term partner.
10 sustainability service providers leading in 2025
Regreener
Regreener offers a powerful entry point for companies looking to act on climate without the complexity. Designed for simplicity and speed, their platform enables businesses to offset CO₂ emissions, plant trees, support climate-positive projects, and track progress via a real-time impact dashboard. Their Free Sustainability Scan delivers instant insights into your environmental footprint, identifying low-effort, high-impact areas for improvement.
In 2025, Regreener’s platform includes advanced analytics for emissions tracking, customizable reporting templates for CSRD alignment, and integrated employee engagement modules to activate teams across departments. With verified climate projects and transparent communication, Regreener helps SMEs and corporates alike take credible and measurable action—fast.
South Pole
South Pole is a global sustainability powerhouse offering deep expertise in climate strategy, carbon finance, renewable energy procurement, and emissions reductions. In 2025, they stand out for their AI-driven carbon accounting tools and sector-specific decarbonization pathways that help companies move beyond baseline reporting into long-term net-zero execution.
Trusted by major global brands, South Pole connects companies to high-quality carbon offset projects worldwide and helps them build investor-grade climate disclosures. They also support internal capacity building, offering training, workshops, and scenario planning tailored to your sector. If your company operates across multiple countries or industries, South Pole is a versatile partner with global reach and local expertise.
Ecochain
Based in Amsterdam, Ecochain empowers companies to understand, improve, and communicate the environmental footprint of their operations, products, and supply chains. Their environmental intelligence platform uses lifecycle assessments (LCA) to calculate real-time impact across materials, suppliers, production steps, and product lines.
In 2025, Ecochain introduces enhanced APIs that integrate directly with ERP systems and product databases, enabling footprint analysis at the product level. This makes it an ideal solution for manufacturers, consumer goods companies, and fashion brands looking to meet EU regulations while improving eco-design. Their tools support circular design thinking, hotspot analysis, and full value chain optimization, helping businesses go beyond compliance into true environmental innovation.
Plan A
Plan A is a Berlin-based ESG and carbon accounting platform built to serve both compliance and sustainability performance goals. With an intuitive dashboard and modular system, it guides businesses through carbon footprinting, target-setting, EU Taxonomy alignment, and CSRD-ready reporting. Their strength in 2025 lies in automation: Plan A removes the manual work from ESG data gathering, while helping companies turn that data into actionable insights.
Their software is particularly suited for companies in professional services, finance, and tech, where emissions are often indirect but substantial. It supports double materiality assessments, net zero planning, and stakeholder engagement, making it a one-stop platform for companies that want to scale sustainability without scaling complexity.
Normative
Normative positions itself as the world’s first science-based carbon accounting engine—and in 2025, it continues to lead the way in rigor, transparency, and scope. Built with a strong academic foundation and backed by the European Union’s Horizon initiative, Normative is especially known for its ability to measure complex Scope 3 emissions through supplier-specific data and economic input-output modeling.
The platform offers SBTi-compliant emissions pathways and built-in alignment with CDP, GRI, and CSRD standards. With new partnerships and plug-ins for major ERPs and procurement tools, Normative makes emissions tracking seamless and audit-ready. It’s a top pick for companies that need to produce verified carbon disclosures for investors, auditors, or regulatory bodies.
Sustainalize
Sustainalize is one of the Netherlands’ leading ESG consultancies, offering strategic support across sustainability reporting, materiality analysis, stakeholder engagement, and corporate governance. With offices throughout the EU and a growing portfolio of CSRD-ready clients, Sustainalize plays a key role in helping companies turn sustainability ambitions into structured action plans.
In 2025, they’ve expanded their services to include integrated value reporting and ESG risk mapping, alongside bespoke coaching for C-suite leadership. Their local expertise in Dutch and EU regulations makes them especially valuable to companies navigating the early stages of reporting or embedding sustainability deeper into business strategy.
ERM (Environmental Resources Management)
ERM is a global environmental consultancy offering comprehensive services across climate risk, sustainability strategy, biodiversity, pollution control, and circular economy planning. They are a top-tier choice for high-impact sectors such as energy, chemicals, infrastructure, and manufacturing.
In 2025, ERM offers advanced transition roadmaps that link ESG targets with financial performance, backed by scenario modeling and investor-grade disclosures. Their multidisciplinary teams help companies comply with global frameworks while managing environmental risk in complex supply chains. With ERM, large organizations gain both the technical depth and strategic foresight needed to make lasting change.
Watershed
Watershed is a modern, data-driven climate platform backed by high-profile investors and used by some of the world’s fastest-growing tech companies. With real-time tracking, reduction pathways, and emissions reporting—all in one interface—Watershed gives businesses a clear line of sight from baseline to net zero.
In 2025, they’ve rolled out supplier emissions tracking, value chain modeling, and benchmarking tools that enable companies to focus on Scope 3—often the hardest area to control. Their emphasis on real-time data makes Watershed perfect for companies that need agility, transparency, and integration into decision-making at the speed of business.
Anthesis
Anthesis is a global sustainability consultancy with over 1,300 experts working across industries to deliver decarbonization, circular economy solutions, ESG strategies, and digital transformation. In 2025, Anthesis distinguishes itself through its sector-specific “Activator” programs that help companies operationalize sustainability throughout the business—from supply chain to product design to investor engagement.
Their offerings include double materiality analysis, CSRD and SFDR compliance support, TCFD-aligned reporting, and science-based targets development. Anthesis also excels in change management, helping organizations build internal capability while delivering measurable environmental and social impact. For companies looking to embed sustainability into their DNA, Anthesis is a full-spectrum partner with a practical, data-backed approach.
How to choose the right provider
Selecting the right sustainability service provider starts with identifying your most urgent needs. Are you focused on compliance, footprint reduction, communication, or offsetting? From there, match the provider’s core offering with your priorities.
It’s often smart to combine services: for example, using software like Plan A or Ecochain alongside a strategic advisor like Sustainalize or Anthesis. Don’t forget to ask for case studies, certifications, and measurable results.
For businesses just beginning their journey, using a quick benchmarking tool like the Free Sustainability Scan from Regreener can offer immediate clarity and direction.
Conclusion
2025 is a turning point for corporate sustainability. Companies that take action now will lead their industries, attract top talent, satisfy investor expectations, and avoid regulatory risks. But going it alone is inefficient—and potentially risky.
By working with one or more of these trusted sustainability service providers, your business can accelerate progress toward net zero, unlock real business value, and tell a credible ESG story to all stakeholders. From tech-driven carbon accounting platforms to seasoned consulting firms, this list gives you a head start in building a more sustainable—and successful—future.
Ready to take your first step? Start with Regreener’s Free Sustainability Scan and discover the actionable opportunities waiting inside your business.
