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Carbon Accounting

Carbon Accounting Software

CEMAsys Carbon Accounting Software can help you accurately measure, effectively manage, and efficiently report your business climate impact.
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Where sustainability work becomes structured, credible, and built to last.

We offer you a solution that organises your data, ownership, and workflows in one place, giving you control, confidence, and the capacity to scale without adding headcount.

With the CEMAsys platform, you can get started quickly and stay supported as complexity, evolving requirements, and stakeholder requests grow.
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Clear ownership
and structure

Create clear ownership and structure across teams, even as demands and expectations grow.
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Credible data you don’t second-guess

Build traceable, consistent sustainability data you’re confident in, ready when questions come, without last-minute stress.
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Scale without growing the team

Handle growing sustainability demands without hiring more people, increasing consultant dependency, or rebuilding your setup.
Recognized results, global reach, and local expertise
Our client portfolio consists of over 800 companies, from small and medium-sized businesses (SMBs) to Fortune 500 firms. Spanning diverse industries, CEMAsys enables our clients to enhance their sustainability strategies by integrating innovative system solutions with analytical expertise. Our customers have attained remarkable results with guidance from CEMAsys. For instance, several of them are featured on the prestigious list of Europe’s Climate Leaders 2025!

We have offices in Oslo, Copenhagen, Stockholm, and Boston. Despite our physical presence in the Nordics and the USA, we deliver services to businesses and companies worldwide and are connecting over 150 countries with the platform.
Hear from our customers  →
Step 1

Collect High-Quality Operational Data

Our carbon accounting model is built on the internationally recognized and supported by a comprehensive global emissions factor database. Our dedicated mission ctor team ensures your reporting is grounded in accurate, reliable, and verifiable data.

We support multiple data collection approaches, ranging from manual uploads and structured templates to automated API integrations, so companies can start where they are and scale over time. While advanced API connections enable direct transfer of live activity and spend-based data from existing systems, alternative methods allow organizations to progressively expand emissions coverage from partial estimates to complete Scope 1, 2, and 3 reporting.
Diagram showing data flow into the Greenhouse Gas Protocol. On the left, an icon of a tree connects to the protocol. On the right, a box labeled ‘API’ also connects to the protocol. Both feed into a central box labeled Greenhouse Gas Protocol with its logo.
Step 2

Manage Complex Business Structures and Industry-Specific Needs

CEMAsys’ GHG Carbon Accounting solution is built to handle complex organizational structures, multiple entities, and industry-specific reporting requirements. Whether you operate across regions, business units, or supply chains, our platform adapts to your structure, ensuring consistent, accurate emissions calculations across Scope 1, 2, and 3. Backed by more than a decade of cross-industry experience, we help organizations of all sizes manage complexity with confidence.
Diagram showing how complex business structure and industry-specific needs
Step 3

Highlight Your
Sustainability Achievements

At CEMAsys, we provide a Carbon Accounting solution that aligns with global standards such as CSRD, CDP, SB- 253, and SECR, enabling you to track performance and share progress with stakeholders through clear tables, graphs, and reports that showcase your ESG impact.
A dark diagram illustrating reporting graphs.
Step 4

Track Progress Against
your Targets

Use CEMAsys’ Low Carbon Transition tool to align with the Science Based Targets initiative (SBTi) and support the global goal of limiting warming to 1.5°C, in line with the Paris Agreement.
A dark diagram illustrating a graph for a action plan

Over 800 companies
work with CEMAsys

Christoffer Brask
HSEQ Manager, Vestia Construction Group

“CEMAsys has given us a much more structured approach to sustainability reporting. The system is easy to use, and their team has been incredibly helpful—especially as we navigated ESRS for the first time.”

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Dorthe Aaboe Kallestrup
Head of ESG at IBF A/S

“Over the past 10 years, I have introduced CEMAsys to three different workplaces—and there’s a reason for that. The modules are easy to use, and getting assistance from our consultant, whether by email or phone, is always hassle-free.”

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Arnstein Moy
Head of Sustainability, OneCo

“CEMAsys has given us the tools and expertise to move from manual tracking to a structured ESG framework, making compliance and sustainability efforts more efficient.”

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Irene Brenden
Sustainability Manager, Jernia

“My personal experience with CEMAsys has been exceptional. They’ve listened, acknowledged my perspectives, and challenged me to think differently."

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Sandy S. Schrøder
Head of ESG reporting, Reitan Retail

"We highly recommend working with CEMAsys. Their expertise, proactive approach, and commitment to sustainability have been invaluable in our journey towards a more sustainable future. It is truly a great collaboration"

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Carina Jönsson
Group HSE Director, Cloetta

“CEMAsys makes life easy for everyone involved in the sustainability / ESG data management and reporting”

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Ready to take your sustainability efforts to the next level?
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