CI3, s.r.o.

What CI3, s.r.o. does

CI3, s.r.o. is a Prague-based carbon footprint and ESG consulting firm co-founded in summer 2021 by Josef Novák and Viktor Třebický, both PhDs in applied and landscape ecology from Charles University, operating commercially alongside its non-profit sister organization CI2, o.p.s. (founded 2013). Its core product is the CarbonFix online calculator — a web-based platform built on GHG Protocol methodology and ISO 14064/14067 standards, independently verified to ISO 14064-3, with specialized variants for events and schools (CarbonFix pro školy). The firm is the only locally accredited Carbon Disclosure Project (CDP) partner for both the Czech Republic and Slovakia, holds ISO 9001 certification and an EcoVadis Bronze Medal, and combines digital tooling with expert consulting across ESG reporting (CSRD, ESRS, NFRD), CBAM advisory, Science-Based Target setting, decarbonization strategy, and carbon offset consulting.

The firm's revenue model is overwhelmingly professional services-led, anchored by bespoke carbon footprint calculation and ESG advisory engagements delivered through a direct enterprise sales motion with a 1-business-day callback SLA. A subscription/self-serve SaaS tier (CarbonFix) sits beneath the consulting workflow as a freemium funnel, with paid tiers including expert review by CI3 staff and certification within the SledujemeCO2 program. Customers span large Czech and Slovak corporates across banking (MONETA), insurance (Kooperativa, Direct pojišťovna), energy (E.ON, PRE, Nano Energies), rail (ČD, VÚZ), real estate (CPI Property Group), telecom (Vodafone), media (TV Nova), manufacturing (Třinecké železárny, Prusa Research, Kofola), logistics (DB Schenker), and IT services (Cleverlance, AEC, DATASYS). CI3 distributes through direct enterprise sales, the CarbonFix self-serve web product, and partner referrals via CI2, o.p.s., SUSTO, and industry associations, with marketing executed primarily through content (bilingual Czech/English blog, glossary) and LinkedIn.

Pricing is not publicly disclosed; CDP questionnaire access carries an industry-standard ~€3,000 fee paid directly to CDP rather than to CI3. The firm is privately held (s.r.o.) with founder-controlled ownership, no external investors, no parent company, and no subsidiaries; it operates from a registered headquarters in Rudná and an operational office at Oldřichova 517/33, Prague 2.

Name

CI3, s.r.o.

Legal name

CI3, s.r.o.

Website

https://ci3.co.cz

Company type

Private

Founded year

2021

Operating status

Operating

Headcount range

1–10 employees

Short description

CI3, s.r.o. is a Prague-based carbon footprint and ESG consulting firm — the only locally accredited CDP partner for the Czech Republic and Slovakia — providing GHG Protocol-based footprint calculations, ESG/CSRD reporting, CBAM advisory, and decarbonization strategy to Czech and Slovak enterprises via its CarbonFix online platform and direct consulting model.

Ownership category

akta.pro rank

Product category

Sustainability Consulting

NAICS

Environmental Consulting Services (541620)

SIC

Services-Commercial Physical & Biological Research (8731)

akta.pro primary industry

ESG/Sustainability Reporting & Disclosure Platforms (EUABAEAB)

akta.pro secondary industries

Supply Chain (Scope 3) Emissions & Supplier Engagement Platforms (EUABAEAE), Supply Chain & Product Carbon Advisory (Scope 3 Procurement, PCF Support) (EUABADAJ), Benchmarking, Ratings & Stakeholder Reporting Portals (Scorecards, Dashboards) (EUABAEAJ)

Keywords

• Carbon footprint consulting
• ESG advisory services
• Decarbonization strategy
• GHG Protocol reporting
• Sustainability consulting

Headquarters

HQ city

Rudná

HQ country

Czechia

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Others

Revenue model

1. Carbon Footprint Calculation Services: Comprehensive consulting and calculation of carbon footprints for companies, products, and events following GHG Protocol and ISO standards. Clients can also use the CarbonFix online calculator independently. Includes expert review of paid-tier calculations by CI3 team and issuance of certificates within the SledujemeCO2 program.
2. ESG Reporting Support: Systematic ESG reporting consulting covering environmental, social, and governance aspects. Helps clients align with European standards (CSRD, ESRS), optimize ESG data, and prepare for legislative changes.
3. CDP and CBAM Reporting: Specialized consulting for CDP questionnaire completion (as the only CDP-accredited partner for CZ/SK) and CBAM carbon border adjustment mechanism reporting, including carbon tax preparation.
4. Decarbonization Strategy and Climate Policy: Advisory services for creating company climate policies, setting Science-Based Targets, and developing realistic decarbonization plans leading to climate neutrality.
5. Awareness, Training and Seminars: Introductory and advanced seminars and training on carbon footprint calculation and reporting, customized for services, heavy industry, or other sectors.
6. CarbonFix SaaS Tool: Online calculator with multiple paid tiers offering different levels of detail. Free demo version available. Paid versions include professional review by CI3 team and certificates within the SledujemeCO2 program.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

CI3 is an independent Czech consulting firm that calculates corporate, product, and event carbon footprints, provides ESG and CDP reporting consulting, and designs decarbonization strategies aligned with GHG Protocol, ISO 14064, and Science-Based Targets. Its proprietary CarbonFix online calculator (independently verified against ISO 14064-3) complements the consulting services and is offered in specialized versions for events and schools.

Product overview

CI3, s.r.o. is an independent consulting organization specializing in carbon footprint calculations and ESG services. The core offering includes the CarbonFix online calculator platform (with specialized versions for schools), supplemented by advisory services covering ESG reporting, decarbonization planning, CDP/CBAM reporting support, sustainability training, and carbon offset consulting. The products work together to guide companies from initial carbon footprint calculation through strategy development to achieving climate neutrality.

Differentiator

Problem solved

Functional benefit

Products and services

• CarbonFix Web-based carbon footprint calculator platform for companies, products, and events based on GHG Protocol and ISO 14064 standards. Offers tiered packages from basic overview to detailed reports with optional expert review and SledujemeCO2 program certification.
• CarbonFix Event Specialized version of the CarbonFix tool for calculating the carbon footprint of conferences, festivals, and corporate events, verified against ISO 14064-3 and based on the GHG Protocol methodology.
• CarbonFix pro školy (CarbonFix for Schools) Online tool tailored for schools and educational institutions to calculate their operational carbon footprint, identify main emission sources, and use the data as an educational resource for students and staff.
• ESG Reporting Service Comprehensive consulting supporting companies in preparing ESG reports aligned with European standards (CSRD, ESRS, NFRD), including sustainability strategy recommendations and regulatory compliance preparation.
• Decarbonization Plan Service Creation of realistic and effective decarbonization plans based on carbon footprint calculations using the Science Based Targets methodology, designed to move companies toward climate neutrality.
• CDP and CBAM Reporting Service Specialized consulting for CDP questionnaire completion and CBAM (Carbon Border Adjustment Mechanism) reporting, including preparation for carbon tax obligations, leveraging CI3's unique status as the only CDP-accredited partner in CZ/SK.
• Awareness and Training (Osvěta a školení) Seminars and training sessions on carbon footprint calculation and reporting, customized for client sectors (services, heavy industry, agriculture, etc.) to build internal sustainability capabilities.
• Carbon Offsets Advisory (Offsety) Consulting and assistance in selecting appropriate carbon offset projects such as reforestation, renewable energy, or energy efficiency initiatives to compensate residual emissions and progress toward climate neutrality.

Quantifiable outcome

• All Czech and Slovak clients helped by CI3 in CDP reporting achieved at least B-grade score (the highest tier in the region)
• +2 more outcomes

Named customers30 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Seven partnerships are on record, tiered core and minor.

• CI2, o.p.s.coreStrategic or Co-development Partner · 1 January 2021CI2, o.p.s. is the sister nonprofit organization co-founded by the same founders as CI3 in 2013. CI2 handles nonprofit climate education projects including OFFSETUJEMECO2 (Czech offset projects), the SledujemeCO2/SnižujemeCO2 (SCO2) program, and the educational aspects of CarbonFix pro školy. CI3 refers clients to CI2 for offset project information and educational services, while CI2 provides the nonprofit educational framework and program administration.
• Výzkumný Ústav Železniční, a. s. (VÚZ)minorStrategic or Co-development PartnerVÚZ (Railway Research Institute) is both a partner and a client of CI3. As a partner, they collaborate on sustainability in the railway sector. As a client, they receive carbon footprint and ESG consulting services.
• Squelle Group, s.r.o.minorStrategic or Co-development PartnerSquelle Group is listed as a partner. Details of the partnership collaboration are not explicitly specified in the available source material.
• CDP (Carbon Disclosure Project)coreOthersCI3 is the only locally accredited CDP partner for Czech Republic and Slovakia. This accreditation enables CI3 to officially support companies with CDP questionnaire completion and provides access to CDP methodologies, resources, and network. CI3 promotes this partnership prominently on its website and marketing materials.
• Asociace společenské odpovědnosti (CSR Association)minorOthersCI3 is a member of the Association of Social Responsibility (CSR Association), which promotes corporate social responsibility in the Czech Republic. Membership provides networking and visibility within the Czech sustainability community.
• MAS jihozápad (Local Action Group Southwest)minorOthersCI3 is a member of MAS jihozápad, a Local Action Group operating in the Southwest Czech Republic region. This membership may support CI3's work with regional clients and projects.
• Ministerstvo životního prostředí (Ministry of Environment, Czech Republic)minorOthersThe Ministry of Environment supported the CarbonFix pro školy project as part of the initiative 'Uhlíková stopa školy: od výpočtu k odpovědné spotřebě vzdělávací instituce' (Carbon Footprint of Schools: from calculation to responsible consumption).

Scale indicators5 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Sweep: French carbon and ESG data management platform with CSRD, CDP, and SBTi workflows built in. Closely comparable to CI3 in serving mid-market European companies with combined software + advisory carbon management.
• Normative: Stockholm-based carbon accounting SaaS platform with deep CSRD/ESRS alignment and enterprise-grade methodology. Compares to CI3 as a regulated, methodology-led carbon accounting provider expanding into European mid-markets.
• Persefoni: US-headquartered carbon accounting and climate management platform with strong enterprise footprint and CSRD module. Comparable to CI3 as a methodology-led carbon accounting provider targeting regulated enterprises.
• Plan A: Berlin-based carbon accounting SaaS platform offering GHG Protocol-based emissions tracking and CSRD-aligned reporting. Directly comparable as a carbon accounting software + advisory provider competing for the same European mid-market and enterprise customers that CI3 serves.
• South Pole: Zurich-headquartered climate solutions provider offering carbon advisory, target setting, and offsetting. Comparable to CI3 in delivering methodology-driven carbon consulting plus carbon credit portfolio services to corporates.
• ClimatePartner: Munich-based carbon accounting, advisory, and offsetting provider serving European enterprises. Directly comparable to CI3 in combining carbon footprint calculation methodology with offset advisory and climate strategy services.
• Watershed: Enterprise climate platform combining GHG accounting, disclosures, and decarbonization planning. Closely comparable to CI3's combined carbon accounting + decarbonization strategy offering, though at significantly larger scale.

Regional players

• Frank Bold: Czech-headquartered sustainability consultancy with active CEE practice in CSRD reporting and ESG strategy. Comparable to CI3 as a regional CEE sustainability and ESG reporting specialist, though operating at broader scope across EU markets.

Broad incumbents

• Deloitte Czech Republic (Sustainability & Climate): Big Four advisory with dedicated sustainability and climate practice in Prague, offering CSRD, CDP, and decarbonization services. Comparable to CI3 as a competitor for the same enterprise clients on CSRD and ESG mandates, though part of a broader portfolio.
• PwC Czech Republic (Sustainability): Big Four advisory with sustainability practice in Prague covering CSRD, ESG assurance, and climate reporting. Comparable to CI3 as a competitor for enterprise CSRD and CDP engagements, with broader geographic and service reach.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/ci3-s-r-o

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

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 CI3, s.r.o.