- 1Mobility accounts for 40 to 60% of the footprint. The largest source, and the most political.
- 2Scope 3 accounts for 85 to 95% of emissions. A BEGES limited to scopes 1-2 is worthless.
- 3Quick measures exist: catering, IT purchasing, travel policy. There is no need to wait for major renovations.
- 4Students are a unique data collection resource. No other sector mobilises so many methodical contributors.
Between the Ministry of Higher Education’s Climate and Biodiversity Plan, the Accord de Grenoble (Grenoble Agreement) signed by more than 100 institutions, the mandatory greenhouse gas emissions report (BEGES) every three years and accreditations (CTI, EQUIS, AACSB) now incorporating climate criteria, a school director or university president who has not structured a carbon strategy in 2026 is falling behind in ways that are difficult to recover.
Four figures before the detail
of the footprint in scope 3: a BEGES limited to scopes 1-2 says nothing
for mobility alone: the dominant and most political source
of CO₂e per student per year, depending on institution profile
difference between a regional IUT and an international business school
This guide starts from practical experience. It addresses senior management, sustainability leads and transition teams who want to understand what a Bilan Carbone® (the French carbon accounting method) measures on a campus and where to start in practice.
1How much does a school or university emit?
Between 5,000 and 60,000 tonnes of CO₂e per year, depending on the profile: that is the order of magnitude. Per student, the range is 1 to 8 tonnes, and this factor-of-5 difference reflects the model rather than size: who flies, who researches, who heats what.
What distinguishes higher education from a conventional company is that scope 3 accounts for 85 to 95% of the total footprint. A campus is an ecosystem of mobility, services and purchasing whose footprint is almost entirely upstream and downstream, rather than a factory burning gas. In other words, what a Bilan Carbone® measures here is an organisation of flows rather than a fleet of boilers.
In practice, the ranges observed in published footprints, cross-checked with data from The Shift Project - ClimatSup, CGE (Conférence des grandes écoles) and France Universités, are:
- Single-site IUT (university institute of technology) or regional school (1,000-3,000 students): 5,000 to 12,000 tCO₂e/year, or 3 to 5 tCO₂e per student
- Multidisciplinary university (15,000-40,000 students): 15,000 to 40,000 tCO₂e/year, or 1 to 2 tCO₂e per student (scale effect)
- International business school (5,000-10,000 students): 20,000 to 50,000 tCO₂e/year, or 4 to 8 tCO₂e per student (air travel)
- Engineering school with laboratories (2,000-5,000 students): 10,000 to 30,000 tCO₂e/year, varying with research intensity
The factor-of-5 variation between a regional IUT and an international business school comes almost entirely from two variables: international mobility (student and academic flights) and the intensity of scientific research.
2The sources that make up a campus footprint
At a standard higher education institution, the ranking of sources recurs. Percentages vary by type, but the order remains stable.
The same exercise, three very different footprints
Choose the closest profile to yours: the ranking of sources, total and intensity per student adjust.
Multidisciplinary university, 15,000 - 40,000 students, older estate across multiple sites.
Order of magnitude
20,000 - 60,000 tCO₂e/year
Intensity
2 to 4 t/student
- Mobility (40-60%): commuting, academics’ business travel and international student mobility. The dominant source and the most political.
- Property estate (15-30%): heating, air conditioning and building electricity. Campuses built between 1960 and 1990 are the most energy-intensive (concrete, single glazing, gas/oil heating).
- Catering and purchasing (10-20%): institutional catering, IT purchasing, consumables and furniture. The quickest measures to implement.
- Research and laboratories (5-30%): specialist gases, energy-intensive equipment, computing servers and chemical consumables. This source varies greatly depending on whether the institution has natural science laboratories.
- Digital (3-10%): computers, servers, networks and data centres. Often underestimated.
Two profiles stand out clearly. International business schools have footprints dominated by flights (semesters abroad, double degrees, conferences): mobility can reach 60% of the total. Science universities have an unusually large research source (laboratories, high-performance computing, specialist gases), which can account for 20 to 30% of the footprint. The property estate is significant everywhere, particularly at historic universities in older buildings across several sites.
3International mobility: the source that determines everything
At a major business school, international student mobility can account for 30 to 50% of the total footprint. It is the largest source and the most political: semesters abroad, learning expeditions and double degrees are central to the educational model and the institution’s commercial promise.
The political source, quantified with your parameters
Three settings establish the order of magnitude of the most debated source in an institution’s footprint.
Estimated international mobility
1,680 tCO₂e/year
Equivalent to ≈
8% of the footprint
Equivalent
960 Paris-NY return trips
International mobility accounts for 30 to 50% of a grande école’s footprint. An institution’s entire climate governance revolves around this source because it is the only one that touches the institution’s very identity.
Some institutions choose to exclude it from the scope "as a precaution", to avoid internal debate. This is the worst option: the figure always comes to light, and the institution has lost two years of governance on the issue. Institutions that address it manage it: consolidated rather than multiplied semesters, mandatory rail travel below 4 hours 30 minutes, denser intra-European partnerships and quotas discussed by the board. The issue is making informed decisions rather than closing exchanges.
4The method on a campus: what changes in practice
The methodology is the same as for any organisation (the ABC’s Bilan Carbone® framework, compatible with the GHG Protocol), but higher education has three specific features that complicate data collection.
Large-scale, decentralised student mobility
For 5,000 to 40,000 students, commuting modes must be reconstructed through surveys, international flights through international relations data and academics’ business travel through expense claims and travel authorisations. No information system centralises all this by default.
A property estate with multiple sites and managers
A university may manage 50 to 200 buildings across several campuses, with energy data dispersed among CROUS (the regional student services body), local authorities, the education authority and internal departments. OPERAT data (Tertiary Decree) provide a good starting point where available. Where a recent energy audit exists, it provides half the estate data: the two exercises complement each other.
Purchasing through public procurement
Public contracts segment purchasing differently from private-sector accounting. CPV codes do not match Bilan Carbone® emission categories. Budget lines must be reprocessed against Base Empreinte® emission factors. The logic is the same as for a university hospital’s climate strategy: map the multiple managers before measuring.
In practice, a first complete exercise takes 4 to 6 months. Data collection accounts for 60 to 70% of the time and determines the quality of the result. An institution that has structured its data beforehand (OPERAT reporting completed, recent mobility survey, clean purchasing information system) saves two months.
A sector-specific advantage is students as a data collection workforce. Several major engineering schools structure student participation through supervised projects (groups of 4-6 students over a semester, supervised by a lecturer and an external consultant). The deliverable is a professional-quality footprint, and students acquire an operational skill.
5The pitfalls of first assessments
Institutions starting their first Bilan Carbone® encounter recurring pitfalls. Three account for most mistakes.
At a science university, laboratories can account for 30% of the footprint
Four sources account for most emissions: none emerges unless someone gathers the laboratory data.
Delegating solely to the estates or sustainability department
The main pitfall. A Bilan Carbone® led by a project officer without an executive committee mandate produces a report nobody reads. The process must be sponsored at governance level (presidency, central administration) to secure data access and lead to decisions. Without political backing, there is no action plan.
Building the footprint without connecting it to OPERAT
Building energy consumption data feed both OPERAT reporting (Tertiary Decree) and the Bilan Carbone® (scopes 1 and 2). Running the two exercises in parallel without connecting them doubles data collection and risks inconsistencies. The logical order is to structure energy data for OPERAT first, then feed them into the Bilan Carbone®.
Underestimating research
At a science university, laboratory activities (specialist gases, -80°C freezers, high-performance computing servers, chemical consumables) can account for 15 to 30% of the footprint. This source is hidden in dozens of dispersed purchasing lines and only emerges if someone seeks out laboratory data. Without a network of leads in research teams, it remains invisible and distorts the footprint. Computing servers deserve the same treatment as laboratory benches: the footprint of high-performance computing and AI can be measured source by source like everything else.
6Measures by decision horizon
Measures are classified by time horizon and decision-making level. Some deliver results within months; others require major investments over 10 to 20 years.
Where to start, according to your resources?
Choose your situation: the relevant actions come to the foreground, with their reduction, cost and required decision-making level.
Quick measures (less than a year)
Catering: increase vegetarian menus beyond the EGalim minimum of one per week; targeting 2 to 3 per week reduces food emissions by 20 to 40%. Tackling waste (weighing waste, adjusting portions): -15 to -25% of food purchases. IT purchasing: extend computer replacement cycles from 4 to 7 years (-30 to -50% for hardware), use refurbished equipment throughout administrative workstations. Travel policy: remove domestic flights and stop reimbursing flights for journeys taking < 4 hours by train.
Structural measures (1 to 5 years)
Commuting: an employer mobility plan (sustainable mobility allowance, cycle allowance, organised car sharing, negotiating public transport services with the local authority). On a suburban campus, reducing car use from 60% to 30% halves daily mobility emissions. International mobility: rationalise rather than eliminate it, favour long stays (one semester versus three short stays), direct European mobility towards rail and develop digital partnerships with distant universities. Documented reductions of 20 to 30% without affecting rankings.
Long-term measures (5 to 20 years)
Energy renovation: an Energy Performance Contract (CPE in French) allows a private operator to fund works and recover the cost from energy savings over 10 to 20 years. Several universities (Lille, Grenoble, Montpellier) have initiated CPE contracts for 30 to 50 buildings, targeting -30 to -50% energy consumption. Property master plan: public universities must produce an SDIA incorporating an energy transition component. This document schedules renovations over 15 to 20 years in line with the Tertiary Decree.
A Bilan Carbone® led by management but informed by 200 student contributors is worth a thousand times more than a consultant’s report left in a drawer. It is also an excellent educational tool.
7What it costs and who funds it
Budgets vary with the institution’s size and the ambition of the scope. Indicative orders of magnitude for a first complete exercise (scopes 1, 2, 3). To compare these amounts with the wider market, Bilan Carbone® price ranges also apply to higher education, and the price simulator provides a tailored estimate in 3 minutes.
- Single-site school or IUT (< 3,000 students): €15,000 to €30,000 excl. VAT, 3 to 4 months
- Single-campus grande école (3,000-8,000 students): €25,000 to €50,000 excl. VAT, 4 to 6 months
- Multi-site university (> 15,000 students): up to €50,000 excl. VAT, 6 to 9 months
- Additional transition plan: + €20,000 to €50,000 excl. VAT
Available funding. Public institutions draw on State-Region planning contracts, France 2030 allocations, MESR (Ministry of Higher Education and Research) ecological transition calls for projects and the Public Action Transformation Fund. Private institutions eligible as SMEs can access Diag Décarbon'Action (the carbon footprint programme) from Bpifrance (the French public investment bank), which funds 40% of a €10,000 excl. VAT package (remaining cost: €6,000 excl. VAT). The complete overview of funding for a footprint assessment is updated scheme by scheme.
8The 2026 framework: BEGES, Tertiary Decree, labels and rankings
The framework has tightened gradually, and 2026 is the year everything converges: the regulatory obligation, accreditations, rankings and access to funding point to the same prerequisite, a recent, complete, published footprint.
What is mandatory, what is strategic
Four milestones frame an institution’s approach: click for details.
Every public institution with more than 250 staff and every private institution with more than 500 employees must publish a BEGES covering scopes 1-2-3 on the ADEME platform (Decree No. 2022-982). The fine reaches €50,000, and above all, a missing file blocks public funding.
Compliance: BEGES and the Tertiary Decree
The mandatory BEGES applies to any public institution with more than 250 employees (Decree 2022-982) and any private institution with more than 500 employees. Publication every three years on the ADEME (the French Agency for Ecological Transition) platform, with fines of up to €50,000. The Tertiary Decree simultaneously requires a -40% change in building energy consumption in 2030 (on any campus > 1,000 m²). Bilan Carbone® data feed directly into OPERAT reporting.
Accreditations: EQUIS, CTI and the DD&RS label
EQUIS has required a formalised, measurable CSR policy since 2023. Since 2022, the CTI has included a criterion requiring students to be made aware of environmental issues. The DD&RS label assesses institutions on environmental management and climate governance. The MESR’s ESR Climate and Biodiversity Plan (2022) sets a sector-wide objective of climate approaches becoming universal. Without a recent Bilan Carbone®, none of these frameworks can be satisfied.
Attractiveness: rankings and students’ choices
Rankings now incorporate climate criteria (Times Higher Education Impact Rankings, national CSR rankings). More directly, students in 2026 choose their school partly on its environmental credibility. The Accord de Grenoble, signed by more than 100 institutions, commits them to publish a footprint and reduction pathway, a strong signal increasingly becoming an expectation rather than an advantage.
Funding: CPER, France 2030 and calls for projects
State-Region planning contracts, France 2030 allocations and MESR ecological transition calls for projects increasingly make funding conditional on a structured carbon assessment. An institution without a recent footprint closes off funding opportunities.
9Key takeaways
The Bilan Carbone® in higher education has moved beyond a communications exercise: it determines regulatory compliance (BEGES, Tertiary Decree), accreditations (CTI, EQUIS, HCÉRES), access to public funding and increasingly student recruitment. The keys to success are:
- Mobility represents 40 to 60% of the footprint, the dominant and most political source. Excluding it for fear of debate produces a useless footprint.
- Scope 3 accounts for 85 to 95%: a footprint limited to scopes 1 and 2 is worthless in higher education.
- Quick measures exist: catering, IT purchasing and travel policy. There is no need to wait for major renovations to act.
- Students are a unique resource: no other sector has thousands of motivated, methodical contributors working as part of their course.
- Connecting OPERAT and Bilan Carbone® saves two months and avoids duplicating collection of energy data.
Institutions starting now will be ready for the next BEGES renewal, the Tertiary Decree’s 2030 milestone and the next accreditation rounds. Those that wait will have six months to do eighteen months’ work. The good news is that the route is established, funding exists and students are eagerly waiting for this. Get started!
10Where to start: the 3-step plan
We have supported dozens of institutions like yours. They all start here, in this order, over fifteen days, before signing anything.
Step 1 - Check which funding scheme applies. If you are a private institution with fewer than 500 employees (business school, chamber-affiliated engineering school, EESPIG group), Diag Décarbon'Action is designed for you: 40% funded by Bpifrance and ADEME, with €6,000 excl. VAT remaining for a complete Bilan Carbone® and action plan. If you are a public institution (university, public grande école, EPSCP), the Diag does not apply, but other schemes take over: MESR ecological transition calls for projects, State-Region planning contracts, France 2030 and the Public Action Transformation Fund. Five minutes checking eligibility avoids paying the full price or missing earmarked funding.
Step 2 - Contact a consultant familiar with higher education. A specialist who can interpret BIRI/DAIE international relations data, understands a property master plan, has already handled international student mobility and knows OPERAT and the ESR Climate Plan, rather than a generalist handling their first school. The sector has specific features: 85 to 95% scope 3, academics to engage and students to involve in collection. A first 30-minute discussion is enough to establish scope, connections with your current obligations (BEGES, Tertiary Decree, OPERAT) and budget. If you are still deciding between software and a consultancy, the SaaS or consultancy comparison sets out the choice directly.
Step 3 - Gather five datasets. 80% of what you need to start is already in your systems: energy bills and OPERAT consumption over 12 months, a campus commuting survey (students and staff), business travel through Notilus or Concur, the purchasing trial balance broken down by category and international student mobility data (BIRI/DAIE). Perfect spreadsheets are unnecessary: your consultant structures the assessment from these. Half a day to gather the exports, and the clock starts.
That is all. No steering committee to convene first, no preliminary assessment to commission, no roadmap to get approved by the governing board. These three steps take ten calendar days and put the institution on track for its first sound footprint assessment.
