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Practical guide

Measuring and managing your company's AI:
who can help?

An organisation can calculate its AI footprint in-house to get an order of magnitude. To set usage rules and track them, platforms, specialist services and consultancies offer support, on quotation. Model size and where the computation runs change the footprint by a factor of 10 to 18.

Guillaume Pakula
By Guillaume Pakula, co-founder of Celsius. Since 2019, he has helped 80+ organisations with their Bilan Carbone® and climate strategy.
November 2026
Updated November 2026 · 11 min
An organisation can calculate its AI footprint in-house, as an order of magnitude, with free tools. To track it and set usage rules, AI governance platforms, specialist services and consultancies, Projet Celsius among them, offer support on quotation. The item is still small today. Model size and where the computation runs change the footprint by a factor of 10 to 18, and keeping large models for the requests that need them already cuts it by 40%.
Key takeaways
  • 1An order of magnitude can be calculated in-house, with EcoLogits or Projet Celsius's Base IA.
  • 2The Copilot console counts requests and shows no emissions at all for that usage.
  • 3Offering large models on request only cuts an organisation's AI footprint by about 40%.
  • 4If 5% of requests become videos, the AI footprint is multiplied by 4 to 12.

In 2025, 18% of French companies with 10 or more employees used at least one artificial intelligence (AI) technology, 3 times more than in 2023, according to Insee (the French national statistics office, in French). On measurement, the only published figure covers large groups. In a Capgemini survey published in January 2025 of 2,000 executives at organisations with a turnover above $1 billion, only 12% said they measured the footprint of their generative AI.

AI footprint

Which provider to measure and reduce your AI footprint?

Choose a step: who does it for you, and at what price level.

We convert this usage into electricity, CO2e and cost, team by team. Model size and where the computation runs change the result by a factor of 10 to 18.

For an office-based company, the item is still small, a few kilos of CO2e a year, as our AI Bilan Carbone® calculator shows (Bilan Carbone® being the French carbon accounting method), far behind the purchases and business travel of a first Bilan Carbone®. Measuring it is mainly a way to track its growth. The usage rules that keep it in check take little effort.

1What do you need to count to measure AI?

Measuring an organisation's AI means counting its actual usage, then converting it into electricity, CO2e (CO2 equivalent) and cost. A conventional responsible digital approach, known as Green IT, does not see that usage. It starts from an inventory of devices and data centres, which account for 50% and 46% of the digital footprint in France according to the ADEME study (ADEME being the French Agency for Ecological Transition) of January 2025, and that study does not count generative AI. 3 reasons argue for starting in 2026: usage is multiplying, its nature is changing, and buyers and funders are starting to ask the question.

Usage is multiplying

Companies using AI that analyses written language, the family of ChatGPT, Copilot and Mistral, employed 48% of employees in France in 2025, against 27% a year earlier, again according to Insee. Usage is also changing in nature: an agent, a program that chains dozens of steps on its own, consumes far more than a question, as our article on AI electricity consumption explains.

Legal obligations

Since 2 August 2025, the EU AI Act has required providers of general-purpose AI models to document the energy consumption of their models (Annex XI). It imposes no such requirement on the companies that use them. For those companies, AI goes into the emissions report like any purchase of a digital service, under indirect emissions, as our guide to including AI in your Bilan Carbone® explains.

French local authorities have one more reason. The Territoires d'IA funding window of the Banque des Territoires (in French), opened on 22 May 2026, co-funds 30% to 50% of their AI licences for 1 year. It adds 10% of funding to applications that commit to a frugal AI approach, as defined by the AFNOR framework (AFNOR being the French standards body). Since 1 January 2025, municipalities and groupings of municipalities with more than 50,000 inhabitants must also maintain a responsible digital strategy (in French) that is subject to an annual review.

The 4 pieces of information to count

4 pieces of information make up an organisation's footprint, and they are the same ones used afterwards to set usage rules:

  • Who uses AI, and how often: occasional, regular and heavy users do not weigh the same, and the number of licences says nothing about actual usage.
  • What people use it for: a quick question, a summarised document, a generated image, a video or an hour of a coding agent, with a gap of 1 to more than 1,000 in electricity.
  • Which model: according to the Base IA, Projet Celsius's database of AI impact figures, a large model consumes about 4 times more than a medium model for the same question, and 24 times more than a small one.
  • Where the computation runs: served in France, the same question emits about 11 times less CO2e than with world average electricity, 41 grams per kWh against 458 according to Ember data used by the Base IA.

2Can you estimate your AI footprint without help?

An order of magnitude can be calculated in-house, with free tools and the volumes from the consoles. Setting usage rules also requires knowing which model each team uses, which the consoles rarely say.

An order of magnitude with a public calculator

The EcoLogits calculator, an open tool, estimates the footprint of a volume of queries model by model, with a mode for a whole organisation. Projet Celsius's Base IA publishes its factors by task, from a quick question to an hour of agent work, and our calculator uses them to derive a company's footprint from its headcount and usage. For a first question, "does AI weigh much for us?", these tools are enough. Our article on the carbon footprint of AI gives the orders of magnitude for a query.

Vendor consoles

The Microsoft 365 Copilot usage report counts active users and the number of requests sent. The documentation for the Microsoft 365 emissions dashboard, for its part, states that Copilot is not included. At Google, Google Cloud carbon reporting covers the Gemini API and Vertex AI; Gemini in Google Workspace does not appear in the list of covered services. The consoles therefore give volumes, rarely emissions.

Light grey laptop keyboard: to the right of the space bar, next to the Alt key, one key carries the Copilot logo
The Copilot key on a 2024 Lenovo laptop, to the right of the space bar. The Microsoft 365 Copilot usage report counts active users and their requests, without saying which model answered or where the computation ran. Photo DigitalIceAge, Wikimedia Commons, CC BY 4.0, resized

The 4 most common obstacles

Moving from an order of magnitude to usage rules almost always runs into 4 problems:

  • The consoles count users and requests, rarely the model used, never where the computation runs, and AI used outside the company's tools does not show up.
  • Several tools add up, an office assistant, a conversational assistant, the AI built into business software, each with its own export, units and period.
  • Agents are billed in monthly credits, with no published equivalence in hours of work or in electricity.
  • A measurement does not say what to change. You need scenarios, such as keeping large models for certain uses, and a body to decide between them.

3What does AI without rules cost?

For an office-based organisation, AI currently weighs a few kilos to a few hundred kilos of CO2e a year, a very small share of its footprint. The risks lie in what the item becomes when usage changes, and in what it costs.

The calculation

Electricity used by a task handed over to AI

Choose a task: each step on the scale multiplies by 10.

Footprint = people × tasks per person × electricity of each task × carbon of the kilowatt-hour

One hour of work by a coding agent: 440 Wh, or 1,500 quick questions. In carbon: 200 gCO2e with the world's average electricity, 18 g with servers in France.

Source: Projet Celsius AI Database (v0.3, 2 Nov. 2026), average model, data centre included; electricity: Ember, 2025.

An item that changes scale

An hour of a coding agent emits as much as nearly 1,500 questions to a medium model, according to the Base IA, and a 10-second video clip as much as about 1,100. In the example of a local authority with 1,000 users detailed below, turning 5% of requests into generated videos multiplies the footprint by 4 to 12, depending on clip length.

A cost that follows model size

Large models also cost more. On Anthropic's public price list as at 6 November 2026, a million output tokens costs $0.50 with Claude Haiku 5.5 and $20 with Claude Opus 5.5, from the same generation, 40 times more. Keeping large models for the requests that need them cuts the bill as much as the footprint.

Questions from clients and elected officials

A client asks its suppliers about AI in a climate questionnaire, an elected official wants to know what the tools deployed emit, an executive committee decides on a licence budget. Without a figure specific to the organisation, the answer stays general.

The future size of the AI item will depend above all on the usage rules organisations set now.

4Who offers to measure the AI footprint?

5 families of providers help measure an organisation's AI and set its usage rules, from platforms designed for large groups to free open tools. A trained person can also do part of the work in-house.

AI governance platforms

They are aimed at large companies that deploy many AI systems and want to keep a register of them. Fruggr presents itself as an AI governance platform that maps usage, shadow AI included, and links each cost to a result. Its English page also announces measurement of the carbon footprint of all its AI systems. Its consulting offer adds 8 training courses of 2 to 8 hours, including how to build an AI usage charter. No price is published, and access is through a demo. It is software to deploy, designed for IT, finance and compliance.

An AI platform can also show the footprint to each user. At Orange, the internal Live Intelligence platform shows each employee their carbon footprint in grams and steers them by default towards the lowest-impact models, according to the page on its AI jobs (in French). The display only covers queries made through that platform.

Carbon and responsible digital consultancies

They serve organisations that want to train their teams or assess a specific digital service. Carbone 4 offers a 15 to 20-minute online module on AI and the environment, free for individuals and on quotation for a group. Carbone 4 worked with ADEME on the life cycle assessment of Mistral Large 2, which Mistral published in July 2025 and presents as the first comprehensive assessment of an AI model. Hubblo, which reviewed that study, carries out bespoke life cycle assessments of digital solutions, AI included.

A trainer presents a screen on prompt-writing strategies for AI to a room of participants seen from behind
A generative AI workshop at FemNetzCon, in May 2026. Carbone 4, Fruggr and the Institut du Numérique Responsable publish training on AI and its impact, from a 20-minute module to an 8-hour day. Photo Elena Ternovaja, Wikimedia Commons, CC BY-SA 4.0

Their prices are on quotation. Neither publishes an offer to measure the usage of a whole organisation.

Specialist AI measurement services

They are aimed at organisations that already spend a lot on AI. TokenClimate promises to tell clients what their AI usage costs and what it emits, team by team, then to look for reductions with them, in a monthly report. It targets organisations that spend at least €2,000 a month on AI, and gives its price in writing after a 30-minute call. That threshold rules out most SMEs, and the offer does not cover the Bilan Carbone®.

Projet Celsius

We support SMEs, mid-cap companies (ETI in French) and local authorities, from a few dozen to a few thousand users, that want a defensible figure and usage rules. The engagement follows 4 steps:

  • The diagnostic of actual usage starts from console exports and a short questionnaire to teams, to distinguish usage patterns and the models used.
  • The footprint is calculated by team and by use, with the public, dated factors of our Base IA, which anyone will be able to check once they are published.
  • The usage rules, 3 or 4 of them, are quantified as scenarios, like those in the next section, then tracked in Pilotage IA, the online tool we launched in November 2026. It groups teams by usage pattern, sets the scenarios side by side and produces the action plan and the exports for management or elected officials.
  • The AI item goes into the organisation's Bilan Carbone®, with its other digital purchases, as described in our guide to a company's digital footprint.

The factors that drive our price are set out below. We do not give legal advice on the EU AI Act, and we do not measure servers that an organisation runs itself. Nor do we have a platform that routes queries to a model.

Open tools and frameworks

They suit teams that want to estimate on their own. EcoLogits, backed by the CodeCarbon association, is a suite of open tools that estimate the footprint of generative AI models in use. CodeCarbon measures the energy of code running on your own machines or servers, which is useful for a team that trains or hosts its own models. On method, the AFNOR framework and the RIA31 framework of the Institut du Numérique Responsable (the French institute for responsible digital practices) bring together good practices.

A close-up of an open laptop whose screen shows a terminal full of lines of text
A laptop and its terminal, in 2026. Open tools such as EcoLogits or CodeCarbon can be added in a few lines of code and estimate the footprint of each call to a model. Photo Solijon Solayev, Wikimedia Commons, CC BY-SA 4.0

For images and video, the GenAI footprint alliance, launched on 18 June 2026 by 9 large European companies, including Publicis, AXA, Engie and La Poste, feeds its measurements into EcoLogits and into e-footprint, an open tool hosted by the Boavizta association. All these tools are free. You have to enter the volumes yourself, and none of them says which rules to adopt or how to get them accepted.

A trained person, in-house

In-house work suits organisations that have a CSR (corporate social responsibility) or digital manager available. A trained person reads the consoles, runs a calculator and proposes rules; the Institut du Numérique Responsable MOOC or the Carbone 4 module provide the basics. The cost is limited to time spent. What is missing is the outside perspective of a third party.

5How much do a few usage rules save?

A few usage rules cut the footprint by 40% to more than 90%, and complement the individual habits that our article quantifies one by one. The 2 calculations below come from the Base IA engine, with world average electricity unless stated otherwise.

For an office employee

Take an accountant who hands 865 tasks a year to AI: quick questions, emails, spreadsheets, PDFs, summaries. With a large model and extended reasoning for everything, their year emits 6.0 kgCO2e. With the default setting of a medium model, 378 g. Moving simple tasks to a small model gives 294 g, 20 times less than the heaviest mode and 22% less than the default setting.

For a local authority with 1,000 users

Take a fictitious local authority with a few thousand staff, 1,000 of whom use an AI assistant. Over a year, each hands to AI 300 quick questions, 40 web searches, 20 PDFs to query and 10 summaries of long documents, a total of 370,000 requests. With 30% large models and an unknown computation location, the year emits 252 kgCO2e, about 250 g per user. Agents or images would push this total up, as our calculator shows. This total is also the figure that elected officials and the annual review of the responsible digital strategy expect.

Usage rules

Annual AI footprint of 1,000 users, by usage rule

Each row changes a single rule across the year's 370,000 requests, in kgCO2e.

0 kg50 kg100 kg150 kg200 kg250 kg
Starting point
30% large, 40% medium, 30% small
252.4 kg
Large models on request
10% large, 50% medium, 40% small
152.4 kg-40%
No large model
70% medium, 30% small
120.7 kg-52%
A small model for everything
the same small model for every request
35.4 kg-86%
The same models, served in France
if each model is offered there
22.8 kg-91%
A medium model served in France
2 levers at once: size and location
14.2 kg-94%

Large models on request cut the footprint by 40%. A small model for everything, or computation served in France, brings it down by nearly 90%.

Source: Projet Celsius Base IA, calculation of 6 November 2026, world average electricity according to Ember (11 times less CO2e per kWh in France). Example built on the database factors: 300 questions, 40 searches, 20 PDFs and 10 summaries per user per year.

The first rule concerns model size. Keeping large models for the requests that need them cuts the footprint by 40%, doing without them by 52%, and a small model for everything by 86%. The ranking of the most polluting AI shows the same gaps model by model.

Computation location, images and video

The second rule concerns where the model runs. Served in France, the same models lower the footprint by 91%, because French electricity emits about 11 times less per kWh than the world average. A medium model served in France, which combines size and location, cuts it by 94%. This rule depends on what vendors offer, detailed in our article on so-called eco-friendly AI. The third rule concerns images and video, quantified in the "With images and videos" tab of the figure above: 3% images add 6% to the footprint, while 5% videos multiply it by 4 to 12. Keeping generated video for the teams that need it avoids this change of scale.

OVHcloud's headquarters and data centre site in Roubaix under a blue sky, with its heat extraction chimneys along the boulevard
The OVHcloud site in Roubaix (northern France), in December 2023. A model served from a data centre in France emits about 11 times less CO2e per question than with world average electricity; the photo is unrelated to the providers cited. Photo Velvet, Wikimedia Commons, CC BY-SA 4.0

6How much does an AI diagnostic cost?

No public fee schedule exists for measuring an organisation's AI and setting its usage rules. The open tools and the AFNOR framework are free. Governance platforms, specialist services and consultancies work on quotation, Projet Celsius included.

What drives the price

4 factors make up most of a diagnostic quote:

  • The number of users and teams to distinguish, from a few dozen in an SME to several thousand in a local authority or a group.
  • The number of tools and access to their consoles: a clean export can be read in an hour, scattered usage calls for a questionnaire to teams.
  • The expected deliverable, ranging from a figure for a report to scenarios for an executive committee or a note for elected officials.
  • Tracking over time, from a one-off measurement to a tool updated every year, with the item included in the Bilan Carbone® that is often entrusted to the same consultancy.

Where to start?

For an SME, a mid-cap company or a local authority, we recommend a consultancy that starts from actual usage for the diagnostic and the usage rules, and that is the work we do: the footprint by team, 3 or 4 rules quantified as scenarios, then their tracking in Pilotage IA. The most useful rules are a lighter model by default, large models on request, images and video kept for the teams that need them, and computation served in France where the offer exists.

Other providers suit other profiles better: a large group that wants to keep a register of dozens of AI systems and their compliance will turn to a governance platform, and an organisation that already spends more than €2,000 a month on AI will find a monthly report at a specialist service. A team that trains its own models will measure its servers with CodeCarbon. A legal question on the EU AI Act is a matter for a lawyer. A small organisation that only wants an order of magnitude can stop at the EcoLogits calculator or ours.

7Key takeaways

  • Measuring an organisation's AI means counting who uses it, for what, with which model and where the computation runs.
  • No law requires a company to measure its AI footprint: the EU AI Act targets model providers.
  • Generated video and agents can change the scale of an item that is still small in an office-based organisation.
  • Keeping large models for the requests that need them cuts the footprint by about 40%, and a small model or computation served in France by nearly 90%.
  • Open tools and frameworks are free. Platforms, specialist services and consultancies, Projet Celsius among them, work on quotation.

To gauge the weight of AI in your own footprint before talking to a provider, start with our AI Bilan Carbone® calculator.

Further resources

Frequently asked questions

No. Since 2 August 2025, the EU AI Act has required providers of general-purpose AI models to document their energy consumption, not the companies that use them. For those companies, AI goes into the emissions report as a purchase of a digital service. In France, however, municipalities and groupings of municipalities with more than 50,000 inhabitants must maintain a responsible digital strategy.
A few kilos of CO2e a year for an office-based SME, about 12 kg for 50 people according to Projet Celsius's Base IA, and several tonnes with coding agents or generated video. For a fictitious organisation of 1,000 users that hands 370,000 requests a year to AI (questions, searches, documents), the calculation gives about 250 kgCO2e with world average electricity.
No. The Microsoft 365 Copilot usage report gives the number of active users and requests sent, and the documentation for the Microsoft 365 emissions dashboard states that Copilot is not included. These volumes are a starting point: you need to apply factors by model and by computation location to them.
The EcoLogits calculator, an open tool backed by the CodeCarbon association, estimates the footprint of a volume of queries by model and offers a mode for an organisation. Projet Celsius's Base IA publishes its factors by task and feeds a calculator for companies. CodeCarbon measures code running on your own servers.
Through a few usage rules. Take an example of 1,000 users calculated with Projet Celsius's Base IA. Keeping large models for the requests that need them cuts the footprint by 40%, a small model for everything by 86%, and the same models served in France by 91%. Turning 5% of requests into videos would, by contrast, multiply the footprint by 4 to 12.
There is no public fee schedule: consultancies, specialist services and platforms work on quotation. The price depends on the number of users and teams, the tools and access to their consoles, the expected deliverable (a figure, scenarios, a note for elected officials) and tracking over time. Open tools are free.
or: guillaume@projetcelsius.com

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