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Digital sobriety and proof
A sustainability network must measure and prove its own sobriety. This page publishes our dated annual footprint, its calculation methodology, our page weight budgets and the full application of the French general ecodesign framework (RGESN).
Figures recorded from European hosting and from the matching engine call accounting.
Total annual footprint
24.03 kg CO2e / year
europe-west1 (Belgique / France)
European hosting
23.78 kg CO2e / year
410 kWh / year (58 g CO2e / kWh)
Engine calls
0.25 kg CO2e / year
180000 calls / year (24 Wh / 1,000 calls)
Volume processed by the engine
42.5 GB / year
2026-10-14
No vague estimates: every item relies on an explicit formula checked by an automated test.
The continuous integration pipeline fails if any single page exceeds 80 KB or 12 requests.
| Public page | Measured weight / cap | Measured requests / cap | Status |
|---|---|---|---|
Home and living map /[lang] | 12 KB / 80 KB | 4 / 12 | Within budget |
World map and zoom mode (RC0) /[lang]/carte | 21 KB / 80 KB | 4 / 12 | Within budget |
Sources and licences register /[lang]/sources | 36 KB / 80 KB | 4 / 12 | Within budget |
GDPR processing register /[lang]/confidentialite | 16 KB / 80 KB | 3 / 12 | Within budget |
Transparency, evidence and rules /[lang]/transparence | 13 KB / 80 KB | 3 / 12 | Within budget |
Standard data agreement with clusters and territories /[lang]/transparence/convention-territoires | 9 KB / 80 KB | 3 / 12 | Within budget |
Ecodesign and annual footprint /[lang]/ecoconception | 13 KB / 80 KB | 3 / 12 | Within budget |
Profile and affiliations /[lang]/identite | 12 KB / 80 KB | 3 / 12 | Within budget |
First pilot cluster and public demonstrator launch (RL2, RL4) /[lang]/lancement | 18 KB / 80 KB | 3 / 12 | Within budget |
Living design system /[lang]/charte | 13 KB / 80 KB | 3 / 12 | Within budget |
Each criterion of the general ecodesign framework for digital services is linked to the proof file that holds it in the repository.
12 criteria shown
Strategy
Usefulness and functional sobriety assessed through the eight-question test and the fourteen rules.
Proof: src/gouvernance/invariants.ts
Strategy
Annual publication of the hosting and engine environmental footprint with its methodology.
Proof: src/domaine/ecoconception.test.ts
Specifications
Strict page weight (80 KB) and request (12) budget, automatically checked in the CI pipeline.
Proof: scripts/verifier_budget.mjs
Architecture
Shared storage in PostgreSQL with pgvector without an additional dedicated graph server.
Proof: docs/decisions/RF8_STOCKAGE_GRAPHE.md
User experience and interface
Animations capped at 320 ms and automatically disabled when the user prefers reduced motion.
Proof: src/app/charte.test.ts
User experience and interface
Exclusively vector illustrations (SVG) with no auto-playing video or carousel.
Proof: src/components/site/graphe-vivant.tsx
Content
Two Latin-subset variable fonts with immediate fallback text rendering.
Proof: src/app/[lang]/layout.tsx
Frontend
Zero cookies, zero ad trackers, zero third-party analytics scripts.
Proof: src/gouvernance/balayages.test.ts
Frontend
Server rendering by default to minimise CPU load on the client device.
Proof: src/app/[lang]/pages.test.tsx
Backend
Graph traversal bounded to three cycle-free hops to prevent runaway computation.
Proof: backend/tests/domain/test_stockage_graphe.py
Hosting
Hosting in a low-carbon European region (europe-west1).
Proof: backend/tests/api/test_main.py
Engine and algorithms
Pure deterministic matching engine favoured over energy-heavy bulk calls.
Proof: backend/tests/reference/test_pertinence.py