INTELLIGENT — Billing & Payment Service

Quality (SonarQube Community — live dashboard)

Validation (D5.5 V1)

Billing and payment service of the Horizon Europe project INTELLIGENT (GA 101160678). It covers Task T5.6 and Deliverable D5.5. The software is published under Apache-2.0 so any organisation can run it on their own infrastructure.

Start here for adopters: Public documentation (GitHub Pages) — introduction, deploy-your-own, configuration, adapters, contribute. Source for that site: apps/site (VitePress).

The service turns energy trades settled on a local market into peer-to-peer invoices and payments between community members, then publishes results to a project data space (EWDS).

Status: V1 — target D5.5 at M24 (30/11/2026). Every community runs in virtual mode. The only required real external integration is Stripe in test mode (or your PSP adapter). GSY DEX, EWDS and ECB rates ship with mock adapters (assumption A32).

Billing model — “the producer is the bank”

Documented in the functional architecture and requirements (assumptions A19–A22, business rules BR-01…BR-13):

Rule	Meaning
One invoice per pair	Each consumer→producer pair gets one invoice per period, issued in the producer’s name (self-billing)
Netting	Purchases and sales between the same pair are netted
Threshold	Amounts below a community threshold (e.g. 5 €/CHF) are carried forward; early settlement is possible
Direct payment	Money never transits through the platform — the consumer pays the producer’s Stripe Connect account
Off-invoice grid costs	Grid fees, taxes and levies stay on the supplier/DSO bill (A20) — not on P2P invoices
Market price is final	Billing never recomputes market results or changes a trade status

Architecture at a glance

Five validated views (iterative, each refining the previous):

View	File	Answers
Functional	01-functional-architecture.md	Actors, processes, objects, BR-01…BR-13
Logical	02-logical-architecture.md	Blocks, data ownership, events, jobs
Application	03-application-architecture.md	Modules AC-01…AC-15, APIs, adapters, mocks S1–S13
Technical	04-technical-architecture.md	Decisions TD-1…TD-13, principles TP-1…TP-8
Physical	05-physical-architecture.md	Environments, Scaleway Kapsule (nl-ams), ops

This is the beginning of the README. Read the rest at the original. Read the full README ↗