Frozen pricing
A single monthly or quarterly average tariff negotiated at signing. When wholesale prices swing, the host or the CPO loses — depending on which way.
Module · Dynamic energy reimbursement
Index reimbursement
to the real energy price.
On every session, the applied purchase rate is the one of the moment — not a rough monthly average. Compatible with variable-rate supply contracts, the de-facto standard on new signings since 2025.
The problem
Fixed tariffs no longer exist — neither does Excel
New electricity supply contracts signed since 2025 are almost systematically variable-rate — EPEX-linked, time-bracketed, or a mix. Reimbursing the host on a monthly average is now a losing game, for one of the two parties, every single time.
Manual monthly calc
The CPO exports sessions, re-enters energy prices into Excel, applies weighted averages. 1 to 2 days a month, plus errors.
Month-end disputes
The host disputes, the CPO recomputes, things drag. With 200 hosts, it's mechanically unsustainable.
The principle
One session, one price, one credit — automatically
Four simple principles that turn energy reimbursement from an admin chore into a native CPMS calculation.
One session = one price
On every session start, Chargekeeper fetches the applicable purchase price at that exact moment, indexed against the host's supply contract. Reimbursement is computed live, not after the fact.
Variable-rate ready
Standard on supply contracts signed with EDF, TotalEnergies, Engie, Eni and peers since 2025. Hourly indexing, spot pricing, prices changing every hour — it doesn't matter: the calculation runs per session.
Source of truth: the OCPP CDR
Energy consumed comes from the Charge Detail Record produced by the charger — raw, non-negotiable data. No estimation, no favourable or unfavourable rounding.
Auditable credit
Each line of the monthly credit lists the session, duration, kWh delivered, applied tariff and formula. The host can trace everything without calling support.
In the UI
Creating an indexed supply contract
Define the supplier, indexing mode (fixed, time-of-use, formula), reimbursement margin, periodicity. Once configured, the computation runs session by session — no intervention needed.
How it works
Four steps from contract to monthly credit
Step 01
Connect the supply contract
On the host record, the CPO sets the indexing mode: fixed tariff per time bracket, hourly spot tariff, EPEX-linked formula or in-house index.
Step 02
Set the reimbursement margin
According to negotiated terms: full pass-through of the purchase price, with a fixed per-kWh margin, or a % margin. Combinable per site, per bracket.
Step 03
Let sessions flow
Each CDR triggers the calculation. The reimbursement journal is consultable in real time, line by line, as soon as a session ends.
Step 04
Generate the monthly credit
On the contract date, the consolidated credit is generated. Exportable as PDF + XLS detail + ISO 20022 transfer ready to upload to the bank.
Who it's for
Built for third-party host models
Hotels, retail, real estate
You host chargers operated by a third-party CPO — and you want to be reimbursed at the fair real price, without renegotiating an addendum every time the energy contract renews.
Operator CPOs
You operate chargers for hosts with variable-rate energy contracts — and you want to stop computing manually each month.
Sites with self-consumption
You have PV or collective self-consumption on site — marginal energy cost changes by the hour and by production. Indexable.
Why it matters
A host relationship that finally runs frictionless
Transparent reimbursement at the fair price is what brings a host partner back for a second and a third site.
100 %
of sessions tracked at the real price
No more rough averages favouring one party over the other.
D+1
visibility on reimbursements
Lines are visible the day after the session, not at month-end.
0
addendum needed
When the supply contract changes, update the indexing — not the CPO–host contract.
Auditable
down to the session
Each credit line is justified by a precise session, a dated tariff, a visible formula.
Are your host contracts going variable-rate?
It's the new standard since 2025. Let's discuss your current model — we'll tell you what to adapt.
Book a demo