The connection says no
Thirty vans charging at full power can exceed a depot's grid connection. Upgrading it is expensive and can take a long time, which stalls the next round of EVs.
In development · talking to fleet operators in NRW
Charge more vehicles on the grid you already have.
ChargeProof is smart charging and energy verification for commercial EV fleets. We schedule every charging session around departures, grid limits and electricity prices, and prove every kWh and every euro saved with audit-ready data.
The problem
01 · The grid wall
02 · Peak charges
03 · Unprovable numbers
Fleets are going electric faster than depots can be connected.
When a shift ends and every vehicle plugs in at once, a depot hits a peak it was never built for. That one moment drives the cost of the whole electrification project.
One peak, a full year of cost
For many commercial connections, the highest 15-minute peak sets the demand charge (Leistungspreis). A single unmanaged evening can lock in a high bill for the year.
Savings nobody can audit
Energy tools report averages and estimates. Finance teams preparing CSRD reports need figures they can trace back to the meter, with a documented method.
How it works
Four steps, no new hardware in the vehicles.
ChargeProof sits on top of the chargers and meters a depot already has, and turns their data into a charging schedule and a verifiable record.
-
Connect
Link chargers via OCPP, the open standard most commercial chargers support, plus the depot's grid meter. Telematics and departure plans are optional inputs.
-
Optimize
Schedule each session around departure times, the connection limit, electricity prices and low-carbon hours, so every vehicle is ready and the peak stays down.
-
Prove
Measure every session against a documented baseline. Raw meter data is stored unaltered and reconciled against the depot meter.
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Report
A live dashboard per depot, a monthly report for finance, and an export mapped to CSRD climate disclosures (ESRS E1).
Product
One platform, three layers.
Fleets start with optimization and proof. Flexibility comes once enough depots are connected.
Core
Optimize
Smart charging that respects the grid limit and the route plan.
- Departure-aware scheduling
- Dynamic peak limit per depot
- Price- and carbon-aware charging windows
Core
Proof
Measurement, reporting and verification for energy, cost and CO₂.
- Per-session kWh, cost and emissions
- Savings vs. a documented baseline
- CSRD-ready export and audit trail
On the roadmap
Flex
Turning connected depots into a flexible grid resource.
- Pooling depots into a virtual power plant
- Flexibility revenue via market partners
- Compliance credit add-on (THG-Quote)
Proof & MRV
Proof, not promises.
Built by a founder from finance and accounting, ChargeProof treats every number like a figure in an annual report: it needs a source, a method and an audit trail.
Data sources
Chargers (OCPP)Sessions, meter values
Depot grid meter15-min load profile
Prices & tariffsDay-ahead and contract
Emission factorsAnnual and hourly grid
Store
Raw data layerAppend-only, UTC, hashed for tamper evidence
Check & calculate
Quality checksGaps, duplicates, reconciliation vs. depot meter
Calculation engineVersioned method, baseline vs. optimized
Outputs
DashboardPer fleet and depot
Monthly reportMethod version on every page
CSRD exportESRS E1 energy and emissions
Audit trail: every reported number drills down to raw meter records, run ID and methodology version.
Principle 1
Published methodology
Boundaries, baselines, formulas and data sources are written down and versioned. Changes are logged, never silent.
Principle 2
Conservative by design
Where data is missing or uncertain, we choose the option that understates savings. Under-claiming beats correcting later.
Principle 3
Independent review
We plan to have the methodology reviewed externally before the first pilot results are published.
Savings = Baseline (unmanaged charging, same sessions) − Actual (optimized charging)
measured per session, for: kWh shifted · kW peak · € cost · kg CO₂e
measured per session, for: kWh shifted · kW peak · € cost · kg CO₂e
IPMVPGHG Protocol Scope 2ISO 50015ISO 14064-3ESRS E1OCPP / OCMF
Who it's for
Built for depots, read by finance.
Any commercial fleet that charges at its own site, from 10 vehicles upward.
- Logistics & parcel delivery
- Care and social services
- Trades & field service
- Municipal fleets & Stadtwerke
- Bus and shuttle depots
- Car sharing & rental
Fleet manager
Vehicles ready on time
Departure plans come first. Charging fits around the routes, not the other way round.
Facility & energy manager
No overloaded connection
Stay under the grid limit and postpone, or avoid, a costly connection upgrade.
CFO & sustainability
Numbers that hold up
Energy, cost and emissions data with a method and audit trail, ready for CSRD reporting.
Business model
We earn when the fleet saves.
Simple, recurring and aligned with the customer's result.
Subscription
SaaS per charge point
A monthly fee per connected charge point for optimization, dashboard and reporting.
Gain-share
Share of verified savings
An optional model where part of our fee is a share of the savings, measured against the baseline. No savings, no fee.
Add-ons
Reporting & flexibility
CSRD reporting packages, compliance credit handling and, later, a share of flexibility market revenue.
Pilot program
Become one of our first pilot fleets.
We are preparing pilots with fleets in North Rhine-Westphalia. A pilot is free and runs for three months.
What you get
- A baseline analysis of your depot's current charging and peak load
- Three months of optimized charging
- A monthly report on energy, cost and CO₂ your finance team can use
- Success metrics agreed with you before we start
What we need
- 10 or more EVs charging at one depot (or planned within 12 months)
- Chargers with OCPP access, or a charge point operator who can provide it
- Access to the depot's grid meter data
- About 30 minutes a month for a review call
Roadmap
Where we are, and what comes next.
ChargeProof is an early-stage project and not yet an incorporated company. Here is our honest status.
- Now
Methodology & MRV engine
Writing the methodology and building the data pipeline and calculation engine.
- Next
Validation
Testing the full pipeline on open charging data and a simulated depot.
- Then
First pilot fleets
Three-month pilots with fleets in NRW, results published with permission.
- Later
Independent review & scale
External methodology review, then rollout across Germany and the EU.
- Future
Flex
Pooling depots to offer flexibility to the grid.
Team
Finance meets energy.
Nguyen
Founder
Background in accounting principles, financial reporting and data analytics (SQL, Python, Power BI). MSc in Economics, University of Cologne; MBA Essentials, LSE. Leads the MRV methodology, audit-ready reporting and customer pilots.
Technical co-founder
Open role
We are looking for an engineer with experience in energy systems, OCPP or optimization to build the charging engine with us. Get in touch.
FAQ
Questions fleets ask us.
Do we need new hardware?
No new hardware in the vehicles. ChargeProof works with chargers that support OCPP, which most commercial chargers do, and with the depot's existing grid meter data.
Will our vehicles still be ready on time?
Yes. Departure times are a hard constraint. The schedule only moves charging within the window each vehicle is parked.
Is ChargeProof a carbon credit business?
No. Our core product is smart charging and verified energy data. Emissions are part of every report, and compliance credits such as the German THG-Quote can be an add-on, but they are not the reason to use ChargeProof.
How do you handle our data?
Charging sessions can be linked to drivers, so we treat them as personal data under GDPR: we sign a data processing agreement, store only what the reporting needs, and host in the EU.
What does it cost?
Pilots are free. After that, pricing is a monthly fee per charge point, optionally combined with a share of verified savings. We share pricing once we understand your depot.
Which fleets are a good fit?
Fleets with 10 or more EVs charging at their own depot, or planning to, especially where the grid connection is already tight.