Backend lock-in
The contract keeps running, promised features never arrive – and switching is considered too risky internally. So everything stays as it is: the vendor sets the pace, not your operation.
For operators
Charging operations you own.
Whether you run a depot, a public charging network or a municipal utility: we make sure your operation never depends on a single backend vendor – with consulting, proven building blocks and zero-downtime migration.
Where it hurts
Six problems operators tell us about again and again.
Regardless of size, backend or site model, these are the patterns we hear in almost every conversation with operators.
Outages & support blind spots
A charge point goes down – but is it the hardware, the backend or the grid? Without your own view into the OCPP traffic, all you can do is file a support ticket. And wait.
Calibration law & AFIR pressure
Billing under German calibration law (Eichrecht), AFIR requirements, ISO 15118: the bar rises faster than some vendors deliver – and in the end, you are the one held accountable.
Rising cost per charge point
With every charge point, the monthly bill grows – often faster than revenue. Pricing models change, and without a credible option to switch, you negotiate from a weak position.
Data ownership
Charging sessions, utilisation, faults: your operational data lives with the vendor instead of with you. Analytics, integrations and any future switch become a matter of negotiation.
Growth & complexity
More sites, more hardware brands, more edge cases: what worked at one location does not scale by itself – and every new device brings its own firmware quirks.
Operator types
Three operations, three starting points – one team.
Depots & fleets Charge buses and trucks to schedule – reliably and within budget.
Charging aligned with duty rosters, load management on a limited grid connection, and
operation even without a permanent cloud link. Case study: the WALL-E platform for fleets.
Public CPOs Roaming, ad-hoc payment and availability across a public network.
Public charging needs stable sessions and a backend switch without a cut-over date.
See how zero-downtime migration works.
Municipal utilities & energy providers Compliant billing and your own infrastructure under your own brand.
Your own platform instead of a third-party backend – managed in your cloud on request.
Case study: DepotCharge.
Operations under control
Load management that respects your grid connection.
Overnight depot charging or a midday peak: our load management keeps the site below the connection limit, prioritises by departure times and uses PV surplus whenever it is available – from the cloud or locally on site.
Charging site load · 24 h
How we start
From first conversation to live operation – in three steps.
1 · Assessment Workshop
One working day via Microsoft Teams at a fixed price: we review your installed base,
contracts and architecture. You then get 90 days of full access to a demo instance with all building blocks.
2 · Pilot / PoC
At a real site, with your charge points: critical assumptions are validated in live
operation before you invest.
3 · Implementation & operation
Zero-downtime migration, then steady-state operation – as SaaS, on-premises or with a
handover to your team.
Case studies
Operators who have already made the move.
WALL-E runs a multi-tenant CPMS platform on our building blocks – scaled to more than 8,000 charge points. DepotCharge attaches billing and high-power chargers to existing backends through the OCPP Broker. Our case studies show how these projects play out.
Zero-downtime migration
The way out of lock-in is not a big bang.
The OCPP Broker keeps every charge point connected while the backend behind it changes – per charge point, per group or per site. Active charging sessions carry on, and the way back stays open at all times.
- Shadow connection and parallel comparison operation
- Switch-over during live operation, no cut-over date
- Rollback per charge point at any time
We build charging-infrastructure software for companies including:
BMW · Volkswagen · DEKRA · Webasto · Allianz · Audi Denkwerkstatt · WALL-E.works · DepotChargeFAQ
Common questions from operators.
Can we keep our existing backend?
Yes. The OCPP Broker decouples your charge points from the backend – your current system stays in charge for as long as you want. Switching becomes an option instead of an obligation: you decide if, when and for which sites you move.
What does it cost to get started?
The predictable way to start is the Assessment Workshop at a fixed price of €4,990 plus VAT. In one working day via Microsoft Teams we review your installed base, contracts and architecture and deliver a solid basis for decision-making. It includes 90 days of full access to a demo instance with all building blocks; after that, the decision is yours with no obligation to implement.
Do you also operate it for us?
Yes. You choose the operating model: run by us as SaaS, on-premises on your own infrastructure – or we build it up and hand it over to your team, including source code, documentation and onboarding.
Next step