Call comes in
24/7. The Voice AI
answers within seconds, in
the caller's language.
An end-user at a wallbox that will not start. An installer with an OCPP question. A customer chasing a warranty case. In EV charging, they pick up the phone, and that line is expensive to run well. Three things make it hard:
“AI handles the volume. Our people handle the rest. And in between, something happens that no one else does: every interaction makes your operation smarter.”
Joe Voice AI takes care of the volume. Salesupply’s native customer service employees handle the
exceptions. One team, one set of SLAs, one line your end consumers call. The solution is phone first. Email, WhatsApp, chat and social can be added later on the same team and dashboard.
| Voice AI: Handles up to 80% of calls 24/7 | Human Agents: For calls that need a person |
|---|---|
| Developed for the energy - and charging market | Native customer service employees, 25 languages |
| Resolves routine questions autonomously, in the caller's language | Complex, sensitive and high-value calls: warranty, complaints, installers |
| Recognises when a human is needed and hands over with context | Warm handover, so the employee sees what the bot already did |
| Closes every call as a ticket: intent, summary, resolution | Weekly QA on call quality, brand tone and resolution. |
The technical side is more specific
The right answer often depends on live session data, the status of the charge point, roaming between networks, the driver’s charge card and billing logic a generalist support team has never seen before.
The human side has never mattered more
An end-user stuck at a charge point at night that will not work does not want a standard answer. They want a solution. As the hardware becomes a commodity, the experience on the line is what sets operators apart.
Most AI agents in EV charging connect only to the technical layer of the charge point. They can
restart a charger, but they cannot identify the caller and cannot answer a question about a contract, a charge card, a tariff or an invoice. Those questions are a large share of call volume.
Joe by Plugz is different. Plugz spent five years in charging infrastructure before building Joe in the Netherlands. Joe by Plugz is an AI voice agent for EV charging support that also monitors the charging network. Joe connects across every layer, from charge point to charge card to user and CRM, and during the call it takes real action:
✓ Resets a charger or unlocks a stuck cable
✓ Ends a stalled session
✓ Directs the end-consumer to a nearby charge point that does work, with navigation.
✓ Identifies the caller and answers contract, tariff and invoice questions
✓ Monitors the charging network continuously, often resolving faults before anyone calls.
Every call ends as a closed ticket
Four steps, one system. The knowledge base grows with every closed call, so the bot gets faster
every week.
| Generic voice AI | Salesupply x Joe |
|---|---|
| ✕ Connects to the charger only. | ✓ Connects across charge point, charge card, user and CRM. |
| ✕ Can restart a charger. Cannot answer a billing or contract question. | ✓ Resets and unlocks, and answers contract, tariff and invoice questions. |
| ✕ No human escape path, the caller is stuck when the bot is. | ✓ Complex, emotional calls always reach a native employee. |
| ✕ Speaks generic FAQ language. | ✓ Trained on your chargers, models and terminology, not generic FAQ. |
| ✕ Static. The same performance month after month. | ✓ Every closed ticket trains the bot: handling time falls as it learns. |
| ✕ A call, then nothing. | ✓ Every call closes as a ticket in your system, with intent and resolution. |