OptAI.
As smart as it sounds.
Let AI cut your demand charges for EV charging — automatically.
Cut demand peaks.
Cut charges.
Self-learning algorithms
Predicts the fuse level from charging patterns. And keeps power demand down.
Automatic savings
Cuts demand charges fully automatically. You save 35% on average
Open standard
OptAI works with any OCPP-compatible charger.
For larger properties
Many chargers in one property? Then OptAI delivers. Housing association or business.
When power costs more than energy
Demand charges mean you pay for the peak — not the total. And EV charging builds peaks. Ten cars starting to charge at the same time in the evening can set the whole month’s grid fee.
Many grid operators have already introduced the model. The rest are on their way. Without something that cuts the peak, the bill grows with every new charging point.
| Traditional electricity charge | Demand charge | |
| Measures | Total electricity use | Electricity used simultaneously |
| Most expensive when | You use a lot over time | You use a lot at once |
| EV charging | Low impact | High impact |
OptAI vs load balancing
But what about load balancing? It distributes power between the chargers and cuts peaks too. That helps — but the fuse level can still be higher than necessary, and the demand charges with it.
OptAI takes it further: predicts the property’s needs and lowers the fuse automatically. 35% lower demand on average. The cars still charge fully.
| Load balancing | OptAI | |
| Works on | The chargers | The fuse level |
| Based on | What’s happening now | What’s about to happen |
| Result | More chargers under the same fuse | A lower fuse from the start |
Who benefits from demand charge optimisation?
Housing associations
Housing associations with 10 or more chargers typically see the biggest impact. The evening peak is clear, the charging pattern is predictable — and a lower main fuse translates directly into a lower grid fee for the association.
Real estate owners
For offices, retail, hotels and rental properties, demand charges are often one of the bigger variable costs. OptAI scales well in larger installations — the more charging points, the more there is to optimise.
Businesses
Businesses with their own charging infrastructure — whether it's an office or a depot — get both a lower grid fee and a simpler calculation for adding more chargers without upgrading the fuse..
What's the cost difference?
Savings depend on the grid operator and the charging pattern, but here’s what it can look like. Calculation example based on Ellevio’s demand charge for low voltage 2026 (approx. €7 per kW/month on the average of the month’s three highest peaks) and a realistic concurrency factor for evening charging.
| Property | Peak without OptAI | With OptAI (−35%) | Annual savings |
| Housing association, 10 chargers | 28 kW | 18 kW | ~€900 |
| Housing association, 30 chargers | 75 kW | 49 kW | ~€2,200 |
| Real estate, 60 chargers | 120 kW | 78 kW | ~€3,500 |
We calculate on your actual property and your grid operator’s tariff.
Updated April 2026. Exchange rate may vary. Figures are indicative — we calculate on your actual property.
FAQ about OptAI
OptAI is an add-on service to Waybler’s charging system that automatically optimises the main fuse to minimise demand charges — without compromising on cars being fully charged. It’s especially valuable in properties where demand costs can quickly rise as the grid introduces demand charges.
OptAI analyses historical charging data and future forecasts to find the lowest possible power budget needed to meet the actual charging demand. The algorithm takes into account factors such as the number of charging sessions, average charging demand, connection time and which hours of the day trigger demand charges.
Properties with many charging points or high demand costs benefit the most. For example housing associations, office buildings or parking facilities with high occupancy.
Savings vary depending on the grid operator and the property’s conditions. But on average, OptAI cuts demand by around 35% — which translates to significant cost savings for the customer.
No, OptAI can be used with or without a power meter. With property-level metering the optimisation becomes more precise, but even without a meter the system can calculate an effective current budget based on usage patterns.
OCPP (Open Charge Point Protocol) is the industry standard for communication between charger and charging service — found in most modern chargers
Get started with OptAI
- Contact us and describe your property.
- We calculate the savings and present the insights.
- You approve and we connect it.
- You're up and running with OptAI.