Introduction: The Illusion of Raw Power
The advertising around “megawatt” chargers makes drivers dream. A 10‑minute boost is enough to add hundreds of kilometres to a compatible electric vehicle. Yet, according to a recent Kempower white paper, the installed power is not the decisive factor for a station’s profitability.
This document, based on North American data extracted from the ChargEye platform, reveals that adding ports—even low‑power ones—significantly increases usage and revenue. Let’s dive into this surprising analysis that challenges the myth of “the more powerful, the better”.
1. The Link Between Number of Ports and Usage
The study shows that charging point density directly influences utilisation rates. A station with eight ports has a three‑times higher utilisation rate than a more powerful but less equipped station.
This correlation is explained by increased availability: drivers find an open port faster, reducing wait times and increasing the number of sessions completed daily.
Impact on Return on Investment
More ports mean more revenue. Even if each port delivers fewer kW, the frequency of charges largely compensates for the reduced power. Operators thus see their ROI move closer to 12‑18 months rather than 24‑30.
2. Comparing 100kW and 400kW Stations
The white paper’s graph shows a modest rise in utilisation, from 3% to 5%, when moving from 100kW to 400kW. In contrast, increasing the number of ports from two to eight doubles usage.
The cumulative effect demonstrates that installed power has a marginal impact compared to charging point density.
3. The Logistical Advantages of a Dense Station
Installing several small chargers is often more economical and flexible. They require less cabling, reduce maintenance costs, and allow for progressive upgrades without total service interruption.
Moreover, modularity facilitates adaptation to changing user needs and technological evolution (e.g., integration of ultra‑fast charging).
Smart Management via ChargEye
Kempower offers a management software that optimises port allocation in real time, maximising availability and revenue.
- Continuous monitoring of utilisation rates
- Proactive alerts on anomalies
- Detailed reports for financial optimisation
4. Economic Implications for Operators
An economic model based on volume rather than power reduces initial investment while maintaining an attractive margin.
The study indicates that an 8‑port station can generate up to 25% additional revenue compared to a similarly sized but less dense configuration.
5. How to Plan Your Charging Network
To maximise efficiency, start by analysing user flow at your site. Identify peak periods and size port density accordingly.
Also integrate a dynamic management system to adjust availability based on real demand, as proposed by Kempower.
Conclusion: Opt for Density, Not Just Power
Kempower’s analysis clearly demonstrates that the success of a charging station hinges on the number of available ports. By investing in higher density, operators can improve utilisation, increase revenue, and offer a more reliable service to electric drivers.
Ready to rethink your charging strategy? Contact our experts to design a solution tailored to your needs and maximise your return on investment.
