How a growing EV cab fleet reduced public charging dependency and built a charging system designed to scale.
It is 6 in the morning. Your driver calls. "The cab isn't charged. The public charger had a queue, and one wasn't working." You have a booking in an hour. The cab is at 30 percent. And you are standing there wondering - why is running an EV fleet this hard?
You made the switch to electric because everyone said it was cheaper. Lower fuel cost. Lower maintenance. Better margins. Nobody mentioned the other side vehicles at the mercy of public charging stations that are occupied, broken, or simply not where your driver needs them.
That is exactly what happened to one cab fleet operating 10 EVs with 20 drivers across day and night shifts. At first, nothing appeared unusual. The fleet was active, bookings were steady, and the vehicles were constantly moving across the city. Drivers charged wherever they could find available public chargers between rides, before shift changes, or late at night after completing trips. It felt manageable because the costs were spread across hundreds of small daily transactions. A few hundred rupees here, another session there. Individually, none of it seemed alarming.
The savings from going electric were real. But they were being eaten up quietly, every day by public charging.
But over time, the business unknowingly began revolving around charging stations instead of customers.
Drivers started planning routes based on charger availability. Vehicles spent productive hours waiting in queues. Some chargers shown as “available” on apps turned out to be occupied or faulty when drivers reached them. And because the entire operation depended on public infrastructure, one failed charging session could disrupt an entire shift. The problem was no longer about electricity. It had become an operations problem.
Where the Fleet Was Losing Money Every Month
When the fleet finally sat down with ZEVpoint to analyse the actual numbers, the scale of the issue became impossible to ignore. The fleet was spending nearly ₹1.8 lakh every month purely on public charging. Not on maintenance. Not on salaries. Not on financing. Just charging. And the surprising part was that the electricity itself was not expensive. The fleet was simply purchasing it in the most expensive way possible.
The fleet operated 10 EV cabs with 20 drivers working across day and night shifts. On average, each vehicle required around 30 kWh of charging every day, enough to cover roughly 150 kilometres of driving. Since the fleet depended heavily on public DC fast chargers, they were paying close to ₹20 per unit for electricity. By the end of the month, the charging bill had climbed to nearly ₹1.8 lakh. After shifting to depot charging using their own commercial electricity connection, the charging cost dropped dramatically to around ₹7 per unit, bringing the monthly expense down to approximately ₹63,000. The result was a monthly saving of nearly ₹1.17 lakh -without reducing operations or vehicle usage.
Based on 30 kWh per vehicle per day. Public rate: ₹20/unit avg. Depot commercial tariff: ₹7/unit.
Why Overnight Depot Charging Changed Everything
That realization shifted the entire conversation. The fleet ran two shifts 6 AM to 6 PM and 6 PM to 6 AM. Between shift changeovers, vehicles sat idle for 30 to 60 minutes. Overnight, when the night shift returned and the day shift had not started, there was a clean 5-to-8-hour window where most vehicles were parked and doing nothing.
For an EV fleet, parked time is charging time.
Once that perspective changed, the solution became surprisingly straightforward. Rather than building operations around public charging availability, the fleet moved charging back to its own depot. Four Polar Pro 7.2 kW wall chargers were installed, not to create a flashy fast-charging station, but to create reliability. Vehicles were plugged in after completing their shifts, and charging sessions were scheduled during lower tariff nighttime hours. By the time the morning shift began, every vehicle was fully charged and ready to leave.
No queues. No searching for chargers. No uncertainty at 6 AM.
The impact of that one operational change was immediate. Within three months, the monthly charging bill dropped from ₹1.8 lakh to around ₹63,000. Drivers no longer wasted productive hours waiting at charging stations. Morning disruptions disappeared. Charging stopped feeling like a daily crisis and became part of the background infrastructure quietly running overnight while the business slept.
Building a Reliable EV Depot Charging Setup
The Polar Pro gave the fleet complete control over overnight charging. Drivers could start, stop, and monitor charging sessions remotely through the app, while scheduling features allowed charging to run automatically during low-tariff hours. The app also provided live visibility into session history, energy usage, and charger status across the depo
Solving Charging Was the First Step to Scaling
Once the fleet no longer felt constrained by charging uncertainty, expansion became far less intimidating. The operator scaled from 10 vehicles to 15 and added a second depot in another part of the city using the same charging model. What initially started as a cost-saving decision slowly became the operational foundation for growth.
Of course, scaling introduced a different challenge. Longer routes, airport transfers, and outstation trips meant some vehicles could not always comfortably return to the depot on a single charge. But this time, the fleet approached the problem differently. Instead of making public charging the backbone of operations again, it became a backup layer.
Drivers were given Dash AIO portable chargers to carry inside their vehicles, allowing them to charge from standard 16A wall sockets during stops at hotels, restaurants, roadside dhabas, and rest points. Suddenly, ordinary stops became opportunities to recover meaningful range. A two-hour meal break could add enough charge for another 40 to 50 kilometres. The charger was no longer tied exclusively to dedicated infrastructure. It travelled with the vehicle itself.
Today, public charging still exists in the fleet’s workflow, but its role has completely changed. It is no longer the primary strategy keeping the business operational. It is simply the fallback option when needed. The real charging system runs quietly every night at the depot while the vehicles are parked and the drivers are off duty.
The Portable Charger That Reduced Long-Route Anxiety
The Dash AIO was built for real-world charging on the move. It works with standard 16A sockets found across India, making it easy for drivers to charge during stops without dedicated infrastructure. The charger supports both 3.5 kW and 7.2 kW output depending on the power supply, allows manual current adjustment for safer charging in different locations, and includes grounding protection for areas with unreliable earthing.
Smart EV Fleets Don’t Just Charge Faster They Charge Smarter
Most EV fleet operators in India are somewhere in the middle of this story right now. The starting point is always the same: put the actual numbers on the table. Your fleet size, your shift pattern, your idle hours. Once that is clear, the right setup becomes obvious and so does how quickly it pays for itself.
ZEVpoint has now deployed more than 24,000 chargers across 630+ cities, helping EV fleets design charging systems around how their vehicles actually operate whether through depot charging, portable charging, or a combination of both. Because for a growing EV business, charging is not just an infrastructure decision. It is an operations decision. And sometimes, a single operational change can completely transform the economics of an entire fleet.
Talk to the ZEVpoint team:
