Utility fleets need enough vehicle capacity to respond when service demands increase, equipment goes down, or unexpected fieldwork arises. But maintaining extra vehicles “just in case” can create years of unnecessary acquisition, maintenance, insurance, depreciation, and replacement costs.
The challenge is separating capacity that is genuinely mission-critical from vehicles that could be shared, reassigned, rented during peaks, or removed altogether. For electric, water, energy, and other utility fleets, the right-sizing goal is not to minimize vehicle count. It is to maintain the least costly fleet that can still respond reliably when crews need it.
Key Takeaways
Utility fleets often operate a more diverse vehicle mix than a typical office-based motor pool.
Assets may include:
Some of those vehicles are directly tied to specific field functions.
Others primarily provide transportation.
That distinction matters.
A lightly used specialized truck may still be essential because no other asset can perform its job.
A lightly used sedan assigned to one administrative department may have several substitutes elsewhere in the fleet.
Applying the same utilization threshold to both can lead to poor decisions.
Agile Fleet’s utilization guidance emphasizes comparing vehicles by class, mission, location, and actual operational demand rather than treating the entire fleet as one homogeneous group. Read How to Run a Fleet Utilization Audit and Right-Size Your Fleet Without Disrupting Service now.
Before deciding whether the fleet is too large or too small, classify vehicles according to how the organization depends on them.
These are vehicles whose unavailability could directly interrupt essential field operations.
Examples may include assets supporting:
The important question is not simply:
“How often is this vehicle used?”
It is:
“What happens when we need this vehicle and it is not available?”
If the consequence is a serious service disruption and no practical substitute exists, maintaining spare or lightly used capacity may be justified.
These vehicles support normal work but may have more flexibility.
Examples might include:
These are often stronger candidates for:
This part of the fleet usually offers the greatest right-sizing opportunity.
Some vehicle needs are genuine but occur only during:
These needs should be measured separately from daily recurring demand.
A utility should not automatically purchase permanent assets to solve a problem that exists for only several weeks each year.
1. Is the Vehicle Truly Mission-Critical?
Start with the operational purpose.
Ask:
The stronger the operational consequence, the stronger the case for maintaining dedicated capacity.
But avoid defining every vehicle as mission-critical simply because its users prefer dedicated access.
A true mission requirement should be explainable in concrete operational terms.
Review a full operating cycle whenever possible.
Measure:
Suppose a utility maintains five additional pickups because crews occasionally need them during large projects.
If all five are needed every month, that may support permanent capacity.
If they are needed only during two scheduled projects per year, temporary rentals or transfers may be more economical.
The decision should be based on frequency, not possibility.
Large utility fleets may operate across several facilities or service territories.
That creates a common problem:
One location believes it needs another vehicle while a similar vehicle is underused somewhere else.
Before purchasing, review:
Ask whether the vehicle could be:
Fleet-wide visibility can reveal capacity that local managers may not know exists.
Read How to Maximize Vehicle Utilization Across Multiple Locations for more on balancing demand across sites.
4. Is the Vehicle Assigned When It Could Be Shared?
Utility fleets often have vehicles dedicated to:
Some assignments are necessary.
Others may exist largely because the vehicle has historically belonged to that group.
Assigned general-purpose vehicles deserve particular attention when they show:
Opening appropriate vehicles to broader users can increase capacity without adding vehicles.
A shared motor pool can spread fixed ownership costs across more productive activity while preserving access for approved drivers.
Agile Fleet’s utility fleet resources specifically position shared motor pools as a way to improve utilization and right-size mixed utility fleets. Check it out here: Utility Fleet Management Software
A utility may appear to need more vehicles when the real problem is availability.
For example:
The organization owns 20 suitable pickups.
But four are regularly out of service.
Operationally, the fleet has closer to 16 available.
Before purchasing another vehicle, review:
If high-demand vehicles are frequently unavailable because of age or reliability, replacement may make more sense than fleet expansion.
Adding capacity without addressing the underlying maintenance issue can leave the organization with a larger but still inefficient fleet.
6. Are Reservation or Access Rules Hiding Existing Capacity?
Available vehicles do not help if employees cannot use them.
Capacity may be restricted by:
A vehicle could be physically parked and operational while remaining functionally unavailable.
This matters especially for utility work that occurs outside ordinary office hours.
Expanding automated reservations and secure vehicle access can increase usable fleet capacity without adding assets.
FleetCommander’s utility fleet capabilities include centralized reservations, key control, utilization reporting, and integration across fleet workflows. Read more here: Utility Fleet Management Software
A low-use vehicle still creates financial obligations.
Depending on the organization, those may include:
Compare those costs with how often the capacity is actually required.
Suppose an extra general-purpose vehicle costs $8,000 annually to own and operate but is genuinely needed only several times per year.
The question becomes:
Could those trips be handled for less through:
The answer may still be no.
But the comparison should be made before the asset is automatically retained or replaced.
Right-sizing should never be performed only against average demand.
Utilities must consider unusual but foreseeable events.
Ask:
This produces a more realistic capacity plan.
The goal is to distinguish:
capacity required for credible operational peaks
from
vehicles retained indefinitely because a peak might occur someday.
It can be tempting to view maximum vehicle use as the ultimate efficiency target.
But a utility fleet operating with every appropriate vehicle occupied whenever demand occurs may have very little resilience.
Consider what happens when:
Without any available capacity, ordinary disruption quickly becomes a service problem.
The correct objective is therefore not:
Keep every vehicle busy.
It is:
Maintain the highest practical utilization while preserving enough operational capacity to respond reliably.
This same principle applies across shared fleets: availability must always be reviewed alongside utilization because low availability combined with recurring denied requests can indicate unmet demand.
Total trip volume can be misleading when determining capacity.
Imagine 30 trips occurring during one week.
If those trips take place at different times, a relatively small number of vehicles may serve them all.
If 20 occur simultaneously, capacity needs are very different.
Utility fleets should therefore review peak concurrent demand.
This measures how many appropriate vehicles are needed at the same time.
That is much more useful for capacity planning than simply counting:
The same logic can reveal whether an apparently large fleet is actually needed or whether vehicles are spread across trips that rarely overlap.
Vehicle sharing is sometimes interpreted as taking vehicles away from operational teams.
It can actually do the opposite.
A well-managed shared pool can create a flexible layer of backup capacity for general-purpose transportation.
Suppose a utility has:
Routine travel can draw from the shared pool.
That prevents general-purpose vehicles from being permanently tied to individual departments while still preserving specialized assets for work only they can perform.
Shared capacity can also help when:
The result is not less operational readiness.
It is more flexible use of the capacity the organization already owns.
Temporary rentals can be an important part of utility fleet planning.
Consider rentals when demand is:
Compare:
Annual rental expense
with
the full annualized cost of adding a permanent vehicle.
Also evaluate whether the rental vendor can reliably provide:
Rentals should not replace core mission-critical capacity when the risk of nonavailability is unacceptable.
But they can prevent the permanent fleet from being sized around rare peaks.
Read When Should a Shared Fleet Rent Vehicles Instead of Owning More? A Peak-Demand Decision Framework for the full analysis.
A denied vehicle request is an important signal.
But fleet managers should determine the cause.
A denial may occur because:
Track denials by:
Repeated legitimate denials for the same vehicle class during normal operations provide stronger evidence that permanent capacity may need to increase.
Occasional denials caused by poor distribution or access should lead to a different response.
Read How to Use Reservation Denials to Decide Whether Your Fleet Needs More Vehicles.
Likely action:
Evaluate sharing, reassignment, or removal.
Likely action:
Potentially retain.
Document why availability matters more than utilization.
Likely action:
Investigate additional or redistributed permanent capacity.
Likely action:
Evaluate replacement or maintenance strategy before simply adding vehicles.
Likely action:
Compare temporary rental capacity with ownership.
Likely action:
Reassign or create cross-location access.
Likely action:
Evaluate moving the vehicle or its trips into the shared pool.
Likely action:
Retain capacity based on operational risk, even if utilization is lower.
Separate assets by:
Do not compare bucket trucks with shared sedans.
Review:
Include:
Document which vehicles support work that cannot reasonably be delayed or substituted.
Look for:
Review:
For questionable capacity, compare:
Where possible:
Then monitor operational effects.
Make sure reductions do not eliminate necessary resilience.
Utility demand changes with:
Capacity planning should therefore be continuous rather than a one-time reduction project.
This analysis becomes difficult when operational information lives in separate systems.
A utility may have:
That makes it harder to answer a deceptively simple question:
Do we actually need this vehicle?
Connected fleet management information can combine:
The objective is not to collect more data.
It is to create enough operational context to distinguish:
For more on connected fleet information, read How Connected Fleet Data Improves Shared Fleet Decisions.
Devon Energy provides a utility-sector example of how better scheduling and utilization visibility can reduce permanent fleet capacity.
The organization previously operated a motor pool of approximately 40 to 50 vehicles. After implementing FleetCommander and improving shared vehicle scheduling and management, Devon Energy reduced the motor pool to 11 vehicles.
The program also moved reservations online, reduced manual handling and Help Desk workload, and improved reporting and analytics for fleet optimization.
The operational lesson is not simply that Devon Energy removed vehicles.
It demonstrates why capacity decisions become easier when fleet managers can see:
A utility can carry fewer vehicles when it has confidence that existing capacity is being allocated effectively.
Read the Devon Energy Utility Fleet Case Study.
Related Resources
Utility fleets need enough capacity to respond reliably, but operational resilience does not require every department or location to maintain extra vehicles indefinitely.
The strongest capacity plans separate:
and evaluate each differently.
Specialized assets with no practical substitute may justify lower utilization.
General-purpose vehicles with low usage and available alternatives deserve closer review.
Seasonal peaks may be better supported through temporary capacity rather than permanent ownership.
The goal is not to drive utilization as high as possible or reduce the fleet as far as possible.
It is to maintain the smallest practical fleet that can still provide the vehicles utility crews and staff need when the mission requires them.
That balance can improve utilization, protect vehicle availability, reduce unnecessary capital purchases, and lower long-term operating costs.
Next Steps
Start by separating your fleet into two groups:
Mission-critical or specialized vehicles
and
general-purpose or potentially shareable vehicles.
For the second group, review:
Identify vehicles that have low use but no unique operational requirement.
Before removing them, test whether demand can be absorbed through sharing, reassignment, or temporary capacity.
FleetCommander helps utility fleets centralize vehicle reservations, monitor utilization and availability, manage driver access, connect telematics and maintenance information, and support right-sizing across multiple locations.
Explore FleetCommander for Utility Fleets to see how better operational visibility can support reliable fleet capacity while reducing unnecessary vehicle costs.