Warehousing space represents one of the most significant and controllable costs in the supply chain. Before investing in additional square footage, shippers should first explore how to unlock the full potential of their existing facilities.
The good news: there are proven, cost-effective strategies that can dramatically improve warehouse capacity without expanding your four walls.
Why Warehouse Capacity Optimization Matters
With warehousing costs continuing to rise, maximizing every square foot of your current facility isn't just smart - it's essential for supply chain competitiveness. Penske Logistics works with shippers to implement data-driven capacity strategies that improve efficiency, reduce costs and scale with demand.
1. Optimize Labor Management
According to Supply House Times, labor costs can account for between fifty and seventy percent of total warehouse fulfillment costs, making workforce management one of the highest impact levers available to operators.
Labor management combines software and engineering to maximize user performance and warehouse utilizaton
– Andy Moses, senior vice president of solutions for Penske Logistics
The foundation of an effective labor management program is communication - keeping associates informed and engaged at every stage of the process.
Key benefits of a strong labor management program include:
- Improved workforce planning - better visibility into workload volume and type enable more accurate staffing to meet variations in operational demands, including peak periods
- Performance accountability - giving associates visibility into individual and team metrics drives healthy competition and highlights efficiency opportunities
- Standardized processes - establishing labor standards eliminate non-value-added activities and ensures consistent execution across the facility
Real-world result: Penske helped a major manufacturer operating a 1.7 million square-foot, dual-use warehouse, with 150 associates, to implement a labor management program. Within just eight months, employee productivity increased by 22%.
2. Accelerate Pick Operations
Faster picking directly translates to better warehouse utilization. Even incremental improvements in pick speed can have a measurable impact on throughput and capacity.
Effective strategies to increase pick speed include:
- Bulk-to active inventory systems - store inventory in bulk locations first, then replenish active pick locations at ground level to minimize travel and improve order fulfillment speed
- Wearable scanners - hands-free scanning technology reduces time spent handling devices and keeps associates moving
- Voice picking - voice-directed workflows allows associates to confirm picks verbally, improving both speed and accuracy
3. Implement a Slotting Optimization Strategy
Slotting - the process of determining where each SKU lives in your warehouse - is a powerful and often underutilized tool for improving capacity and efficiency.
An important service that we provide for any customer is a slotting analysis. It begins by measuring inventory velocity and categorizing SKUs:
| SKU Class | Movement Rate | Ideal Location |
| A-Class | Fast-moving | Near the dock for quick access |
| B-Class | Moderate | Mid-facility |
| C-Class | Slow-moving | Further from dock or in higher rack positions |
Penske engineers analyze inventory movement over time - factoring in seasonal demand shifts - and translate those finding into rules that drive the warehouse management system (WMS). The WMS is continuously refined as demand patterns evolve.
In food and beverage warehousing for example, slotting patterns change seasonally. A product like strawberries may require a dedicated section of the warehouse to be activated during peak season to support efficient put-away and picking.
4. Tailor the Space for Maximum Efficiency
The physical configuration of your warehouse - aisle widths, storage systems and vertical space utilization - has a direct impact on how much product you can store and how efficiently associates can move through the facility.
Aisle width configurations to consider:
Standard aisles (12-14 feet) - designed for conventional counterbalanced forklifts, this configuration offers the most flexibility in terms of equipment and ease of movement. However, they consume the most floor space, which reduces the total number of storage positions available in a footprint.
Narrow aisles (8-10 feet) - by switching to reach trucks, which extend their forks outward rather than driving directly into a rack. operators can reduce aisle width and gain additional storage rows without expanding the facility's footprint. The trade-off is more limited equipment selection and the need for operator training on the specialized machinery.
Very narrow aisle or VNA (~6 feet) - VNA configurations maximize storage density but require a wire-guided solution. This system works by embedding wires in the floor at the center of each aisle that emit a low-frequency signal. Material handling equipment fitted with sensors then follows that signal to navigate the aisle precisely - eliminating the need for an operator to manually steer and significantly reducing the risk of rack or product damage in such tight spaces. VNA delivers the greatest storage gains but requires the highest upfront infrastructure investment.
Reducing aisle width can significantly increase the number of storage positions in each footprint - though it requires the appropriate equipment investment.
Vertical storage solutions are also worth evaluating. Penske designs and installs a range of racking systems to maximize vertical space, including:
- Single-deep racking - standard selective access for high-SKU-count environments
- Double-deep racking - increases storage density with minimal aisle addition
- Push-back racking - high-density storage using a last-in, first-out (LIFO) system
- Drive-in racking - maximum density for low-SKU-count inventory
Build on These Gains With Continuous Improvement
Implementing these strategies is a strong starting point - but the most competitive warehousing operations don't stop there. A continuous improvement program ensures that capacity gains compound over time.
Penske's Kaizen+ program is an example of how ongoing improvement gets built into daily operations. The program:
- Trains every associate and load planner to identify and eliminate wasteful processes
- Provides a structure workflow for submitting improvement ideas
- Tracks implemented changes so that best practices can be documented and shared across the network
Small, consistent improvements add up - and often reveal capacity opportunities that a one-time assessment would miss.
Ready to Get More From Your Warehouse?
Whether you're facing capacity constraints or simply looking to run a leaner, more efficient operation, Penske has the expertise and tools to help you maximize your existing warehouse investment.
Contact us to learn how our warehouse optimization solutions can work for your supply chain.