Warehouse automation is a broad term covering four quite different jobs: storing goods, retrieving them, moving them around the building, and getting the right ones into the right order for dispatch. Most operations do not need all four, and the ones that try to solve all four at once tend to spend more than they had to.
This page covers what each technology actually does, which pressure point each one addresses, how retrofitting into an existing Irish building differs from designing a new one, and how to sequence a project so each stage pays for the next.
What warehouse automation actually covers
It is worth separating the functions, because they fail differently and they are rarely all under strain at once.
- Storage — how much you can hold in the building you have.
- Retrieval — how quickly and accurately you can get a specific item back out.
- Transport — moving goods between receiving, storage, picking and dispatch.
- Sortation and dispatch — getting the right goods into the right order, onto the right vehicle, at the right time.
A site struggling on storage density has a different problem from one struggling on picking accuracy, and they are solved by different equipment. Identifying which of the four is actually constraining you is the first piece of work.
Where the pressure usually shows first
Picking accuracy
Picking errors are the most expensive kind of warehouse mistake, because they reach the customer rather than stopping an internal process. Where error rates are the complaint rather than throughput, the answer is usually in how picks are presented and confirmed rather than in how fast people walk.
Walking time
In a conventional warehouse a large share of picking time is spent travelling rather than picking. That is the problem goods-to-person systems exist to solve, and it is why storage and picking are often addressed together rather than separately.
Storage density
When a building is full but the business is growing, the choice is a bigger building or better use of the current one. Height is usually the underused dimension, which is where automated storage becomes an alternative to relocation.
Internal transport
Pallets and totes moving between areas absorb labour and forklift time without adding value. This is often the easiest function to automate independently of the others, which makes it a common first step.
Dispatch accuracy and timing
Where orders have to be assembled in a specific sequence, or loaded in a particular order, sortation becomes the constraint rather than picking or storage.
The main technologies, and what each one solves
Automated storage and retrieval
Storage machines that hold goods in dense racking and deliver them to an operator or a workstation on request. They address storage density and walking time in one move, because the goods come to the person rather than the person going to the goods. ASRS is the largest commitment on this list and the one that most constrains the building around it.
Shuttle systems
A variation on the same idea for high-density storage where throughput matters as much as capacity. Shuttles move within the racking structure itself, which lifts retrieval rate above what a single crane or lift can sustain.
Autonomous mobile robots
AMRs navigate open floor without fixed track or guidance infrastructure, which is what makes them suited to routes that change. They address internal transport specifically, and can usually be introduced without altering the building.
Autonomous forklifts
Where the load is a pallet and the movement involves height, autonomous forklifts cover ground AMRs cannot. The distinction between the two is mostly about what is being carried and whether it has to be lifted into racking.
Automated picking
Picking systems address the accuracy and speed of assembling orders. This is the function where automation most directly affects what the customer experiences.
Sortation
Sorting technology routes items to the right destination at rates no manual process reaches. Sortation is usually what allows a distribution operation to scale rather than simply run faster.
Conveying
The connective tissue between all of the above, and the part most often underestimated. Where sequence has to be preserved between processes, that is a FIFO lane; where processes need to run at their own pace, it is accumulation. Neither is optional in a system built from several automated islands.
Retrofit or new build
Most Irish warehouse automation happens inside buildings that already exist, and that changes the problem considerably.
In a new build the equipment shapes the building. In a retrofit the building constrains the equipment, and four things usually decide what is possible: clear internal height, floor flatness and load capacity, column spacing, and how much of the operation can be taken offline during installation.
Clear height is the one most often assumed rather than measured — usable height is what remains under sprinklers, lighting and services, not the height to the roof steel. Floor flatness matters more than people expect for anything travelling at height.
The practical consequence is that retrofit projects tend to favour technologies that can be introduced in stages and around existing operations — AMRs, sortation and conveying — over those that require the building to be reorganised around them.
Sequencing a warehouse automation project
Start with the constraint, not the catalogue
Establish which of the four functions is actually limiting the operation. Automating storage when picking accuracy is the complaint spends money without addressing what people are complaining about.
Get the data before the design
Order profile, lines per order, SKU count and how much of the volume sits in the fastest-moving lines. These determine whether goods-to-person makes sense, how much of the range needs automating at all, and what rate the system has to sustain. Most warehouses have this data already and have never had a reason to look at it this way.
Model before you commit
Warehouse automation is where flow and throughput assumptions are most likely to be wrong, and where being wrong is most expensive. A simulation tests the design against your actual order profile before anything is bought.
Automate in stages that stand alone
Each stage should deliver something on its own and leave the next one possible. That means designing the conveying, buffering and control headroom for where the operation is going rather than where it starts.
What warehouse automation does not fix
- Inaccurate stock data. An automated store will retrieve exactly what the system believes is in a location. If the record is wrong, automation makes the error faster rather than visible.
- A messy SKU range. Automating the handling of items that should have been rationalised locks the range in place and makes changing it more expensive.
- Demand that is genuinely unpredictable. Automation excels at repeated patterns. Where volumes swing unpredictably, flexible capacity often beats fixed capacity.
- A constraint that is somewhere else. If goods cannot be received quickly enough, automating storage moves the queue to the yard.
Whether the numbers justify a project at all is covered separately in is factory automation worth the investment.
Common questions
Can warehouse automation be retrofitted into an existing building?
Frequently, and most Irish projects are retrofits. What decides it is usable clear height, floor flatness and load capacity, column spacing, and how much of the operation can be taken offline for installation. Those four are worth measuring before considering equipment.
Where should a distribution centre start?
With whichever of storage, retrieval, transport or sortation is actually constraining the operation. Internal transport is often the easiest to automate independently, which is why it is a common first step — but common is not the same as correct for your site.
Does automation reduce warehouse headcount?
It changes the work more reliably than it reduces the number of people. Travelling and searching reduce sharply; exception handling, supervision and maintenance grow. On operations already struggling to recruit, absorbing volume growth without adding people is usually the outcome that matters.
What size of operation justifies it?
There is no threshold, because the technologies scale differently. A single AMR handling one repetitive route can pay back in a modest operation, while goods-to-person storage generally needs volume and SKU count behind it. The question is which function is under strain, not how big the building is.
How disruptive is installation?
It depends more on the technology than the scale. AMRs and sortation can usually be introduced alongside a running operation. Anything that reorganises racking or the floor plan needs a plan for how the operation continues while it happens, and that plan is part of the project rather than an afterthought.
How does warehouse automation connect to the production side?
Usually at the pallet. Palletising completes the load at the end of the line and warehouse systems take it from there. Where the two are specified separately, the handover between them is where delays appear — the wider point is in factory automation in Ireland.
Working out what your operation needs
LVP Automation designs and integrates warehouse systems for logistics and distribution operations in Ireland, including the storage technology, autonomous mobile robots and the conveying that links them. System-level work is covered by conveyor system design and our wider automation services.
We are based in Finglas, Dublin 11. Tell us which part of the operation is under strain and we will tell you what addresses it.
