AMR vs AGV – Choosing Mobile Robots for Brownfield Warehouses

AMR or AGV? In brownfield warehouses, the right choice depends on navigation constraints, fleet orchestration, and charging strategy – not brand names. This 2026 guide compares both, shows where each wins, and gives you a 45-day pilot plan. For adjacent planning, see Choose Your AI Stack and wire supervisor loops with Automation Workflows.

Quick Summary

AGV wins in fixed, repeatable lanes with clear paths and predictable traffic. AMR wins in dynamic environments with people, pallets, and ad-hoc blockages. If you can paint tape and never move racks, AGV is simple and robust. If your aisles change weekly, AMR’s mapping and obstacle avoidance pay off.

AMR vs AGV – side-by-side

Use this table to align technology choice with ground truth. The aim is fewer surprises during commissioning and scale-up.

Score relevance to your site and highlight any row where your reality conflicts with a vendor demo.

Brownfield constraints that decide the winner

Legacy floor markings, mixed forklift traffic, and seasonal peaks often decide AMR vs AGV long before procurement. Capture these realities up front to avoid rework.

Walk the site with this lens before shortlisting vendors.

• Layout volatility – racks moved monthly or seasonally.
• Shared aisles – humans, pallet jacks, and forklifts.
• Mixed flooring – slopes, thresholds, damaged tape.
• Hand-off points – conveyors, packing, and AS/RS interfaces.
• Network dead spots – Wi-Fi coverage for maps and updates.

Fleet orchestration – traffic, queues, and priorities

Whether you choose AMR or AGV, traffic policy and job dispatch determine real throughput. Orchestration prevents blocking, starvation, and wasted charge cycles.

Use the matrix to define must-haves for your WMS/MES integration and traffic manager.

Hook alerts and approvals into your chat/email stack via Automation Workflows so supervisors get pinged for stalls or queue overflows.

Charging strategies – continuous ops without surprises

Charging is where many pilots fail. The wrong policy creates mid-shift brownouts or idle fleets at the wrong time.

Pick one strategy and enforce it with your fleet manager.

• Opportunity charging – short top-ups during natural pauses. Best for AMR with frequent stops.
• Scheduled charging – fixed windows and rotation. Good for AGV milk-runs.
• Swap stations – high-availability operations with battery swaps and safety checks.
• State-of-charge thresholds – prevent deep cycles that shorten battery life.

ROI model – lanes, payloads, and uptime

Use a simple model to compare options without overfitting. Replace values with your site numbers to get a defensible payback range.

The model estimates net monthly value after capex amortization and maintenance.

45-day pilot plan

Keep scope tight. One lane, one payload class, one integration to WMS. Expand after you have stable KPIs.

Week 1 – scoping and mapping

• Pick 1 transport lane and define hand-offs.
• Measure congestion points and define keep-outs.
• Decide charging policy and operator hand signals.

Weeks 2-3 – commissioning

• AGV: install guides and test intersections. AMR: map site and set speed zones.
• Connect to WMS for job dispatch. Validate queue caps at docks.
• Run safety drills – e-stops, obstacle handling, mixed traffic.

Weeks 4-6 – measured ops

• Track stops/hour, detours, queue waits, jobs/shift, and battery health.
• Tune traffic priorities and intersection timeouts.
• Report weekly and freeze changes before KPI review.

Wire alerts and daily summaries with Automation Workflows so supervisors see stalls, blocked aisles, and low battery events in real time.

Prompts and checklists

Use these templates to keep planning consistent across shifts and sites.

Lane suitability prompt

Goal: decide AMR or AGV for lane {{name}} in {{warehouse}}.
Inputs:
- Layout volatility: {{low|medium|high}}
- Shared traffic: {{humans|forklifts|both}}
- Average obstacles/hour: {{n}}, choke points: {{n}}
- Payload: {{kg}}  - Pallet type: {{EUR|US|custom}}
- Hand-offs: {{dock|conveyor|AS/RS}}
Return:
- Recommend AMR or AGV with rationale
- Charging policy suggestion and intersection rules
- KPIs to monitor and expected payback range

Safety and signage checklist

• Map speed zones and audible/visual alerts per zone.
• Signage at crossings, docks, and human pick areas.
• Document e-stop access and weekly drill cadence.
• Record incidents and near misses with time and location.

Quick Q&A

Can we start with AGV and switch to AMR later?
Yes, but plan for different infrastructure. AGV guides are sunk cost – validate long-term layout stability first.

Do AMRs require perfect maps?
No. Good maps help, but the benefit is resilience to change. Keep a weekly remap routine for accuracy.

What about mixed fleets?
Common in brownfield sites. Use an orchestrator that supports both and defines right-of-way rules at intersections.

Final thoughts

Choose AMR when your world moves – humans, pallets, and shifting aisles. Choose AGV when lanes are fixed and repeatable. Keep orchestration and charging policies tight, measure real KPIs, and scale only after a clean 2-3 week run with stable numbers. For stack planning see Choose Your AI Stack, and for daily alerts and summaries wire Automation Workflows.