Walmart warehouse automation hits 'peak complexity'

Walmart's warehouse automation is harder than the pitch deck said. The Wall Street Journal reports that Walmart's push to automate roughly 200 U.S. supply-chain facilities has run into setbacks, from cardboard boxes the machines cannot handle to peak utility bills more than three times higher. Walmart's head of U.S. supply-chain operations, Rob Montgomery, called it "peak complexity." If the largest retailer on earth, with a 12.6% stake in its own robot vendor, finds automation this hard, a small retailer should think hard about what to automate first.

What actually happened

The details come from the WSJ report by Sarah Nassauer, as summarized by Quartz:

• The boxes were wrong. Walmart's old cardboard cases were too large for the automated systems. It is moving to shorter boxes that have to be taped shut, which adds cost.
• Some products do not fit the robots. Oversized items like jumbo bags of dog food still need people.
• Power costs jumped. Monthly utility bills at automated grocery warehouses can top $800,000 at peak, against about $250,000 under mostly manual operation, according to people familiar with the matter.
• Robots break. Symbotic, Walmart's main automation partner for nonperishable goods, says under 5% of its robots are in repair at any given time, down from under 10% last year.
• Store robotics is slower still. Walmart bought Alert Innovation for $400 million in 2023 and sold it to Symbotic for $200 million. Symbotic does not expect a workable in-store model until 2028.

Walmart still expects automation spending to peak this year and next. Montgomery's view, per the Journal: if they wait for perfect, "it'll take too long."

Why it matters for your business

Robots do not automate a process. They automate a standardized process. Walmart's problem was not the robot. It was the box size, the odd SKUs and the power bill that nobody had modeled. That is the same failure we see when a small shop buys an automation tool before it fixes its data: inconsistent SKUs, missing dimensions, three ways to receive a pallet.

For a business with one warehouse or a back room, the high-return automation is software, not steel:

• Clean product data first. Dimensions, weights and pack sizes on every SKU. Every downstream tool needs them.
• Automate the decisions: pick-list order, carrier selection, reorder points, label printing.
• Model the full cost. Walmart's power bill is the line nobody put in the ROI deck. Put maintenance, energy and the exception queue in yours.
• Keep a manual lane. The dog-food bags will always exist.

Sources: The Wall Street Journal, Quartz via Yahoo Finance.