NVIDIA-Backed Mini Data Centers Are Going on Homes — and Hosts Get Power and Internet for About $150 a Month

A startup called SPAN is putting mini data centers on the outside walls of new homes — and the homeowner barely pays for power again. Under the program, called XFRA and announced in May 2026 with NVIDIA as launch partner and US homebuilder PulteGroup as the first rollout partner, a liquid-cooled box containing 16 NVIDIA Blackwell GPUs is installed on a home at no upfront cost. SPAN owns the hardware and sells the computing power to AI companies; in exchange, the host household gets a smart electrical panel, battery backup and electricity and internet at a fixed, heavily discounted rate — an example figure SPAN's CEO has given is about $150 a month for both, roughly half the average US household's combined bill.

What happened

SPAN, a San Francisco company known for smart electrical panels that replace the traditional home breaker box, announced XFRA in a May 2026 Business Wire release as "a distributed data center solution" — instead of one giant facility, thousands of small compute nodes in homes and small commercial spaces, networked through its XFRA Cloud platform and sold as a single pool of capacity to hyperscalers and AI cloud providers. NVIDIA is the initial launch partner, and its enterprise-grade, liquid-cooled RTX PRO 6000 Blackwell Server Edition GPUs are the hardware inside each node.

Homebuilder PulteGroup, one of the largest residential builders in the US, is working with SPAN on the first installations in newly built homes. According to DataCenterDynamics' report on the launch, each node contains 16 of the NVIDIA GPUs alongside four AMD EPYC server CPUs. Reporting by CNBC, republished in part by Realtor.com, says a 100-home proof of concept with PulteGroup is planned for the third quarter of 2026 in the southwest — reports name Nevada and Arizona — following a small number of early installations.

How a wall becomes a data center

The premise is unused capacity. SPAN says the average household draws only part of the electrical capacity its connection is provisioned for — figures cited in coverage of the launch put typical usage at roughly 42% of a home's allotted capacity. SPAN's smart panel already monitors consumption in real time, so it knows how much spare power is available. XFRA points that spare capacity at the GPU node mounted outside: the panel feeds the node when the house is drawing little — overnight, or during the working day — and the node, an outdoor unit roughly the size of a large air-conditioning unit, runs AI workloads inside a liquid-cooled enclosure. A backup battery smooths the gaps between what the home needs and what the node can use.

The work these nodes are built for matters. SPAN is explicit that XFRA is "not intended to replace centralized data centers, but instead augment them" — the nodes are aimed at inference, the work of actually running AI models for users, plus cloud gaming and other jobs where being close to the user lowers delay. Training a frontier model still needs a giant, tightly connected facility; answering millions of app queries does not.

What the homeowner gets

The deal, as described in SPAN's announcement and CNBC's reporting, has four parts. First, the node is installed during construction at no cost to the homeowner. Second, the host receives a premium SPAN smart panel and battery backup, with solar optional. Third, electricity and internet come at fixed, discounted rates. SPAN founder and CEO Arch Rao gave CNBC an example flat fee of $150 per month for both — "about half of what average Americans pay for their electricity and internet service" — and added that in some cases there may be no fee at all. Fourth, SPAN keeps ownership of the hardware and the revenue from selling its compute; some reports say hosts may also receive a share of the computing revenue from their node, though the proportion has not been disclosed.

The scale of what sits on the wall is worth pausing on: technology press coverage has valued each node's hardware at more than $250,000. The homeowner never buys it — but it is a six-figure piece of industrial equipment attached to their house, one reason the program starts with new construction, where everything is designed in rather than retrofitted.

Why NVIDIA and SPAN are doing this

The bottleneck behind the idea is power, not chips. Sites where a utility can deliver hundreds of megawatts to a single new data center have become scarce, and grid connections for large projects can take years. SPAN's announcement notes that US data centers consumed 183 terawatt-hours in 2024 — more than 4% of the country's electricity — and that the share could exceed 9% by 2030. NVIDIA's senior managing director for the global energy industry, Marc Spieler, told CNBC that "the ability to leverage existing locations that have access to power makes a lot of sense."

SPAN's pitch to the industry is speed and cost. The company claims it can match a conventional 100-megawatt data center by deploying nodes across about 8,000 homes, roughly six times faster and at about a fifth of the cost — figures reported by Bisnow and others as SPAN's own estimates, not independently verified results. Polling cited in coverage of the launch also found 47% of Americans oppose a data center in their neighbourhood — a box on an already-built house sidesteps most of that fight, though whether neighbours agree is untested.

What to watch next

Three things will decide whether this stays a curiosity or becomes a model. First, the 100-home proof of concept itself: whether the nodes deliver reliable, sellable inference capacity through real households' daily power swings, and what the first hosts report about noise, heat and bills. Second, expansion beyond new builds — SPAN has said retrofitting existing homes comes later, and in September 2026 it signed solar installer Sunrun as an installation partner, with host homes receiving solar and battery systems through a pre-paid lease at no cost, according to Solar Power World. Third, the money: SPAN says it has a pipeline aimed at gigawatt-scale capacity in 2027, which implies tens of thousands of homes. The $150 example fee, the reported revenue share and the resale price of all that distributed compute will have to add up in public before builders beyond PulteGroup commit.

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