Golden-hour view of a residential rooftop solar array with mountains in the distance
SPAN · NVIDIA · PULTEGROUP · APRIL 2026

Your home is becoming
the grid edge.

SPAN, Nvidia, and PulteGroup just announced XFRA, the first distributed AI compute network designed to live inside residential homes. gridhost.io is the independent hub for the homeowners, builders, installers, and investors who will host it. Built by Raynora, the residential energy operator behind AURA℠, installing across 37 markets.

Built on AURA℠ tax-equity infrastructure · 37-market residential install footprint
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How to sign up

How to sign up for XFRA.

There is one official XFRA sign-up, and it belongs to SPAN. gridhost.io is the independent step that comes right after it: a free eligibility score for your home, and a clear path to getting it ready before the retrofit channel opens in 2027.

Step 1

Register your interest with SPAN.

SPAN's XFRA interest form is the official list. It is free, it takes two minutes, and it is the only place SPAN collects homeowner interest. Fill it out first. Go to SPAN's XFRA form.

Step 2

Score your home on gridhost.io.

Six quick answers give you an instant readiness score against the public XFRA spec: service rating, SPAN panel, battery, solar, and internet. No cost, no commitment. Score my home.

Step 3

Get the home ready.

Retrofits will prioritize homes that already have a SPAN smart panel and battery. The $89 Readiness Audit models your specific home, and Raynora installs the full bundle in 37 markets. See the three paths.

The shift

A new layer of the grid just opened.

For the first time, the world's largest AI infrastructure companies are buying compute capacity from the residential grid itself. SPAN's XFRA puts small, liquid-cooled GPU nodes outside homes, connected through the smart panel that already controls your house. Hyperscalers buy the compute. Homeowners get their electricity and internet bills paid. The 100-home pilot is live in Q3 of this year.

A pre-positioned home at twilight showing SPAN smart panel, whole-home battery, and outdoor compute node footprint

What a pre-positioned home looks like. SPAN smart panel, whole-home battery, and an outdoor footprint for the compute node. The retrofit channel opens in 2027.

— 01

The infrastructure already exists.

The average American home uses about 40% of its electrical capacity. XFRA's smart panel taps the unused 60% and makes it productive without ever compromising household use. No new substations. No new transformers. No three-year permitting cycle.

— 02

The first 100 homes are PulteGroup new-builds.

The pilot is moving through a single homebuilder and a single build-to-rent operator this year, with broader US rollout starting early 2027. Retrofits open after that, prioritizing homes that already have a SPAN smart panel installed.

— 03

The window to pre-position is now.

Every home that has solar, a SPAN panel, and a battery installed before retrofits open in 2027 is a candidate node site on day one. Raynora bundles all three into a single financed install through AURA℠. The 30% federal credit is captured on your behalf and reflected in your price.

The unlock

Every home is sitting on unused electrical capacity.

SPAN's data from millions of installed smart panels shows the typical 200-amp American home uses 80 amps at concurrent peak, holds 40 for safety, and leaves 80 amps of headroom that never gets touched. That's the slice XFRA puts to work, without ever interrupting how the household uses power.

80A
40A
80A
80A Unutilized capacity
(the XFRA slice)
40A Safety margin
80A Typical max
concurrent use
200A Typical US home
electrical service
60%

of an average home's electrical service capacity sits unused around the clock.

  • — 01 A 200-amp service is the working baseline for an XFRA host. Most US homes built after 1990 have it.
  • — 02 SPAN's smart panel measures every circuit in real time, so XFRA can use the headroom safely without competing with the household.
  • — 03 If the home does need the capacity (an EV charging while the dryer runs), XFRA pauses and the household has full priority.

XFRA pays the homeowner to put that 80A to work.

80A headroom, the XFRA slice 40A safety margin 80A household peak

Illustrative rendering, not a product image. Split per the SPAN white paper, section 4.1.

Sources
Who you are

Six different stakes. One shared opening.

XFRA isn't a product you buy. It's an infrastructure layer being built right now, and the people who get inside it early will define the next decade of distributed compute. Pick the lane that fits.

Start here

For homeowners

Find out if your home is a candidate. Estimate what XFRA could pay you in subsidized energy and internet bills. Reserve your place on the retrofit waitlist before everyone else does. This is the primary path on gridhost.io and the only one you can act on today.

Check my home's eligibility
— 01 60-second quiz
Free score by email
Zero spam, ever
Also relevant for
— 02
Builders & build-to-rent Pre-spec solar, SPAN, and battery on new construction. We're tracking the XFRA pipeline closely.
— 03
Investors & capital Tax-equity and LP appetite in distributed energy hardware. Reach out via the form below.
— 04
Installers & electricians Keep your crews booked on Raynora projects in your region.
— 05
Hyperscalers & compute buyers Regional residential capacity for AI inference, cloud gaming, and content streaming workloads.
— 06
Sales partners & lead partners Existing Raynora sales partner tracks at raynora.com/salespartner. Form below works too.
Drop us a note

Tell us who you are. We'll be in touch within 48 hours.

Eligibility

Is your home XFRA-ready?

Four answers tell us most of what we need to know. We score your home in real time against the public XFRA spec and the SPAN-installed-base retrofit profile, then put you on the priority list when SPAN opens the retrofit channel.

What we look at:

  • Service rating (200A is the working baseline)
  • State and utility (interconnection rules vary)
  • Internet plan tier (XFRA needs symmetric upload)
  • Existing solar, panel, or battery status

What happens next:

  • Free instant eligibility score sent to your email
  • Full pre-positioning options if your home looks promising
  • Priority slot when SPAN opens retrofits in 2027
  • Zero spam, zero share with third parties
Yield estimator

What XFRA could pay your home.

XFRA pays homeowners through subsidized energy and internet bills, not a direct check. The economic value depends on local electricity rates, your internet plan, and how much of your capacity is reclaimable. Drag the inputs to see a rough range.

State Virginia
Monthly electric bill $220
Monthly internet bill $85
Pre-position level
Estimated annualized value to homeowner
$2,820
Likely range: $2,256 to $3,384 per year
Energy bill subsidy $1,980 / yr
Internet bill subsidy $765 / yr
Battery backup value $75 / yr

Modeling estimate based on the XFRA white paper (April 2026), SPAN-installed-base data, and publicly available utility rates. SPAN has not published final homeowner economics. Actual figures will vary by site, utility, and final SPAN host agreement.

Pre-positioning paths

Three honest paths to getting ready now.

Same hardware, three different commitments. The SPAN white paper says retrofits prioritize existing SPAN customers. These are the three ways to put your home in that pool before the channel opens.

Free · No commitment

The Waitlist

$0 forever

Reserve your place in line. Receive your eligibility score, market updates, and first notice when XFRA opens in your state.

  • Instant eligibility score by email
  • Monthly XFRA news brief
  • First-mover notice when retrofits open
  • No phone calls, no sales pressure
Join the waitlist
Financed via AURA℠

The Full Install

$0 down

Solar, SPAN smart panel, and whole-home battery, installed by Raynora and financed through AURA℠. The 30% federal credit is captured on your behalf and reflected in your price.

  • QCells 430W panels + Enphase or Tesla PW3 battery
  • SPAN smart panel (the existing-customer retrofit pool)
  • 30% federal credit captured on your behalf, reflected in your price
  • Maintenance for the 25-year term, 10-year workmanship and roof penetration warranties
  • Purchase option from year 6 at fair market value
  • Positioned for the priority retrofit window in 2027
Get a Raynora quote
Where we install

37 markets. AURA℠ available in 16.

Raynora installs solar, SPAN smart panels, and home batteries across 37 markets, with AURA℠ lease-to-own available in 16 of them. The SPAN white paper identifies existing SPAN customers as the priority pool when retrofits open in 2027. We're positioning homes for that window. Final eligibility is SPAN's call, not ours.

01

AURA℠ available

16 states · 30% federal credit captured

AURA℠ lease-to-own is available. Solar, SPAN smart panel, and battery install under one project, and the 30% federal Section 48E credit is captured on your behalf and reflected in your price.

AZ CA CO CT FL HI ID MA NV NJ NY NC PA TX UT WA
02

Lease & Own It

21 markets · Standard paths active

AURA℠ isn't available here yet, but we install solar, SPAN smart panel, and battery under the Worry-Free Lease at $0 down or the Own It Day One path. Same install, same equipment, same 25-year system term.

AR DE DC IL IN IA KS KY LA ME MD MI MO NH OH OK RI SC VT VA WV
Why Raynora is building this

We've been doing the harder version of this for years.

Aerial view of a Raynora-installed residential solar array on a Spanish-revival home

Raynora is a residential energy operator installing across 37 markets. We sell, design, install, and finance solar and battery systems, including AURA℠, a 25-year lease-to-own structure that captures the 30% federal Section 48E credit for the homeowner's benefit, reflected in the price.

That sentence describes, almost exactly, the kind of capital structure XFRA needs to scale to one gigawatt. Tax equity, pass-through credits, residential interconnection, multi-state install logistics, lead acquisition at scale. We've solved the hard version of this for solar. XFRA is the same problem applied to compute hardware.

gridhost.io is independent. We are not affiliated with SPAN, Nvidia, or PulteGroup. We are building the connective layer the XFRA ecosystem doesn't have yet, while routing every homeowner who wants to be ready to the one action that actually works today.

37
Markets where Raynora installs today
16
States where AURA℠ is available right now
25
Year lease-to-own term already proven on solar
$0
Down on financed AURA℠ projects
Common questions

What people ask before getting ready.

Quick answers on XFRA, SPAN, and what pre-positioning actually involves. For deeper detail on AURA℠ tax-equity, financing, or how Raynora installs across 37 markets, the full guide lives at raynora.com/#faq.

How do I sign up for XFRA? +

There is one official XFRA sign-up, SPAN's interest form. Fill that out first; it is free and it is the only list SPAN maintains. gridhost.io is independent and is not affiliated with SPAN, Nvidia, or PulteGroup. What gridhost.io adds is the next step: a free instant score that tells you whether your home already meets the public XFRA prerequisites (200A service, SPAN smart panel, whole-home battery, strong upload speed), and a path to closing any gaps before retrofits open in 2027. Final eligibility decisions are SPAN's.

Am I a candidate to host an XFRA node? +

The public XFRA spec points to four things: a 200-amp electrical service, a SPAN smart panel, a whole-home battery, and an internet plan with solid upload speed. Homes that already have a SPAN panel are the priority pool for the 2027 retrofit channel. Solar is optional but improves the economics. The free eligibility score on this page checks all four in about a minute and sends the full breakdown to your email. SPAN has not announced specific states for the rollout; Raynora installs the prerequisite hardware across 37 markets today.

What is XFRA? +

XFRA is the residential distributed AI compute network announced in April 2026 by SPAN, Nvidia, and PulteGroup. It places Nvidia RTX Pro 6000 Blackwell GPU compute nodes inside individual homes, paired with a SPAN smart panel, whole-home battery, and solar. Homeowners get subsidized energy and internet bills, hyperscalers get distributed AI inference capacity, and the grid gains a new layer of demand-responsive load.

Who is behind XFRA? +

XFRA is a partnership between three companies. SPAN makes the smart electrical panel that orchestrates whole-home energy. Nvidia supplies the RTX Pro 6000 Blackwell GPUs that run the AI workloads. PulteGroup, one of the largest homebuilders in the United States, is the launch new-construction channel. The official partnership site is xfra.ai.

When does XFRA launch? +

The 100-home residential pilot is scheduled for Q3 2026 with PulteGroup new-construction homes and one build-to-rent operator. SPAN has not yet publicly announced the specific pilot markets. Broader U.S. deployment, including the retrofit channel for existing SPAN-installed homes, is scheduled to begin in 2027 per the official XFRA white paper.

What is the SPAN smart panel? +

The SPAN smart panel replaces a standard home electrical service panel with a connected, circuit-by-circuit controllable system. It tracks energy use in real time, prioritizes loads during outages or peak rates, and orchestrates solar, battery, and EV charging. For XFRA, it's the required orchestration layer that balances compute load against household energy demand. A home cannot host an XFRA node without one.

How do homeowners get paid for hosting an XFRA node? +

Per the XFRA white paper, homeowners receive subsidized energy and internet bills rather than a direct cash payment. Compute offtakers pay SPAN for capacity; SPAN passes a share back to the homeowner as credit applied against utility costs. The exact economics depend on the home's local electricity rate, internet plan tier, and the GPU workload assigned to that node. Homes in high-rate utilities (parts of California, New York, Massachusetts) see proportionally higher value than homes in low-rate utilities.

What states will XFRA be available in? +

SPAN has not announced specific state markets for either the 2026 pilot or the 2027 broader rollout. What's known: the retrofit channel will prioritize existing SPAN-installed homes, and PulteGroup builds across many states. Raynora installs solar, SPAN, and battery across 37 markets today (36 states and Washington, DC), with AURA℠ lease-to-own available in 16 of them: Arizona, California, Colorado, Connecticut, Florida, Hawaii, Idaho, Massachusetts, Nevada, New Jersey, New York, North Carolina, Pennsylvania, Texas, Utah, and Washington. Everywhere else we serve, the same install runs on the Worry-Free Lease or Own It Day One paths.

How do I prepare my home for XFRA? +

Three prerequisites: install a SPAN smart panel, install a whole-home battery, and confirm enough electrical capacity headroom (most 200-amp panels have 60% to 80% of headroom unused). Adding solar is optional but materially improves the home's compute-node economics by reducing energy cost. Raynora installs all three components under one project. Where AURA℠ is available, the install runs as a 25-year lease-to-own with the 30% federal Section 48E credit captured on your behalf and reflected in your price. Everywhere else we serve, it runs on the Worry-Free Lease at $0 down or on Own It Day One.

What's the difference between gridhost.io and xfra.ai? +

xfra.ai is SPAN's official site for the XFRA partnership with Nvidia and PulteGroup. gridhost.io is an independent venture by Raynora Solar that helps homeowners, builders, installers, and investors get positioned for XFRA before retrofits open in 2027. gridhost.io is not affiliated with SPAN, Nvidia, or PulteGroup. Final XFRA eligibility decisions are SPAN's, not ours.

What is Raynora Solar's role in gridhost.io? +

Raynora Solar is the residential energy operator that runs gridhost.io. Raynora has been installing solar, batteries, and electrical infrastructure since 2023 and serves 37 markets today, with AURA℠ lease-to-own available in 16 states. Our crews, our 10-year workmanship and roof penetration warranties, and our financing paths handle every gridhost.io install. Raynora is headquartered in Bethesda, MD with offices in Herndon, VA and Jersey City, NJ.

How does AURA℠ work with XFRA pre-positioning? +

AURA℠ is Raynora's 25-year lease-to-own solar structure. The system owner holds the system and claims the 30% federal Investment Tax Credit under Section 48E, and that value is captured on your behalf and reflected in your price. You never claim the credit yourself and it is never paid to you. A purchase option starts at the 6-year anniversary at fair market value, and the lease transfers on home sale. For XFRA pre-positioning, AURA℠ lets you install solar, SPAN, and battery together while the federal credit still exists: the residential credit under Section 25D expired at the end of 2025, and Section 48E closes for new projects that are not placed in service by December 31, 2027.

Can renters host an XFRA node? +

The XFRA white paper focuses on owner-occupied homes and build-to-rent operators. Individual renters cannot install a SPAN smart panel without their landlord's authorization, so XFRA hosting in single-family rentals depends on the property owner. For build-to-rent operators considering pre-installing XFRA-ready hardware across their portfolios, gridhost.io routes those conversations to Raynora's commercial team. AURA℠ also works on long-term rental properties, vacation homes, and Airbnb/VRBO short-term rentals.

How much does it cost to get XFRA-ready? +

The full pre-positioning install (solar, SPAN smart panel, whole-home battery) typically runs $30,000 to $60,000 before incentives, depending on home size, panel count, and battery capacity selected. Where AURA℠ is available, it is structured as a 25-year lease-to-own, with $0 down on financed projects and the 30% federal credit captured on your behalf and reflected in your price. Raynora's $89 Readiness Audit produces a personalized cost-and-yield model for your specific home, utility, and internet plan.

Ready when you are

The retrofit channel opens in 2027.

Homes with a SPAN smart panel installed before then are explicitly first in line. There is exactly one action you can take today that matters, and it takes less than 60 seconds to start.