Home Assistant Alexa Integration: Nabu Casa vs Emulated Hue vs Matter Bridge (2026 Guide)

Three ways to connect Home Assistant to Alexa in 2026 — Nabu Casa Cloud, Emulated Hue and Matter Bridge compared by cost, entity support and privacy.

Last verified: February 2026, against Home Assistant 2026.x release notes and the manufacturer documentation cited in each section. This guide is re-verified on a quarterly schedule.

Home Assistant can run heating schedules, presence logic and multi-room lighting in a way no voice assistant manages on its own — but Alexa is the interface your household actually shouts at from the kitchen. A working Home Assistant Alexa integration is the piece that lets the capable system drive the convenient one, and in 2026 there are three practical routes between them, not one. Two push your Home Assistant devices into Alexa so they can be controlled by voice; one pulls your Echo hardware into Home Assistant so automations can fire announcements. Each route differs sharply on cost, on which device types Alexa can recognise, and on how much of your home leaves your network.

Sorting them out before you buy matters, because the routes are largely free to try and the mistakes are expensive to inherit: an endpoint speaker bought for the wrong bridge, or a subscription taken out for device types it doesn’t expose. For context on how widely Alexa is already embedded in British homes, Ofcom’s Communications Market Report — the regulator’s annual assessment of the UK communications market — is the standard reference for smart-speaker ownership, and worth checking for the current figure rather than trusting a number recycled from a forum post.

Quick picks

How to choose: what actually separates the three routes

Three questions decide the answer, and they’re worth answering before you touch a settings menu.

Which device types do you want Alexa to control? In Home Assistant, an entity is one controllable thing — a lamp, a plug, a blind, a thermostat. Each route decides which entity types Alexa can recognise as native device types, meaning a “cover” entity appears as a blind or garage door you can open by voice, while a “climate” entity appears as a thermostat rather than an anonymous switch. Get this wrong and your devices still work in the Home Assistant app; they simply never show up in the Alexa app in a useful form.

Local or cloud? A local route moves commands across your own network. A cloud route relays them through a third-party server. That distinction governs whether voice control of your devices survives a broadband outage, and how much information about your home leaves the building. Note the important caveat that applies to all three routes: when you speak, the audio still goes to Amazon for processing. Local control covers the device leg, not the voice leg.

What hardware do you already own? Two of the three routes cost nothing, but one of them depends entirely on which Echo models you have on the shelf — and the generation printed on the bottom of the speaker determines whether it works. Beyond the bridges, you may also need a box to run Home Assistant itself, which is where a plug-and-play host such as Home Assistant Green comes in.

Cost is the last filter rather than the first. Two of the three routes are free forever; the paid one buys convenience and coverage. The three-year comparison at the end of this guide sets the numbers side by side.

Nabu Casa Home Assistant Cloud: the official skill

Best for: anyone who wants Alexa to see as much of their home as possible, with the least ongoing fiddling.

Nabu Casa Home Assistant Cloud is the official subscription from the Home Assistant team, and it is the route most users end up on. It enables a proper Alexa smart home skill: you link your account once inside the Alexa app, then choose which entities to expose from Home Assistant’s own settings panel, so exposure stays under your control rather than being decided on the Amazon side.

What it costs. Pricing is set in US dollars and published on Nabu Casa’s pricing page: $7.49 per month or $75 per year as of the date checked. Annual billing works out cheaper than twelve monthly payments. UK buyers should expect two wrinkles. First, your card is billed in USD, so your bank applies its own foreign-exchange fee and the sterling figure moves with the market — the conversions used throughout this guide assume a rate in the region of $1.25–$1.35 to the pound, which lands the subscription at roughly £6–£8 per month or around £65–£90 per year. Second, no VAT is added at source, so there is no separate tax line to budget for. That works out at approximately £195–£270 across three years at annual billing, before any bank fee.

What it exposes. Coverage is the widest of the three routes. If you want Alexa to control a thermostat or close a garage door by voice, this is realistically the route to use. The authority is Nabu Casa’s own supported-entities documentation, and it is worth reading before you subscribe rather than after — community threads regularly flag two weak spots, robot vacuums and media-player transport controls, where exposure tends to be partial or unreliable.

Privacy and remote access. Commands relay via Nabu Casa’s servers, so this route is not local. In exchange you get no port forwarding, no dynamic DNS and no exposed home network, plus remote access to the Home Assistant app while you’re away and Google Assistant support bundled into the same subscription.

One honest caveat: you are paying a recurring fee for something two free routes do locally — and you are depending on a relay that sits between your home and Amazon.

Verdict: the pragmatic default for anyone with climate devices, locks or a mixed-brand setup, and the only route that covers device types the other two simply cannot present.

Where to buy: direct from Nabu Casa only — there is no affiliate route, and any third-party “reseller” should be treated with suspicion.

Emulated Hue: the free local workaround

Best for: households that mainly want lights and switches under voice control and would rather not pay a subscription.

Emulated Hue is a built-in Home Assistant integration that makes your instance impersonate a Philips Hue bridge on your local network. Alexa discovers it exactly as it would discover a real Hue bridge, then imports whatever you expose as lights and switches. Setup needs no cloud account, no port forwarding and no dynamic DNS — and because commands travel directly across your LAN rather than round-tripping through a third-party server, your devices stay voice-controllable when the broadband drops.

What it costs: nothing. It ships inside Home Assistant, and there is no hardware to buy.

Check the status label first. Home Assistant’s own Emulated Hue integration page carries a status label for the integration, and that label — legacy, active or deprecated — is the definitive statement on its standing with the maintainers. Treat it as the authority rather than forum opinion, and read it before you build your whole voice setup around this route.

Known quirks worth knowing before you start. Two come up repeatedly. The first is colour temperature: Emulated Hue has to translate Alexa’s colour-temperature commands into Home Assistant’s light attributes, and that translation does not always land where you expect. Long-running threads on the Home Assistant Community forum document this inconsistency, so if precise warm-white control matters to you, test it on one lamp before rolling it out across the house. The second is duplicate entities — the same device appearing more than once in the Alexa app. The documented fix is to give the Home Assistant host a DHCP reservation or static IP address, then remove the bridge in the Alexa app and add it again, which forces Alexa to rediscover the devices cleanly. The GitHub issue threads tracking this behaviour describe the same sequence.

One honest caveat: device scope. Emulated Hue is designed around lights and switches and does not present covers, climate devices or media players to Alexa as those device types — a thermostat will not appear as a thermostat here.

Verdict: the best zero-cost option if your ambitions stop at lighting and plugs, and a sensible first experiment before committing to a subscription.

Where to buy: nothing to buy — it is already part of your Home Assistant installation.

Matter Bridge: the free local route for modern Echo hardware

Best for: anyone who already owns a recent Echo and wants local control without a subscription.

Matter Bridge exposes Home Assistant entities as Matter devices, which a Matter controller — in practice, a recent Echo — can then see and control. Like Emulated Hue it is built into Home Assistant and costs nothing, but unlike Emulated Hue it can present a much broader set of device types.

The prerequisite that catches people out. Thread-based devices need a Thread border router, and not every Echo model qualifies. Confirmed against Amazon’s Matter support page as acting as Matter controllers or Thread border routers: Echo Dot (4th Gen), Echo Dot (5th Gen), Echo Show 8 (3rd Gen) and Echo (4th Gen). The Echo Dot (3rd Gen) does not function as a Matter controller, so an older Dot in a bedroom cannot serve as the bridge endpoint no matter how it is configured.

Device-type support. Home Assistant’s Matter Bridge integration documentation covers lights, plugs, sensors, covers and locks. Support for climate devices and media players should be verified against the current version of that documentation before you rely on it, since Matter’s device-type coverage continues to develop and the docs are the accurate record.

The voice leg. It is worth being precise here, because “local” is often oversold. Only device control runs locally with Matter Bridge. Amazon’s cloud still processes the voice request itself, as Amazon’s Matter controller documentation sets out — so the audio still leaves your home even though the command that follows does not.

One honest caveat: the hardware prerequisite. If you own an Echo Dot (3rd Gen) or a non-Echo controller, the free route becomes a hardware purchase.

Verdict: the strongest free option in 2026 for modern setups, provided your Echo hardware is recent enough to act as the controller.

Where to buy: nothing to buy for the integration itself; qualifying Echo hardware is sold through Amazon UK and other mainstream electronics retailers.

Alexa Media Player: the endpoint add-on, not a fourth route

Best for: adding spoken announcements and Echo-side routines to an existing setup.

Alexa Media Player is worth mentioning because it solves the opposite problem to the three routes above. Rather than pushing Home Assistant devices into Alexa, it pulls your Echo hardware into Home Assistant — so an automation can trigger an announcement through a specific speaker, or fire an Alexa routine. It sits alongside one of the three routes; it is not a replacement for any of them, and treating it as a fourth route leads to confusion when your lights still don’t show up in the Alexa app.

What it costs: nothing, but with a maintenance caveat.

How it’s distributed. It is HACS-only — installed through the Home Assistant Community Store — and it is community-maintained. It is not officially supported by Home Assistant, and it has broken historically when Amazon changed things at its end. Before you install it, check its GitHub releases and issues page for the current maintenance status; that page is the honest indicator of whether it is healthy right now.

One honest caveat: because it depends on Amazon-side behaviour it does not control, it is the most fragile component in a typical setup. Keep your automations functional without it.

Verdict: excellent value as a layer on top of a working bridge, and a poor foundation to build on.

Where to buy: free — install it through HACS.

Echo hardware: the Amazon Echo Dot (5th Gen) as an endpoint

Best for: a cheap voice endpoint that doubles as an announcement speaker.

The Amazon Echo Dot (5th Gen) is the sensible default endpoint for a Home Assistant setup. According to Amazon’s Matter support page it qualifies as a Matter controller and Thread border router, which makes it the hardware half of the Matter Bridge route — and via Alexa Media Player it doubles as a text-to-speech announcement speaker for Home Assistant automations, which is genuinely useful for things like a doorbell or a washing-machine-finished alert.

What it costs: typically around £30–£55 on Amazon UK depending on promotions. Amazon runs frequent discounts on Echo hardware, so the figure moves; check the current Amazon UK listing, and confirm the model year shown is the 5th Gen before ordering, since older stock circulates alongside it.

One honest caveat: an Echo Dot is an endpoint, not a bridge. On its own it gives Alexa no visibility of your Home Assistant entities whatsoever — you still need one of the three routes above. Buy it after you’ve chosen the route, not instead of choosing one.

Verdict: the cheapest sensible way to add a voice endpoint and an announcement speaker in one purchase, provided your Echo is a 5th Gen or another qualifying model.

Where to buy: Amazon UK.

Home Assistant Green: the plug-and-play host

Best for: anyone who wants Home Assistant running without sourcing and configuring their own hardware.

Home Assistant Green is the official plug-and-play host. It is fanless — so there is no fan noise in a living room cupboard — and it arrives pre-flashed with Home Assistant OS, which removes the entire installation step that puts most people off the platform. It supports both the free Emulated Hue integration and the Matter Bridge, so neither of the two zero-cost routes is closed off by choosing it.

What it costs: a one-off hardware purchase rather than a subscription; check current UK pricing and stock at the time you order.

One honest caveat: it adds no Alexa capability of its own. It is the box that runs Home Assistant — you still need one of the three routes to connect it to Alexa.

Verdict: the least painful way to get a stable Home Assistant host, and the right buy if you don’t already have spare hardware to run it on.

Where to buy: typically stocked through the official Home Assistant store and specialist smart-home retailers in the UK.

Alexa+ and what it means for your setup

Amazon’s LLM-based Alexa+, announced in 2025 and rolling out through 2026, changes how Alexa interprets what you ask it, and the sensible position is caution rather than planning. Amazon’s Alexa+ help pages are the place to check availability and behaviour, and they should be read as the authority on what the assistant does in your region.

The practical point for Home Assistant users is that skill and device-exposure behaviour may differ under Alexa+, and there is not yet a definitive answer about how it treats Home Assistant entities. Treat it as evolving: the three routes described above remain the stable layer, and any changes Alexa+ brings will land on top of them rather than replacing them. Don’t rebuild a working setup around an assistant mid-rollout.

UK practical notes: billing, tax and where to buy

Two of the three routes are free and built in, so the only recurring cost in a typical setup is Nabu Casa. That subscription is billed in USD, which means a UK card is charged in dollars and your bank applies its own foreign-exchange fee on top — a small but real addition to the sterling figure. No VAT is added at source, so the amount shown is the amount charged, with the FX fee the only extra to expect. Annual billing costs less than twelve monthly payments, which is the main lever you have on the running cost.

Hardware is a domestic purchase. Echo devices including the Echo Dot (5th Gen) are sold through Amazon UK, and any UK retailer stocking Amazon hardware can supply a qualifying model — check the generation, because only the models listed earlier act as Matter controllers.

Three-year cost comparison

• Emulated Hue: £0 over three years. Nothing to buy, nothing to renew.
• Matter Bridge: £0 for the integration, plus hardware if you don’t already own a qualifying Echo — an Echo Dot (5th Gen) at typically around £30–£55 covers it.
• Nabu Casa Home Assistant Cloud: approximately £195–£270 across three years at annual billing, calculated from the published $75/year figure at recent exchange rates. Add your bank’s FX fee on each renewal. Monthly billing costs more over the same period.

Those figures are approximations, not quotations: the sterling amounts move with the exchange rate and Amazon’s promotions.

FAQ

Is the Home Assistant Alexa integration free? Two of the three routes are free. Emulated Hue and Matter Bridge both ship inside Home Assistant at no cost, and both keep device control on your local network. Nabu Casa Home Assistant Cloud is the paid option, at $7.49 per month or $75 per year billed in USD. Which you choose depends on the device types you need Alexa to recognise, not on the price alone.

Which Echo devices work as a Matter controller with Home Assistant? Per Amazon’s Matter support page, the Echo Dot (4th Gen), Echo Dot (5th Gen), Echo Show 8 (3rd Gen) and Echo (4th Gen) act as Matter controllers or Thread border routers. The Echo Dot (3rd Gen) does not. If your only Echo is a 3rd Gen Dot, the Matter Bridge route needs new hardware before it will work at all.

Can Alexa control my Home Assistant devices if the internet goes down? Partly. With Emulated Hue or Matter Bridge, device control runs locally, so voice control of exposed devices survives an outage. But the voice leg always goes to Amazon’s cloud, as Amazon’s Matter controller documentation makes clear, so a full broadband failure still stops you speaking to the assistant. Nabu Casa relays commands through its servers and is not local at all.

Why is Alexa showing duplicate devices from my Home Assistant? This is a documented Emulated Hue quirk, and the usual cause is the Home Assistant host picking up a different IP address, so Alexa rediscovers the bridge and re-imports everything alongside the original devices. The fix recorded in the relevant GitHub issue threads is to set a DHCP reservation or static IP for the Home Assistant host, then remove the bridge in the Alexa app and add it again.

Do I pay VAT on Nabu Casa in the UK? No VAT is added at source — the published dollar price is what is charged. Your bank will apply a foreign-exchange fee because the subscription is billed in USD, and sterling prices shift with the exchange rate. Annual billing at $75 per year works out cheaper than twelve monthly payments of $7.49.

Why can’t Alexa see my thermostat or robot vacuum? It depends on the route. Emulated Hue is built around lights and switches and won’t present covers, climate devices or media players as those device types. Nabu Casa has the widest coverage and is the realistic route for a thermostat or garage door, but community threads commonly report robot vacuums and media-player transport controls as weak spots — check Nabu Casa’s supported-entities documentation before subscribing for those specifically. For Matter Bridge, verify climate and media-player support against the current Home Assistant Matter Bridge documentation.

Is Alexa Media Player officially supported by Home Assistant? No. It is HACS-only and community-maintained, and it is not officially supported by Home Assistant. It has broken in the past when Amazon changed behaviour on its side, so its GitHub releases and issues page is the place to check current maintenance status. It is an endpoint add-on for announcements and routines, not one of the three bridge routes.

The bottom line

If you want Alexa to control as much of your home as possible and you’d rather not maintain it yourself, Nabu Casa Home Assistant Cloud is the route to take — at roughly £65–£90 per year, billed in dollars, with the widest entity coverage and the least setup. If your needs are lights and plugs and you’d rather pay nothing, start with Emulated Hue, but read its integration page status label first. If you already own a recent Echo, Matter Bridge gives you local control across lights, plugs, sensors, covers and locks at no cost. Whichever you choose, add an Echo Dot (5th Gen) as the endpoint, and treat Alexa Media Player as the announcement layer on top rather than a route in its own right.