HomeWizard P1 Meter

Quick verdict

If you have a Dutch or Belgian smart meter, this is the easiest way to get real-time energy data into Home Assistant. Plug it into the P1 port, connect to WiFi, and you immediately have live consumption and production data flowing into Home Assistant's energy dashboard via a local API. No cloud, no subscription, no complicated setup. The HomeWizard Energy integration in Home Assistant is rated excellent for good reason. It just works.

Standout: Reads real-time energy data from Dutch/Belgian P1 smart meters with a fully local API.

Notes last checked Mar 22, 2026.

Compatibility snapshot

Why it stands out

• plug-and-play energy monitoring. Just connect to your smart meter's P1 port
• excellent Home Assistant integration with local API and real-time energy data
• no cloud dependency, and all data is available locally on your network

Reasons to hesitate

• works only with smart meters that have a P1 port - common in the Netherlands, Belgium, and Luxembourg (and, with a key or converter, Denmark, Sweden, and Switzerland)
• WiFi-only means it depends on your wireless network reliability
• no per-circuit breakdown, so it shows total household consumption and production only

Best for

• Dutch and Belgian homeowners who want real-time energy data in Home Assistant
• users who want to feed accurate grid data into Home Assistant's energy dashboard

Avoid if

• your smart meter has no P1 port (common outside NL/BE/LU and the Nordics)
• you need per-circuit energy monitoring. A CT clamp system is what you want

Privacy and local-control notes

Fully local WiFi device with a local API. No cloud required. HomeWizard's integration in Home Assistant uses local polling only.

Home Assistant support: supported · integration path: HomeWizard Energy.

Buying reality check

Price notes: Very reasonable for what you get. Real-time whole-home energy monitoring with no subscription or ongoing costs.

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