Choosing solar monitoring software: four approaches

Start with the system you already have

If your installation already revolves around Victron equipment and a GX device, examine that path first. If you want a dedicated monitor beside a supported inverter, compare focused monitoring appliances. If the real goal is to coordinate energy with the rest of a smart home, evaluate the integrations and maintenance that come with a home-automation platform.

This is a documentation-based comparison, checked October 10, 2026, published by Sunstead. It is not a hands-on benchmark or an independent product review. Features depend on the exact equipment and software release. The aim is to make a shortlist worth testing, rather than declare a universal winner.

Four different starting points

Sunstead: a display-centered route

Sunstead collects readings at home and can show the same host on a satellite screen. Its software and OS are free; prebuilt hardware adds the display, enclosure and assembly. Hosted remote viewing is read-only. Confirm the available device protocols before choosing either route.

The immediate limitation for DIY users is release maturity: the downloadable image is currently Pi 5 only, and physical first-boot testing is pending. A Pi 4 download is not yet available. The current release page states those limits. Choose this route if the equipment match and present release status suit the installation you are planning.

SolarAssistant: dedicated monitoring with an integration path

SolarAssistant’s introduction describes a Raspberry Pi connected to an inverter and optionally a battery BMS. Its access guide documents on-device data, LAN access and a provided remote-access service. For an offline property, check its activation instructions: a software installation needs internet activation before offline use; purchased complete devices are already activated.

SolarAssistant also documents an official Home Assistant integration, while retaining an MQTT route. This makes dedicated collection plus a separate home-automation system a real option to investigate. You do not have to assume one application must perform both jobs.

Victron: distinguish the local platform from the portal

Victron’s GX product documentation describes a local communications hub connecting supported equipment. Venus OS runs the GX platform; VRM is the remote service. The VRM manual documents remote monitoring, historical dashboards, alarms and supported device controls through connected hardware.

For an existing Victron installation, first inventory what your GX already receives. That may make adding another collector unnecessary. For mixed equipment, use the model-specific compatibility documentation rather than assuming a third-party device works because it has a familiar communications port.

Home Assistant: inspect the integration, not just the dashboard

Home Assistant can obtain solar data from supported inverter APIs or suitable metering, as described in its solar integration guide. Connection behavior varies. For example, the official SMA integration is local polling and explicitly excludes some models. A brand name in the integration directory is not coverage for that brand’s entire catalog.

Its Energy dashboard documentation also distinguishes energy, power and battery sensors. Plan how the required values will arrive before designing automations around them. This route suits someone willing to own the integrations, entity configuration and ongoing updates for the wider home system.

Use the same acceptance test for your shortlist

Write three questions the system must answer—for example, current battery charge, overnight consumption and whether the host is reachable while away. For each candidate, record the exact device connection, the data needed, and a test you can perform. An unsupported field should eliminate a candidate only if that field is essential to your task.

Compare the full setup cost: host, interface cables, display, storage, software or service charges and your maintenance time. Check current vendor pricing directly; a headline software price is not the cost of an installed system. Keep read access and equipment control as separate requirements. Then use the compatibility worksheet to verify the option you prefer.