Softwr

Software · head to head

ESPHome vs Fronius SOLARWEB

ESPHome logo

ESPHome

Software

Custom firmware for ESP8266/ESP32 smart home devices

From
Free
Rated
-
Full reviewWebsite
Fronius SOLARWEB logo

Fronius SOLARWEB

Software

Solar inverter monitoring and analytics platform

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: ESPHome eSPHome runs only on supported microcontrollers; the project recommends ESP32, ESP32-S3, ESP32-C3 and ESP32-C6 and advises against ESP8266 for new projects; Fronius SOLARWEB only works optimally with Fronius hardware; monitoring of third-party inverters is not supported
  • They diverge on capability: ESPHome covers YAML Configuration, Fronius SOLARWEB covers Real-time monitoring.

Where they differ

Only the attributes on which ESPHome and Fronius SOLARWEB actually diverge.

Attributes where ESPHome and Fronius SOLARWEB differ
AttributeESPHomeFronius SOLARWEB
Pricing modelopen-sourceUnknown
PlatformsESP8266, ESP32, Docker, Raspberry PiWeb, iOS, Android
Founded20181945

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Unknown).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in ESPHome

  • YAML Configuration
  • OTA Updates
  • Home Assistant Native
  • Custom Components
  • Home Assistant
  • MQTT
  • API
  • Native integration

Only in Fronius SOLARWEB

  • Real-time monitoring
  • Performance analytics
  • System optimization
  • Alert notifications
  • Mobile app
  • SSL encryption
  • Cloud deployment
  • Web support

What people use each for

The jobs each tool is most often brought in to do.

ESPHome

  • Building custom smart home sensors and switches on ESP32 hardwarenot Fronius SOLARWEB
  • Replacing vendor cloud firmware on ESP based devices with locally controlled firmwarenot Fronius SOLARWEB
  • Integrating DIY devices into Home Assistant over a native API or MQTTnot Fronius SOLARWEB

Fronius SOLARWEB

  • System monitoringnot ESPHome
  • Performance trackingnot ESPHome

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

ESPHome

  • ESPHome runs only on supported microcontrollers; the project recommends ESP32, ESP32-S3, ESP32-C3 and ESP32-C6 and advises against ESP8266 for new projects
  • Support for ESP32-H2, RP2040 and other newer chips is documented as less mature
  • Large displays and some sensors do not work well on ESP8266 because of its limited RAM, which is roughly a fifth of an ESP32

Fronius SOLARWEB

  • Only works optimally with Fronius hardware; monitoring of third-party inverters is not supported
  • Advanced historical analytics and forecasting features require paid premium subscription
  • Requires stable internet connectivity and cloud connection for all functionality
  • String-level diagnostics require onsite inspection to identify which panel within a string is failing

Pricing, plan by plan

ESPHome

Free
  • CommunityFree
    • Full firmware
    • Home Assistant integration
    • Custom sensors

Fronius SOLARWEB

Free
  • BasicFree
    • Real-time energy monitoring
    • Daily/monthly/yearly production charts
    • Battery storage monitoring

Which should you pick?

Choose ESPHome if

  • You need yaml configuration.
  • You want to start without paying.
  • You work on ESP8266, ESP32, Docker, Raspberry Pi.
  • You also want ota updates.
ESPHome review

Choose Fronius SOLARWEB if

  • You need real-time monitoring.
  • You want to start without paying.
  • You work on Web, iOS, Android.
  • You also want performance analytics.
Fronius SOLARWEB review

Questions people ask

Is ESPHome or Fronius SOLARWEB better?
Neither clearly leads. ESPHome starts at Free and Fronius SOLARWEB at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, ESPHome or Fronius SOLARWEB?
ESPHome starts at Free and Fronius SOLARWEB at Free.
Does ESPHome or Fronius SOLARWEB run on more platforms?
ESPHome runs on ESP8266, ESP32, Docker, Raspberry Pi. Fronius SOLARWEB runs on Web, iOS, Android.
Can I use ESPHome for free?
Both have a free tier, so you can try either at no cost before committing.
What is ESPHome best used for?
ESPHome is most often used for building custom smart home sensors and switches on esp32 hardware, replacing vendor cloud firmware on esp based devices with locally controlled firmware, integrating diy devices into home assistant over a native api or mqtt. Of those, building custom smart home sensors and switches on esp32 hardware and replacing vendor cloud firmware on esp based devices with locally controlled firmware are not what Fronius SOLARWEB is typically brought in for.
What can ESPHome do that Fronius SOLARWEB cannot?
ESPHome covers YAML Configuration, OTA Updates, Home Assistant Native, Custom Components. Fronius SOLARWEB covers Real-time monitoring, Performance analytics, System optimization, Alert notifications.

Answered from the vendors’ own pages

Fronius SOLARWEB: Does Fronius Solar.web work offline?

No, Fronius Solar.web requires stable internet connectivity as it is a cloud-based monitoring platform.

Source
Fronius SOLARWEB: What is the cost of Fronius Solar.web?

The basic version is completely free for registered Fronius hardware users. A premium subscription is available for advanced analytics and forecasting features, though specific pricing is not disclosed on the website.

Source
Fronius SOLARWEB: What Fronius products work with Solar.web?

Solar.web monitors Fronius inverters, smart meters, battery storage systems, and EV charging products. Advanced features like energy optimization require compatible GEN24/Verto inverters.

Source
Fronius SOLARWEB: Does Fronius Solar.web have a mobile app?

Yes, Solar.web offers native iOS and Android mobile applications for real-time monitoring.

Source
ShareXLinkedInRedditWhatsAppEmail

Related pages

More on ESPHome

More on Fronius SOLARWEB

Keep looking

Other head to heads