Energy & Utilities · head to head
OSIsoft PI System vs Fronius SOLARWEB

OSIsoft PI System
Energy & Utilities
Real-time operational intelligence for industrial operations
- From
- On request
- Rated
- -

Fronius SOLARWEB
Energy & Utilities
Solar inverter monitoring and analytics platform
- From
- Free
- Rated
- -
The short version
- Only Fronius SOLARWEB has a free tier, so it costs nothing to try first.
- Each has a real cost: OSIsoft PI System oSIsoft is now AVEVA and osisoft.com redirects to the AVEVA PI System pages; Fronius SOLARWEB only works optimally with Fronius hardware; monitoring of third-party inverters is not supported
- They diverge on capability: OSIsoft PI System covers Real-time data collection, Fronius SOLARWEB covers Real-time monitoring.
Where they differ
Only the attributes on which OSIsoft PI System and Fronius SOLARWEB actually diverge.
| Attribute | OSIsoft PI System | Fronius SOLARWEB |
|---|---|---|
| Starting price | On request | Free |
| Pricing model | quote | Unknown |
| Free tier | No | Yes |
| Platforms | Windows, Web, Api | Web, iOS, Android |
| Founded | 1980 | 1945 |
Identical on both: user rating (Not yet rated), category (Energy & Utilities).
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 OSIsoft PI System
- Real-time data collection
- Time-series data storage
- Advanced analytics
- Asset framework
- Visualization tools
- Event frames
- Data compression
- Notifications and alerts
Only in Fronius SOLARWEB
- Real-time monitoring
- Performance analytics
- System optimization
- Alert notifications
- Mobile app
- Cloud deployment
- Web support
- Mobile support
Both cover
- SSL encryption
What people use each for
The jobs each tool is most often brought in to do.
OSIsoft PI System
- Collecting and historising high frequency industrial process and sensor datanot Fronius SOLARWEB
- Operations dashboards and trend analysis for plants and utilitiesnot Fronius SOLARWEB
- Feeding real time operational data into analytics and digital twin applicationsnot Fronius SOLARWEB
Fronius SOLARWEB
- System monitoringnot OSIsoft PI System
- Performance trackingnot OSIsoft PI System
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
OSIsoft PI System
- OSIsoft is now AVEVA and osisoft.com redirects to the AVEVA PI System pages
- No pricing is published; osisoft.com/pricing resolves to AVEVA product pages with no rate, minimum or cost driver
- Licensing runs through the AVEVA Flex Subscription Program rather than a published per-seat or per-tag price
- The PI System is split across separately listed products including PI Server, PI Vision, PI Data Infrastructure and Edge Data Store
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
OSIsoft PI System
On requestNo published plan breakdown. See the OSIsoft PI System review.
Fronius SOLARWEB
Free- BasicFree
- Real-time energy monitoring
- Daily/monthly/yearly production charts
- Battery storage monitoring
Which should you pick?
Choose OSIsoft PI System if
- You need real-time data collection.
- You work on Windows, Web, Api.
- You also want time-series data storage.
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.
Questions people ask
- Is OSIsoft PI System or Fronius SOLARWEB better?
- Neither clearly leads. OSIsoft PI System starts at On request and Fronius SOLARWEB at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, OSIsoft PI System or Fronius SOLARWEB?
- Fronius SOLARWEB has a free tier; the other does not. Paid plans start at On request for OSIsoft PI System and Free for Fronius SOLARWEB.
- Does OSIsoft PI System or Fronius SOLARWEB run on more platforms?
- OSIsoft PI System runs on Windows, Web, Api. Fronius SOLARWEB runs on Web, iOS, Android.
- Can I use Fronius SOLARWEB for free?
- Yes. Fronius SOLARWEB has a free tier, so you can try it without paying. OSIsoft PI System starts at On request.
- What is OSIsoft PI System best used for?
- OSIsoft PI System is most often used for collecting and historising high frequency industrial process and sensor data, operations dashboards and trend analysis for plants and utilities, feeding real time operational data into analytics and digital twin applications. Of those, collecting and historising high frequency industrial process and sensor data and operations dashboards and trend analysis for plants and utilities are not what Fronius SOLARWEB is typically brought in for.
- What can OSIsoft PI System do that Fronius SOLARWEB cannot?
- OSIsoft PI System covers Real-time data collection, Time-series data storage, Advanced analytics, Asset framework. Fronius SOLARWEB covers Real-time monitoring, Performance analytics, System optimization, Alert notifications. Both handle SSL encryption.
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.
SourceFronius 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.
SourceFronius 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.
SourceFronius SOLARWEB: Does Fronius Solar.web have a mobile app?
Yes, Solar.web offers native iOS and Android mobile applications for real-time monitoring.
Source