OpenSolar vs PVsyst:Which is more popular?
In September 2026, PVsyst had more branded searches than OpenSolar among solar design software worldwide. PVsyst had about 22,200 branded searches, while OpenSolar had 14,800. PVsyst made up 32.3% of all solar design software searches we track, and OpenSolar accounted for 21.6%. When we asked ChatGPT and Google AI Overviews about solar design software, OpenSolar appeared in all five answers and PVsyst in four. OpenSolar was mentioned before PVsyst in three out of five answers.
Who do people search for more?
PVsyst, about 50% more searches than OpenSolar
Who does AI mention more?
OpenSolar, mentioned in every answer we collected
Who does AI recommend more?
OpenSolar, named ahead of PVsyst in 3 of 5 answers
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Top solar design software in ChatGPT and Google AI Overviews
In three ChatGPT questions and two Google AI Overviews, OpenSolar appeared in all five answers. PVsyst was mentioned in four out of five: in all three ChatGPT answers and in one of the two Google AI Overviews. OpenSolar was listed before PVsyst in three out of five answers.
Most recommended by AI
Brands get a higher ranking if they are mentioned earlier in the answers.
Aurora Solar1st- OpenSolar2nd
- PVsyst3rd
- HelioScope4th
Pylon5th- PVcase6th
Solargraf7th
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
- OpenSolar5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- Aurora Solar5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- PVsyst4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- HelioScope4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- PVcase2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- Pylon2 of 5Named in 0 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- Solargraf1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers
See every answer about solar design software
5 answers
Asked ChatGPT
“Which solar design software should I use?”
Asked ChatGPT
“What are the best solar design software tools?”
Asked ChatGPT
“What's the best solar design software for solar system design?”
Searched Google, AI Overview
“solar design software”
Searched Google, AI Overview
“solar proposal software”
Brands are shown in the order each answer named them. The survey took place in the United States on October 21, 2026.
Is OpenSolar or PVsyst more popular in search?
This chart shows how often people search Google for OpenSolar and PVsyst by name. Each line represents a brand's share of searches for all seven solar design software we track, month by month, from English-language searches worldwide.
Share of searches by month for PVsyst, OpenSolar. The figures are in the table below the chart.
View monthly share of searches table
| Month | PVsyst | HelioScope | OpenSolar | Aurora Solar | PVcase | Pylon | Solargraf |
|---|---|---|---|---|---|---|---|
| Oct 2025 | 32.9% | 22% | 18% | 18% | 4.4% | 2.4% | 2.3% |
| Nov 2025 | 36.4% | 24.3% | 16.2% | 13.3% | 4.8% | 2.8% | 2.1% |
| Dec 2025 | 36.5% | 24.4% | 16.3% | 13.3% | 4.8% | 2.6% | 2.1% |
| Jan 2026 | 30.9% | 25.2% | 16.8% | 16.8% | 5% | 3% | 2.2% |
| Feb 2026 | 29.7% | 24.2% | 19.8% | 16.2% | 4.8% | 3.2% | 2.1% |
| Mar 2026 | 32.6% | 21.7% | 21.7% | 14.5% | 4.3% | 2.8% | 2.3% |
| Apr 2026 | 31.6% | 21.1% | 21.1% | 17.2% | 4.2% | 2.6% | 2.2% |
| May 2026 | 34.2% | 22.8% | 18.7% | 15.3% | 4.5% | 2.4% | 2% |
| Jun 2026 | 31.2% | 20.8% | 20.8% | 17% | 5.1% | 2.9% | 2.2% |
| Jul 2026 | 31.5% | 21% | 21% | 17.2% | 4.1% | 2.8% | 2.3% |
| Aug 2026 | 32.6% | 21.7% | 21.7% | 14.5% | 4.3% | 2.9% | 2.3% |
| Sep 2026 | 32.3% | 21.6% | 21.6% | 14.4% | 5.2% | 2.6% | 2.3% |
How has the OpenSolar and PVsyst comparison changed over the last 12 months?
3 findings
- PVsyst was ahead of OpenSolar in every measured month of the 12 months ending September 2026.
- Across the 12 months ending September 2026, OpenSolar’s share of searches among solar design software worldwide moved from 18% to 21.6%, and its estimated monthly branded searches held steady at 14.8K.
- Across the 12 months ending September 2026, PVsyst’s share of searches among solar design software worldwide moved from 32.9% to 32.3%, and its estimated monthly branded searches moved from 27.1K to 22.2K.
How did search popularity change for solar design software worldwide in September 2026?
1 change
Estimated monthly branded searches for PVsyst worldwide fell 18.1% over 12 measured months, from 27.1K to 22.2K in September 2026.
How are branded searches counted?
2 search terms
Brandwave collects information about searches that people make online using OpenSolar’s and PVsyst’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.
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