Easy PV
Midsummer
Design & simulation · Web
Comparison
19 differences · 12 identical
The differences that matter most
They differ most on price published. HELIOS 3D publishes Not publicly disclosed; PVsyst publishes CHF 700. They use different pricing models, so those figures do not compare directly.
We do not name a winner. Below are 19 differences drawn from the same sourced dataset that powers both product pages.
Verified against the vendor’s own pages.
These cannot be compared on a single number
HELIOS 3D is priced quote-only and PVsyst is priced per-seat. These are different pricing models, so a single side-by-side figure would be misleading. Each is shown as its vendor states it.
HELIOS 3D
Not publicly disclosed
Quote only
PVsyst
CHF 700
700 CHF per year
Per seat
Prices are shown exactly as each vendor writes them and are never converted between currencies.
19 differences, ordered by how much they are likely to matter — pricing transparency first, then capabilities the vendor explicitly confirms or denies.
| Capability | HELIOS 3D | PVsyst |
|---|---|---|
| Solar design & simulation | ||
| Battery sizing and modelling | — Not found | Advanced Verified |
| Single-line diagram | Advanced Verified | — Not found |
| Annual energy yield simulation | Basic Vendor claim | Advanced Verified |
| CAD export (DXF/DWG) | Yes Verified | Yes Vendor claim |
| Proposals & sales | ||
| E-signature | — Not found | — Could not read |
| Estimation & financial modelling | ||
| ROI / payback calculation | — Not found | Advanced Verified |
| Integrations & extensibility | ||
| Public API | — Not found | Advanced Verified |
| Named, documented integrations | 1 Verified | 15 Verified |
| Platform & deployment | ||
| Desktop OS support | — Could not read | Windows 8/10/11 32/64-bit; NOT Citrix, Remote Desktop, Azure Virtual Desktop; workspace cannot sit on OneDrive/Google Drive/Dropbox Verified |
| Web application | — Could not read | No Verified |
| Pricing & commercial terms | ||
| Price published | Not published Verified | Published Verified |
| Pricing model | quote-only Verified | per-seat Verified |
| Free tier | Not offered Verified | free-trial Verified |
| Entry price | — Could not read | 700 CHF per year Verified |
| Currency | — Could not read | CHF Verified |
| Market fit & availability | ||
| C&I | No Verified | Yes Verified |
| Geographic availability | DE; global Verified | global Verified |
| Residential | No Verified | Yes Verified |
| Target buyer | enterprise-epc; engineering-firm Verified | engineering-firm; small-installer Verified |
Scroll the table sideways to see both products. The capability column stays in place.
Framed as requirements, not a verdict. Both descriptions come from the same data.
For utility-scale project developers, EPCs and engineering firms that already own a Civil 3D estate, have IT able to run and back up a SQL Server instance, and need a layout that survives into earthworks and pile-driving coordinates. Not for anyone who wants a browser tool, a price they can read, a trial they can self-serve, a rooftop or residential workflow, or a licence that survives losing a USB stick — the vendor's own help centre says losing the dongle "will result in the irrevocable loss of your license" and recommends buying electronics insurance.
Full HELIOS 3D profileFor engineers and IEs who need a yield number a bank will accept and are willing to work in a single-machine desktop tool. Not for anyone who needs macOS, a browser, a shared cloud workspace, a terminal-server deployment, or a sales proposal — the vendor explicitly excludes servers, Citrix, Remote Desktop, Azure Virtual Desktop, Windows Enterprise editions and cloud-synced folders, and sells no CRM or proposal module at all.
Full PVsyst profileMidsummer
Design & simulation · Web
SolarEdge Technologies
Design & simulation · Web
National Laboratory of the Rockies (NLR) — formerly the National Renewable Energy Laboratory (NREL)
Design & simulation · Desktop
They differ most on price published. In total we recorded 19 verified differences and 12 points where they are the same.
HELIOS 3D is priced quote-only and PVsyst is priced per-seat. These are different pricing models, so a single side-by-side figure would be misleading. Each is shown as its vendor states it.
We do not name a winner. Both are described from the same verified data, and which suits you depends on your requirements — the differences above are the facts; the choice is yours.
Last verified
Vendors change pricing and features without notice. Check the vendor’s own page before deciding.
This comparison is generated from the feature database, not written by hand. A pair is only published when the data holds at least five stateable differences — which is why 281 candidate pairs were refused. How comparisons are built