Easy PV
Midsummer
Design & simulation · Web
Comparison
20 differences · 10 identical
The differences that matter most
They differ most on price published. HELIOS 3D publishes Not publicly disclosed; PlantPredict publishes Could not verify. They use different pricing models, so those figures do not compare directly.
We do not name a winner. Below are 20 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 PlantPredict is priced on an unrecorded basis. 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
PlantPredict
Could not verify
Model not established
Prices are shown exactly as each vendor writes them and are never converted between currencies.
20 differences, ordered by how much they are likely to matter — pricing transparency first, then capabilities the vendor explicitly confirms or denies.
| Capability | HELIOS 3D | PlantPredict |
|---|---|---|
| Solar design & simulation | ||
| Bankable / IE-accepted simulation report | — Not found | Advanced Verified |
| Battery sizing and modelling | — Not found | Advanced Verified |
| Loss and uncertainty modelling (P50/P90) | — 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 |
| Inverter sizing | Advanced Verified | — Could not read |
| Named weather / irradiance data source | advanced Verified | basic Vendor claim |
| String sizing / stringing | — Could not read | Advanced Verified |
| Proposals & sales | ||
| E-signature | — Not found | — Could not read |
| Estimation & financial modelling | ||
| ROI / payback calculation | — Not found | Advanced Verified |
| AI & automation | ||
| AI agent / copilot | — Could not read | Not offered Verified |
| Integrations & extensibility | ||
| Public API | — Not found | Advanced Verified |
| MCP server | — Could not read | — Verified |
| Named, documented integrations | 1 Verified | — Could not read |
| Pricing & commercial terms | ||
| Price published | Not published Verified | — Could not read |
| Pricing model | quote-only Verified | — Could not read |
| Free tier | Not offered Verified | — Could not read |
| Market fit & availability | ||
| Geographic availability | DE; global Verified | US; global Verified |
| Target buyer | enterprise-epc; engineering-firm Verified | — Could not read |
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 utility-scale energy modellers and IEs who want a browser tool with unlimited projects, a documented algorithm set their lender's IE can audit, and automation. **Not for residential or C&I rooftop sales work, not for** teams that need layout-to-construction CAD (Design Pro is GIS-based, not an AutoCAD product), and not for anyone taking the site's structured data at face value — its schema publishes a price that its own pricing page contradicts.
Full PlantPredict 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 20 verified differences and 10 points where they are the same.
HELIOS 3D is priced quote-only and PlantPredict is priced on an unrecorded basis. 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