Alternative
HelioScope alternative for installers: Solispec
HelioScope and Solispec both run in the browser, but for different customers: HelioScope for commercial plants where a lender has to accept the yield; Solispec for the installer who needs a frame to the local norms, an estimate and a proposal for a household or a business.
In the browser, nothing to install, no card: the Start plan is free.
Ground frame designer
Design the ground frame for your solar plant
Solispec picks the profiles and posts, checks the frame against snow and wind to the DBN and prices it down to the last bolt.
Who HelioScope is for
On its site HelioScope calls itself the trusted standard for commercial solar-plus-storage design and sales: automatic layout, sub-minute simulations, production estimates that lenders accept, accuracy validated by DNV, NREL and CEC; shade reports, single-line diagrams, sales proposals; Basic, Pro and Enterprise plans with a free trial. You need it when the project is commercial and financed.
Who Solispec is for
You need Solispec when the plant has to be designed to the country’s norms and sold: a frame and fixings with the snow and wind checks by address, strings per MPPT, an estimate at your prices, a proposal by link the client accepts from a phone. A free plan and five languages, Ukrainian and Polish among them.
HelioScope and Solispec: the differences
| Solispec | HelioScope | |
|---|---|---|
| Frame and mounting to local norms | YesДБН В.1.2-2, ДБН В.2.6-198, EN 1993-1-3 | Not stated on the vendor’s site |
| Snow and wind by address | Yes | Not stated on the vendor’s site |
| Yield simulation | PartlyPVGIS yield by month and an hourly balance; no hourly simulation from module models | Yes |
| Estimate with a bill of materials | Yes | Partlyfinancial modelling on the Pro plan; a bill of materials is not stated |
| Client view and acceptance | Yes | Not stated on the vendor’s site |
| In the browser, no install | Yes | Yes |
| Free plan | Free | Triala free trial on the vendor’s site |
| Languages: uk, pl, de, es | Ukrainian, English, Polish, German, Spanish | Not stated on the vendor’s site |
| Pricing model | Start is free; Pro and Business monthly, prices on the pricing page | Basic and Pro plans per licence, Enterprise custom; prices on the vendor’s site |
Checked October 28, 2026
What carries over from HelioScope
- 01
Equipment models: panels, inverters and batteries from the Solispec catalogue, by the name in your project.
- 02
Yield: Solispec takes it from PVGIS for the same address, tilt and azimuth.
- 03
Your prices: a price list from Excel into «My prices» — the estimate and the proposal use them.
HelioScope project files are not imported: the inputs carry over, not the calculation.
Questions and answers
How does Solispec differ from HelioScope?
HelioScope estimates yield to a lender’s standard and makes proposals for commercial projects. Solispec designs the frame and fixings to the DBN, an estimate with a bill of materials and a proposal for any customer; the yield comes from PVGIS without a bank validation.
Does Solispec have a free plan?
Yes, Start is free with no time limit. HelioScope, by its site, has a free trial and the paid Basic, Pro and Enterprise plans.
Does Solispec make single-line diagrams?
Solispec shows the equipment, strings per MPPT input with voltages and currents, the cables and protection in the designer and in the PDF. A single-line diagram as a drawing of its own is not generated yet.
Does Solispec design the frame?
Yes: a ground truss, a flat roof on ballast and a pitched roof with fixings, with the snow and wind checks to the DBN and the drawings. The HelioScope site does not state a frame calculation.
Does Solispec suit commercial plants?
For plants up to 20 systems on a site, yes: roof, ground and flat roof in one project, the estimate and the proposal. For financed projects a simulation report is usually asked from HelioScope or PVsyst.
Which languages does Solispec work in?
Ukrainian, English, Polish, German and Spanish: the interface, reports and proposals. HelioScope’s languages are not stated on its site.
Sources
About the competitors only what their public pages state (October 28, 2026); what they do not state is marked «not stated». No competitor prices: they change, see the vendor’s site.