Chile contains the highest solar irradiance measured anywhere on the planet and one of the least forgiving operating environments to go with it. In the Atacama, altitude raises ultraviolet exposure and lowers air temperature while irradiance climbs past levels most module datasheets were characterised for, and dust does the rest. Meanwhile the regulatory path splits sharply between small distributed generation and the PMGD regime. Software choice follows both facts.
Direct answer. The best solar design software in Chile is PVsyst for the yield model, paired with PVCase for utility and PMGD-scale ground-mount layout or SurgePV for distributed commercial work. PVsyst is what the financing and PMGD processes expect, and it is the only common tool that handles high-altitude irradiance, spectral effects, and aggressive soiling with the granularity Chilean sites need.
TL;DR
- Atacama irradiance exceeds the range most default modelling assumptions were built for. Use site-specific data.
- Ley 21.118 netbilling covers distributed generation up to a defined capacity, with a declaration process through the SEC.
- PMGD is a separate regime for small distributed generators with its own connection and pricing arrangements.
- Soiling in the northern desert is severe and the cleaning strategy is a design input.
- Curtailment and price decoupling in the north are real commercial risks that belong in the yield analysis.
What Chile Actually Changes About Solar Design Software
The resource is extreme. Northern Chile records global horizontal and direct normal irradiance at the top of the world range. Combined with altitude, that produces high ultraviolet exposure, elevated module operating stress, and spectral conditions that differ from the temperate reference. Modules degrade differently, and generic assumptions about degradation and temperature coefficients carry more uncertainty than they do elsewhere. Site-specific meteorological data is not optional.
Two regulatory tracks. Ley 21.118 governs distributed generation for self-consumption up to a defined capacity, with netbilling compensation for surplus and a declaration process through the Superintendencia de Electricidad y Combustibles. Separately, the PMGD regime covers small distributed generators up to a larger threshold connecting to distribution networks, with its own connection procedure and price arrangements. The regime determines the documentation, the connection process, and the commercial model, and it has to be decided before design.
Soiling is a desert problem. In the north, rainfall is effectively zero and dust deposition is continuous. As in the Gulf, this makes the cleaning strategy a design input that determines row spacing and access, and it makes the soiling loss assumption the most consequential number in the yield model.
Curtailment is a commercial reality. Transmission constraints and price decoupling in the northern zones have produced periods where generation is curtailed or realises very low prices. For utility and PMGD projects, that risk belongs in the analysis rather than in a footnote.
Technical standards. Connection and operation follow the applicable technical norms, and the declaration and inspection process runs through the SEC. Installations must be declared, and the documentation set follows Chilean requirements rather than any platform’s template.
The Platforms Ranked for Chile
| Platform | Best for | High-irradiance and soiling modelling | Layout output | Bankable | Price per seat per year |
|---|---|---|---|---|---|
| PVsyst | Bankable yield, PMGD and utility | Best in class | No | Yes, the standard | ~$500 |
| PVCase | Utility and PMGD ground-mount layout | Via PVsyst handoff | Native CAD | No | Quote-based |
| SurgePV | Distributed commercial layout and SLD | Configurable, 8,760-hour | DXF and DWG | P50 and P90 | $1,299 to $1,899 |
| HelioScope | C&I rooftop layouts | Configurable | DXF only | No | ~$1,188 |
| SAM (NREL) | Technology and sensitivity studies | Configurable | No | Rarely alone | Free |
| AutoCAD | Final declaration drawings | Not applicable | Native | No | ~$2,030 |
| HOMER Pro | Mining and off-grid hybrids | Configurable | No | For hybrids | Licence-based |
PVsyst is the expected tool for anything financed or entering the PMGD process. See PVsyst price and PVsyst vs SAM for bankable yield.
PVCase handles terrain-aware ground-mount layout for Chile’s substantial utility and PMGD pipeline. See PVCase vs PVsyst for ground-mount.
SurgePV covers distributed commercial work, producing the layout, string design, single-line diagram, and editable DWG for the SEC declaration package.
HOMER Pro is relevant for Chile’s mining sector, where hybrid and off-grid configurations are common. See HOMER Pro vs PVsyst.
Try the software behind this guide
Distributed commercial layouts and SEC-ready drawings
SurgePV produces the 3D layout, 8,760-hour yield with configurable soiling, string sizing, single-line diagrams, and editable AutoCAD DWG export from one license.
Book a free SurgePV demo →No credit card. 20-minute walkthrough on one of your own projects.
What a Chilean Design Package Has to Contain
- Regime declaration stating whether the project falls under Ley 21.118 netbilling or the PMGD regime, since everything downstream depends on it.
- Layout with cleaning access provision where soiling requires it.
- Yield report naming the meteorological data source, the soiling loss, and the cleaning frequency assumed.
- Single-line diagram with protection and metering to the applicable technical norm.
- SEC declaration documentation for the installation.
- Structural calculations for wind and, in seismic zones, the seismic design of the mounting system and foundations.
- Curtailment and price risk analysis for utility and PMGD projects in constrained zones.
- Equipment documentation with the certifications required.
Item 6 is easy to underweight. Chile is highly seismic, and mounting and foundation design has to account for it alongside wind. That is structural engineering, not a solar design platform output.
Pricing in Chilean Pesos
| Stack | USD per year | Approx. CLP at 950 | Covers |
|---|---|---|---|
| PVsyst | ~$500 | ~475,000 | Yield modelling |
| HelioScope | ~$1,188 | ~1,128,600 | C&I layout and yield |
| SurgePV | $1,299 to $1,899 | ~1,234,050 to 1,804,050 | Layout, SLD, DWG, proposal |
| PVsyst plus SurgePV | ~$1,799 to $2,399 | ~1,709,050 to 2,279,050 | Bankable yield plus drawings |
Exchange rate is illustrative and the Chilean peso moves, so confirm before budgeting.
What Most Chilean Developers Get Wrong
They use generic meteorological data for extraordinary sites.
A satellite-derived dataset with a generic bias correction is adequate for a temperate rooftop. In the Atacama, where irradiance sits at the edge of the global range and altitude alters the spectrum, that approach carries more uncertainty than the project’s financial margin. For anything financed, site-specific measurement or a properly validated high-resolution dataset is the difference between a bankable number and an argument with the independent engineer.
The second mistake is designing before choosing the regime. Ley 21.118 netbilling and PMGD imply different connection processes, different commercial models, and different documentation. Establishing which applies is the first design decision, not a later approval step.
When Software Is Not the Answer
Chilean utility and PMGD projects are engineering exercises: terrain-aware layout, seismic and wind structural design, foundation design against local geotechnical conditions, and owner’s engineer support.
Our solar ground mount design, site survey and land feasibility, STAAD Pro report calculations, and MW-scale project management consultancy services cover that work. See our projects or talk to our team.
Conclusion
- Use site-specific meteorological data. Generic datasets carry too much uncertainty at Atacama irradiance levels.
- Choose the regime before designing. Ley 21.118 and PMGD imply different processes and commercial models.
- Design the cleaning access and the seismic case together. Both are structural decisions made at layout stage.
In this country series: solar software in Chile, best solar proposal software in Chile, shading analysis software in Chile, Pvsyst review. Tool deep dives: Helioscope review, Aurora Solar review.
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Disclosure and accuracy note
Commercial relationship. Heaven Designs and SurgePV are part of the same group. Treat our recommendation of SurgePV as a vendor making its own case, not an independent verdict. We have tried to describe every other product fairly, and to say plainly where a competitor is the better choice.
Pricing. All prices are indicative, compiled from public sources when this page was written. They vary by tier, region, contract term and exchange rate, and change without notice. Several vendors quote rather than publish, and some price in currencies other than the US dollar, so a converted figure moves with the exchange rate. Confirm current pricing with the vendor before you decide anything.
Trademarks and corrections. All product names and trademarks belong to their respective owners, and are used here for identification and comparison only. Their use does not imply affiliation with or endorsement by those companies. If anything here is out of date or wrong, tell us and we will correct it.
FAQ
What is the best solar design software in Chile? PVsyst for the yield model, paired with PVCase for utility and PMGD-scale ground-mount layout or SurgePV for distributed commercial work.
What is Ley 21.118? The law governing distributed generation for self-consumption in Chile, with netbilling compensation for surplus and a declaration process through the SEC. It applies up to a defined capacity.
What is PMGD? A separate regime for small distributed generators connecting to distribution networks, with its own connection procedure and pricing arrangements. It applies at a larger threshold than the netbilling regime.
Why does Atacama irradiance complicate modelling? Because irradiance and ultraviolet exposure sit at the top of the global range and altitude alters the spectrum. Generic assumptions about temperature coefficients and degradation carry more uncertainty than in temperate markets.
How should soiling be handled in a Chilean yield model? As an explicit loss tied to a stated cleaning frequency, with cleaning access designed into the layout. Northern Chile receives effectively no rainfall, so natural cleaning cannot be assumed.
How much does solar design software cost in Chile? From roughly 475,000 pesos per year for PVsyst alone to around 2,280,000 for a bankable yield plus drawings stack. Full math is in our solar design software pricing breakdown.
What about proposal software specifically? Covered in best solar proposal software in Chile.
What about shading analysis specifically? Shading is a separate tool decision at Chile’s latitude and approval regime. Covered in best solar shading analysis software in Chile.
