The Philippines has some of the highest electricity prices in Southeast Asia and some of the strongest typhoons on earth. That combination makes the commercial solar case excellent and the structural design non-negotiable. A Philippine solar array is a wind-loaded structure first and a generator second, and design software that treats mounting as a detail rather than an engineering problem is dangerous here in a way it is not in most markets.
Direct answer. The best solar design software in the Philippines for most EPCs is PVsyst or SurgePV for the electrical and yield side, paired with a structural tool such as STAAD Pro for the mounting design, because NSCP wind loading governs. The Philippine Electrical Code 2017 governs the installation and plans generally require the signature of a Registered Professional Electrical Engineer, which no platform provides.
TL;DR
- Typhoon wind loading under the National Structural Code of the Philippines governs the mounting design. No solar platform computes it.
- The Philippine Electrical Code 2017 is the electrical framework, not the NEC, despite the family resemblance.
- Plans generally require signing by a Registered Professional Electrical Engineer.
- Net metering through the ERC is capped, which pushes larger commercial systems toward self-consumption designs.
- High grid tariffs make the commercial case strong, so C&I is where the volume and margin sit.
What the Philippines Actually Changes About Solar Design Software
Wind governs the structure. The National Structural Code of the Philippines defines basic wind speeds by zone, and the highest zones face design wind speeds far beyond anything a temperate-market mounting system is specified for. Uplift on a tilted array is the critical case, and it drives attachment spacing, rail selection, ballast, and roof capacity. This is a structural calculation performed outside every solar design platform, and skipping it is how arrays leave roofs during a typhoon.
The electrical code is Philippine. The Philippine Electrical Code derives from the same tradition as the NEC but is its own document with its own provisions and edition cycle. Drawings generated from a US NEC template carry the wrong references.
A PEE signs the plans. Electrical plans for permitting generally require the signature and seal of a Registered Professional Electrical Engineer. Design software feeds that submission but does not replace it.
Net metering is capped. The Energy Regulatory Commission’s net metering programme applies up to a defined capacity limit, which is small relative to a typical commercial rooftop. Larger installations therefore tend to be designed for self-consumption, with export either limited or handled through other arrangements. That makes hourly load matching the central design exercise for C&I.
Tariffs make the case. Philippine electricity prices are high by regional standards, which means the value of displaced energy is substantial and commercial payback periods are attractive. The market’s constraint is engineering capacity, not customer economics.
The Platforms Ranked for the Philippines
| Platform | Best for | Hourly self-consumption | Wind and structural | Editable CAD output | Price per seat per year |
|---|---|---|---|---|---|
| PVsyst | Bankable yield and C&I modelling | Yes | No | No | ~$500 |
| SurgePV | Layout, SLD, and drawings | Yes, 8,760-hour | No | DXF and DWG | $1,299 to $1,899 |
| STAAD Pro | Mounting structural design | Not applicable | Yes, NSCP loads | Structural | Licence-based |
| HelioScope | Fast C&I rooftop layouts | Yes | No | DXF only | ~$1,188 |
| AutoCAD | Final plans for PEE signature | Not applicable | Manual | Native | ~$2,030 |
| PVCase | Utility-scale ground-mount layout | Via PVsyst | No | Native CAD | Quote-based |
| HOMER Pro | Hybrid and island systems | Yes | No | No | Licence-based |
PVsyst is the yield reference for Philippine commercial and utility work and what lenders accept. See PVsyst price.
SurgePV produces the layout, string design, single-line diagram, and editable DWG that becomes the PEE-signed plan set.
STAAD Pro is where the mounting design actually happens, against NSCP wind loads. See our STAAD Pro report calculations service for what that deliverable looks like.
HOMER Pro matters for the Philippines’ island and off-grid segment, which is substantial. See HOMER Pro vs PVsyst.
Try the software behind this guide
Layouts and single-line diagrams ready for PEE signature
SurgePV produces the 3D layout, 8,760-hour yield and self-consumption modelling, string design, single-line diagrams, and editable AutoCAD DWG export.
Book a free SurgePV demo →No credit card. 20-minute walkthrough on one of your own projects.
What a Philippine Design Package Has to Contain
- Array layout with module positions, tilt, and attachment spacing.
- Structural calculation for wind uplift under the applicable NSCP wind zone, covering the mounting system and the supporting roof structure.
- Single-line diagram to Philippine Electrical Code 2017, with protection, disconnection, and grounding.
- Load and self-consumption analysis where the system is designed to limit or avoid export.
- PEE-signed plans for the permitting submission.
- Distribution utility application to the relevant utility for interconnection.
- Net metering application through the ERC programme where the capacity qualifies.
- Equipment documentation with certifications.
Item 2 is the one that matters most. In the highest wind zones, an array specified to a generic international mounting standard is under-designed, and the failure mode is catastrophic rather than gradual.
Pricing in Philippine Pesos
| Stack | USD per year | Approx. PHP at 58 | Covers |
|---|---|---|---|
| PVsyst | ~$500 | ~P29,000 | Yield modelling |
| HelioScope | ~$1,188 | ~P68,904 | C&I layout and yield |
| SurgePV | $1,299 to $1,899 | ~P75,342 to P110,142 | Layout, SLD, DWG, proposal |
| PVsyst plus SurgePV | ~$1,799 to $2,399 | ~P104,342 to P139,142 | Bankable yield plus drawings |
Exchange rate is illustrative. Note that STAAD Pro or an equivalent structural licence sits on top of all of these.
What Most Philippine Installers Get Wrong
They specify mounting from a supplier catalogue without a wind calculation.
Mounting systems sold into the region are frequently specified against generic wind ratings that do not correspond to the design wind speed at a specific Philippine site. An installer who accepts the catalogue rating and does not run the calculation is transferring an engineering judgement to a supplier who has never seen the site. In the highest wind zones this is the difference between an array that survives a typhoon season and one that does not.
The second mistake is designing for export the net metering cap will not allow. For a commercial rooftop, the qualifying capacity is small relative to the roof, so a design that assumes export revenue on a large system is modelling something that will not be approved.
When Software Is Not the Answer
The structural side of Philippine solar is engineering work, and so is the detailed design of anything at commercial scale.
Our solar civil and structural engineering team produces wind-load calculations and mounting designs, delivered as STAAD Pro report calculations, with solar rooftop detailed engineering design and solar ground mount design covering the full construction pack. See the sample design pack or talk to our team.
Conclusion
- Run the NSCP wind calculation for every site. Catalogue mounting ratings are not a substitute in a typhoon country.
- Design C&I for self-consumption. The net metering cap is small relative to a commercial roof, so export cannot carry the case.
- Plan the PEE signature into the schedule. Plans need it and software does not provide it.
In this country series: solar software in the Philippines, best solar proposal software in the Philippines, shading analysis software in the Philippines, 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 the Philippines? PVsyst or SurgePV for the electrical and yield side, paired with a structural tool such as STAAD Pro for the mounting design against NSCP wind loads.
Does solar design software calculate typhoon wind loads? No. Wind loading under the National Structural Code of the Philippines is a structural calculation performed outside every solar design platform, and in high wind zones it governs the entire mounting design.
Which electrical code applies in the Philippines? The Philippine Electrical Code 2017. It shares a tradition with the NEC but is a separate document, so drawings from a US template carry the wrong references.
Do plans need a Professional Electrical Engineer? Electrical plans for permitting generally require the signature and seal of a Registered Professional Electrical Engineer. Software feeds that submission but does not replace it.
How does the net metering cap affect design? The ERC programme applies up to a defined capacity limit that is small relative to a typical commercial roof, so larger C&I systems are usually designed for self-consumption rather than export.
How much does solar design software cost in the Philippines? From roughly P29,000 per year for PVsyst alone to around P139,000 for a bankable yield plus drawings stack, before a structural licence. Full math is in our solar design software pricing breakdown.
What about proposal software specifically? Covered in best solar proposal software in the Philippines.
What about shading analysis specifically? Shading is a separate tool decision at the Philippines’s latitude and approval regime. Covered in best solar shading analysis software in the Philippines.
