Philippine commercial solar sells itself on arithmetic that barely needs help. Grid tariffs are high, irradiance is good, and a factory or mall running on daytime load can see a payback that makes the decision straightforward. The difficulty is elsewhere: proving the array will survive a typhoon, and being honest about how little of the system can be exported under the net metering cap.
Direct answer. The best solar proposal software in the Philippines for most EPCs is SurgePV or a model built on PVsyst output, because the commercial case rests on hourly self-consumption against a high tariff rather than on export revenue. Residential-oriented platforms have limited relevance in a market where commercial and industrial rooftops carry the volume.
TL;DR
- High grid tariffs make self-consumption extremely valuable. That, not export, is the case.
- Net metering is capped at a capacity small relative to a commercial roof, so most C&I systems are designed to avoid export.
- Typhoon resilience belongs in the proposal. Customers ask, and the answer is a structural calculation.
- Philippine electricity bills contain multiple components. Model only the ones the system displaces.
- Distribution utility interconnection has its own timeline and belongs in the customer's expectations.
What the Philippines Actually Changes About Proposal Software
Self-consumption is worth a lot. Philippine commercial electricity tariffs are high by regional standards, which means every kilowatt-hour a factory or a mall consumes from its own array is worth a great deal. The proposal turns on the self-consumption share against the customer’s actual load profile, and for a daytime-operating business that share can be very high.
Export is capped and secondary. The Energy Regulatory Commission’s net metering programme applies up to a defined capacity that is small relative to a commercial rooftop. For a large C&I system, export is either not permitted at scale or handled through other arrangements. A proposal that models substantial export revenue for a large rooftop is describing something that will not be approved.
Typhoon resilience is a sales question. A Philippine customer evaluating a rooftop array will ask what happens in a typhoon, and the credible answer references the design wind speed for their zone under the National Structural Code and the structural calculation performed for their specific roof. A proposal that dodges this is weaker than one that addresses it directly, and the customers who ask are usually the serious ones.
Bills have several components. Philippine electricity bills separate generation, transmission, distribution, and various pass-through charges. Solar displaces some components fully and others not at all. A savings model applied to the total bill overstates the benefit.
Interconnection has a timeline. Application to the distribution utility, and where applicable through the net metering programme, takes time that belongs in the customer’s expectations rather than in a footnote.
The Platforms Ranked for the Philippines
| Platform | Best for | Hourly self-consumption | Multi-component tariff | Design output | Price per seat per year |
|---|---|---|---|---|---|
| SurgePV | C&I proposals plus design | Yes, 8,760-hour | Configurable | Full, with DWG | $1,299 to $1,899 |
| PVsyst plus spreadsheet | Bankable C&I and utility cases | Yes | Manual | Yield only | ~$500 plus time |
| HelioScope | Fast C&I layout and yield | Yes | No | Layout only | ~$1,188 |
| HOMER Pro | Island and hybrid systems | Yes | Manual | No | Licence-based |
| Aurora Solar | Larger commercial-facing teams | Yes | Configurable | Good | $1,908 to $3,108 |
| OpenSolar | Small residential volume | Yes | Configurable | Basic | $0 plus transaction fees |
| Excel over hourly output | Bespoke commercial structures | Manual | Fully manual | None | Time |
SurgePV fits the Philippine C&I case: hourly generation against load, string design, single-line diagram, and the customer document from one model. Technical detail in best solar design software in the Philippines.
PVsyst with a spreadsheet model remains how bankable Philippine commercial and utility cases get built. See PVsyst price.
HOMER Pro matters for the island and off-grid segment, which is a real part of the Philippine market. See HOMER Pro vs PVsyst.
Try the software behind this guide
Prove the self-consumption case on the factory load curve
SurgePV models 8,760 hours of generation against the customer load, sizes the system to avoid export, and produces the single-line diagram plus a white-label proposal.
Book a free SurgePV demo →No credit card. 20-minute walkthrough on one of your own projects.
What a Philippine Proposal Has to Contain
- System specification with array capacity, inverter selection, and mounting type.
- Generation estimate with the data source named.
- Self-consumption share modelled hourly against the customer’s actual load profile.
- Export position stating whether the system exports, whether it qualifies under the net metering cap, and how export is limited if not.
- Tariff analysis by bill component, showing which charges the system displaces and which it does not.
- Typhoon resilience referencing the site’s NSCP wind zone and confirming a structural calculation is included.
- Interconnection timeline for the distribution utility application.
- Permitting position including PEE-signed plans.
- Assumptions for tariff escalation and degradation.
Item 6 is a sales advantage, not a disclaimer. Competitors avoid the subject. A proposal that names the design wind speed and confirms a structural calculation for that specific roof reads as serious engineering.
Pricing in Philippine Pesos
| Stack | USD per year | Approx. PHP at 58 | Covers |
|---|---|---|---|
| OpenSolar | $0 plus fees | Transaction-linked | Small residential proposal |
| PVsyst | ~$500 | ~P29,000 | Yield, no proposal |
| HelioScope | ~$1,188 | ~P68,904 | Layout and yield |
| SurgePV | $1,299 to $1,899 | ~P75,342 to P110,142 | Proposal plus design and SLD |
| Aurora | $1,908 to $3,108 | ~P110,664 to P180,264 | Proposal plus design |
Exchange rate is illustrative.
What Most Philippine Installers Get Wrong
They apply the solar offset to the whole bill.
A Philippine commercial electricity bill has several components, and a solar system displaces some of them fully, some partially, and some not at all. Modelling the saving as a percentage of the total bill overstates it, and a customer with a finance function will find the error. Breaking the bill into components and showing which ones the system reduces produces a smaller number that survives scrutiny, and it demonstrates a level of care that wins commercial work.
The second mistake is treating typhoon exposure as a topic to avoid. Customers in high wind zones are aware of the risk, and an installer who raises it first, with a calculation, is in a stronger position than one who waits to be asked.
When Proposal Software Is Not the Constraint
Philippine commercial projects need engineering that no proposal tool provides: wind-load calculations for the specific site, mounting design, roof capacity assessment, and full construction documentation.
Our solar civil and structural engineering team produces wind-load and mounting designs delivered as STAAD Pro report calculations, with solar rooftop detailed engineering design for the construction pack. See the sample design pack or talk to our team.
Conclusion
- Model the bill by component. Solar does not displace every charge, and a percentage-of-bill saving overstates the case.
- State the export position honestly. The net metering cap is small relative to a commercial roof.
- Raise typhoon resilience first. It converts better than avoiding it, and it requires a real calculation.
In this country series: solar software in the Philippines, best solar design 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 proposal software in the Philippines? SurgePV for C&I work where the proposal also carries the design, or a model built on PVsyst output for bankable commercial and utility cases. The case rests on hourly self-consumption, not export.
How does the net metering cap affect the proposal? The ERC programme applies up to a capacity limit small relative to a commercial rooftop, so most C&I systems are designed to avoid export. A proposal showing large export revenue is describing an unapprovable system.
Why is self-consumption so valuable in the Philippines? Because commercial grid tariffs are high by regional standards, so each kilowatt-hour supplied by the array displaces an expensive one. A daytime-operating business can achieve a very high self-consumption share.
Should typhoon resilience be in the proposal? Yes. Reference the site’s wind zone under the National Structural Code and confirm a structural calculation for that specific roof. Customers ask, and addressing it first is a competitive advantage.
How should Philippine electricity bills be modelled? By component. Generation, transmission, distribution, and pass-through charges are affected differently, and applying the offset to the total bill overstates the saving.
How much does solar proposal software cost in the Philippines? From P0 with OpenSolar’s transaction model to roughly P180,000 per user per year at Aurora’s higher tiers. Cross-platform math is in our solar design software pricing breakdown.
What about the design software decision separately? Covered in best solar design software in the Philippines.
