Common Solar Mistakes
Top 10 Solar Mistakes in the Philippines
Learn from others' expensive errors — the most common solar mistakes and how to avoid them.
8 min read
Simple and practical
Beginner level
No solar background needed
PH context
Made for local homes
What you will understand
Visual Learning Map
Lesson Guide
Top Mistakes to Avoid
- Oversizing without net metering — Extra panels won't save more if you can't export
- Wrong system type — Grid-tied in brownout-prone areas
- Cheap unbranded equipment — Fails in PH heat and humidity
- No site survey — Shading discovered after install
- DIY grid-tie wiring — Dangerous and illegal without licensed electrician
- Undersized cables — Voltage drop and fire risk
- No maintenance plan — Dirty panels lose 15% output
- Mixing battery brands — Causes imbalance and early failure
- Ignoring inverter placement — Heat kills inverters in direct sun
- No monitoring — Problems go unnoticed for months
The Golden Rule
Get 3 quotes from licensed installers. Compare equipment brands, warranties, and after-sales support — not just price.
Frequently Asked Questions
What is the #1 mistake?
Choosing grid-tied without understanding you get zero power during brownouts. Hybrid is usually better in PH.
Is DIY solar safe?
Off-grid DIY can work for enthusiasts. Grid-tie MUST use licensed electricians per Philippine electrical code.
How do I verify an installer?
Check licenses, past projects, brand certifications, and warranty terms. Ask for references.
Should I buy equipment online myself?
Only if your installer agrees to install and honor warranties. Otherwise, let installer source equipment.
What warranty should I expect?
Panels: 25 years. Inverter: 5–10 years. Battery: 5–10 years. Installation: 1–2 years workmanship.
Common Mistakes to Avoid
This IS the mistakes module!
Review all 10 mistakes above. Share this module with family before signing any contract.
Skipping the contract review
Read warranty terms, maintenance clauses, and what happens if output underperforms.
Not planning for inverter replacement
Budget ₱30,000–80,000 for inverter replacement around year 10–12.