Plan your off-grid solar system with confidence
Free calculator for Filipino DIY builders. Pick your appliances, size your system, and browse real solar products with Philippine prices.
Everything you need to go solar
From sizing your system to picking parts — all in one place, all free.
Electric Bill Analyzer
Upload a photo of your electric bill. AI reads your usage and builds a personalized solar system for you in seconds. Requires Google sign-in.
DIY Solar Builder
Pick what to power — ref, fan, lights — and build your system with live compatibility checks.
Appliance Wattage Database
70+ Filipino household appliances with wattages for solar sizing.
Wire Sizing Charts
PV wire, battery cables, and AC wiring for 12V, 24V, and 48V systems.
How it works
List your appliances
Select what you want to power and how many hours per day.
Get your system size
See how many watts of panels, amp-hours of batteries, and what inverter you need.
Pick your parts
Browse real products with Philippine prices, check compatibility, and see total cost.
Ready to plan your solar setup?
It takes 5 minutes. No sign-up required.