Solar planning hub

Move from electricity use to system size, roof fit, battery capacity, payback, quote comparison, and installer research.

What you get

Working mobile-friendly formulas

Planning ranges and visible assumptions

Reviewer, source, and updated date

Save, share, print, and compare shells

Use the calculators as a connected decision path instead of isolated estimates.

Launch calculators appear first. Supporting tools remain usable but are excluded from search until their evidence and content meet the same standard.

Estimate system size, installation range, savings, and payback for a Philippine property.

Estimate recommended kW, panel count, generation, roof area, and cost.

Compare cash and financing-adjusted solar payback.

Estimate usable and nominal battery capacity, inverter size, runtime, and budget.

Check how many panels fit and whether the roof is large enough.