Solar PV Capacity Calculator

Estimate your solar PV system size before requesting a site assessment.

Use your latest electric bill to estimate monthly consumption, recommended PV capacity in kWdc, module count, and expected generation.

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Input details

Recent Electric Bill (PHP)

Enter an electric bill amount greater than zero.

Project Type

Phase

Preferred System

Hybrid System Solar panels with battery storage. Includes a 15% sizing allowance for hybrid design considerations. Grid-tied System Solar panels connected to the utility grid. Usually simpler and more economical, but normally has no backup during outages.

Final PV Capacity

0.00kWdc

Calculated from kWac demand, converted to kWdc, then rounded up by module count.

PV Modules Needed

0modules

Module basis: 640Wp per PV module.

Estimated monthly energy use 0 kWh

Initial computed capacity 0.00 kWac

Required DC capacity 0.00 kWdc

Estimated monthly solar production 0 kWh

Calculation basis

This estimate uses the recent bill, PHP 15.00/kWh electricity rate, 4 peak sun hours, 80% performance ratio, and 640Wp PV modules.

Disclaimer

This calculator provides a preliminary estimate only. As your Electrical Engineer, I would treat this result as an initial planning value, not the final design capacity. Final system sizing must be confirmed through site inspection, available roof space, shading condition, roof orientation, actual load profile, utility requirements, structural capability of the roof, approved system design, and the available inverter sizes for both single-phase and three-phase systems. The computation may also be revised based on the verified electricity rate and seasonal solar resource at the project location.