IFAS DIGITAL · SOLAR PRO

A first assessment of your energy project.

Explore system sizing and generation scenarios. Add a simple financial assessment using your own cost and tariff assumptions.

Start with your requirements.

Enter the electricity consumption shown on your bill and the usable roof area.

Consumption period Electricity consumption (kWh) Province Usable roof area (m²) Roof orientation Roof tilt Roof type Shading Additional system loss (%) Target self-consumption (%) Province-based starting yield (kWh/kWp) Assumed layout area (m²/kWp)

Province values are editable software starting assumptions, not live irradiation data. Orientation, tilt, shading, additional losses and actual roof geometry require engineering verification.

Add a financial scenario (optional)

Use the same currency for all financial inputs. The tool does not provide current prices or tariffs.

Total investment cost Avoided electricity cost / kWh Share of generation consumed on site (%) Annual operating cost

PRELIMINARY ASSESSMENT

Connect assumptions with outcomes.

Enter your details and select Calculate potential.

Annual energy balance is not instantaneous self-consumption. Night-time loads, grid conditions and storage need separate assessment. The financial scenario uses a fixed tariff and excludes export revenue, financing, tax, inflation, degradation and equipment replacement. It is not a final design or a guarantee of output or returns.

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How to interpret the result

System size is the smaller of the theoretical capacity needed for annual consumption and the capacity permitted by the roof-area assumption. Generation uses your selected specific yield. The tool does not retrieve live irradiation data.

Simple payback divides investment cost by annual net savings. Self-consumption and financial inputs are your assumptions; validate them against interval consumption and generation data before making a decision.