Natural vs artificial light balance

What are you trying to achieve?

Window Orientation
Time of Day
2:00 PM
Window Coverage
Glazing / Shading
Room Reflectance
Room Type
Daylight
Artificial need
Glare risk
Balance score
    💡 Recommended Lighting Strategy
    Color Temperature Balancing
    Warmer ← 2700K3000K4000K5000K → Cooler

    Daylight Harvesting

    🔆 Dimming Integration

    Install dimmable fixtures on daylight zones. Set occupancy + photosensor dimming to reduce artificial output when windows provide adequate lux. Saves 30–60% energy in well-glazed rooms.

    🎛 Layered Scenes

    Program “morning,” “working,” and “evening” scenes. Morning = cool bright, working = tunable task, evening = warm ambient. Automate via smart home or timer relay.

    🌡 Tunable White

    Use CCT-adjustable fixtures near windows to track natural daylight — cool during peak sun, transitioning warmer toward dusk. Reduces the jarring contrast between window and ceiling light.

    🪟 Perimeter vs Core

    Perimeter zones get daylight first — dim those circuits independently. Core zones (room center, far from windows) need full artificial support regardless of outdoor conditions.

    ⚡ Energy Impact

    A south-facing living room with clear glass can meet 500 lux task requirements from 9am–4pm with zero artificial light. That’s 7+ hours of electricity savings per clear day.

    🔭 Sensor Types

    Photosensors measure ambient lux and dim proportionally. Occupancy sensors cut power when rooms are empty. Combined PIR + daylight sensors are the most efficient pairing for residential use.

    Scroll to Top

    The calculators and tools on LightingCalc.lighting are provided for general guidance and informational purposes only. Results are estimates based on standard formulas and the values you enter — they do not constitute professional engineering, electrical, or architectural advice. Always verify calculations with a qualified professional before making decisions for any safety-critical, code-compliance, or commercial application. LightingCalc.lighting makes no representations or warranties as to the accuracy or completeness of any result, and accepts no liability for errors, omissions, or any outcomes arising from reliance on this information.