Size.Solar

    Calculated solar panel tilt angle in Doha

    We analysed solar production across a range of tilts (-5° to 55°) to find the optimal settings for your location. The more frequently you adjust your panels, the greater the potential energy gain.

    1. Best fixed tilt

    20°

    Set it once for the entire year. The simplest approach.

    Method: Polynomial regression on annual production data.

    2. Two adjustments / year

    Winter: 29°

    Summer: 14°

    Provides a -0.3% gain over the best fixed tilt.

    Method: Decoupled regression on 6-month seasonal data.

    3. Four adjustments / year
    Summer0°
    Autumn38°
    Winter55°
    Spring10°

    Offers a 3.8% gain over the best fixed tilt.

    Method: Decoupled regression on 3-month seasonal data.

    4. Twelve adjustments / year
    Jan55°
    Feb48°
    Mar25°
    Apr9°
    May0°
    Jun-3°
    Jul-1°
    Aug6°
    Sep19°
    Oct42°
    Nov55°
    Dec55°

    Achieves the maximum 4.6% gain over the best fixed tilt.

    Method: Decoupled regression on monthly data for ultimate optimization.

    *Tilt angles are relative to horizontal. For Doha, positive angles face South and negative angles face North. Gains are estimates based on modeling.

    Quote-ready tilt decision

    Give installers one fixed-angle target first

    Start the quote conversation with 20° South. Seasonal adjustment is only worth pricing if a supplier can show that roughly 3.8% extra production beats the cost, access risk, and warranty complexity of adjustable frames.

    Estimate productionStart roof design

    Base quote

    20° South

    Best default for normal roof-mounted systems and the first number to send to installers.

    Adjustable option

    Winter: 29° South

    Summer: 14° South

    Four seasonal changes model about 3.8% gain. Monthly adjustment models about 4.6%.

    Installer checks

    Roof pitch, available rail angles, wind loading, waterproofing, access for cleaning, and whether adjustment affects warranty.

    Direction check

    In Doha, the practical target is a south-facing array. Shade-free roof space, inverter sizing, and battery goals usually matter more than small angle differences.

    Annual production by strategy

    Monthly performance breakdown

    Ready to design your full system?

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