GCC Reference Data

Solar Irradiance Map for GCC Cities

Annual and monthly solar irradiance (GHI) for 19 cities across the Gulf — sourced live from NASA POWER climatology.

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Global Horizontal Irradiance (GHI) is the total solar energy hitting a flat horizontal surface, averaged over a full day. It's the headline number for sizing rooftop solar — a higher GHI means more kWh per kWp installed.

The Gulf is one of the sunniest regions on Earth, averaging 5.0–6.5 kWh/m²/day vs the global average of 4.0. Click any marker to see the city's full month-by-month profile.

Irradiance map

Marker color and size show annual GHI. Click any city for monthly chart, optimal tilt, and average temperature.

GHI (kWh/m²/day)

Key Insights

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    Related reference data

    Data GCC Electricity Rates → Data Solar Incentives & Net Metering → Tool Solar Savings Calculator →
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    Source: NASA POWER. All values come from NASA POWER multi-decadal climatology — a satellite-derived long-term average. Real-year output will vary by ±5–10% with weather and dust. Data is fetched on first load and cached locally for 24 hours.