Where could sunlight support more compute?

Two sources, every site

We size against two satellite records, not one.

At our three validation points, NASA POWER and PVGIS SARAH2 differ by 7 to 20 percent in annual sunlight. Every Combine sizing is tested against both, so a sunny estimate never decides a design on its own.

NASA POWERPVGIS SARAH2

Douala

+17%

Accra

+20%

Addis Ababa

−7%

Bars scaled to 7 kWh/m²/day.

Data and Method

Ground figures are global horizontal irradiation, the solar energy arriving on a horizontal surface, in kWh/m²/day, from NASA POWER's ALLSKY_SFC_SW_DWN climatology (2001 to 2020 monthly and annual means, satellite-derived SYN1DEG data, about 1° grid). The darkest month is the lowest of the twelve monthly means. The validation comparison uses PVGIS v5.2 typical meteorological years (SARAH2). Retrieved 16 September and 2 November 2026.

Sources: NASA POWER, PVGIS, Natural Earth. Map drawn with D3 and world-atlas.