Hours of Sunlight/Sunshine/Cloudiness
Sureguard's solar powered energizers will operate successfully over the whole of Australia provided the setup instructions have been followed correctly. For our International customers we have provided this Animated Sunshine Map to determine whether your location receives sufficient sunlight.Map areas coloured in shades of blue receive less than three hours of bright sunlight per day on average during that month while accounting for cloudiness. This is insufficient power for running our solar products 24 hours a day. During these times you can maintain operation by:
1/ Setting the energizer's timer to operate for a lesser period, say 8 hours per day.
2/ Remove and recharge the energizer's internal rechargeable battery.
All coloured areas, other than blue, receive sufficient sunlight for proper operation even in cloudy conditions.
KEY: The top right hand side displays the month as SUN01 to SUN12 meaning January to December. The sunshine fraction (%) relates to the average number of hours of sunlight. For example, 31% to 40% represents 3 to 4 hours / day of bright sunlight.
The sunshine data in this 0.5 degree gridded
data set are basically those published by R. Leemans and W. Cramer in 1991
(The IIASA database for mean monthly values of temperature, precipitation
and cloudiness on a global terrestrial grid. Research Report RR-91-18.
International Institute of Applied Systems Analyses, Laxenburg, pp. 61.).