Estimation of the output of a Solar Array in the Falkland Islands.

What we are trying to provide is a way to estimate the annual output of a solar array in the Falkland Islands so people can make an informed decision if the installation of a solar array will be financial beneficial. To estimate the annual out of at solar array using the data from the GIS resource mapping requires a number of formulas to calculate the output of a solar array. The standard estimation method is the easiest way to calculate the estimated output of a solar array in the Falkland Islands. To use the formula you will need to know, the location and size of the array that you plan to be installed, also the pitch of the array from the horizontal and the orientation from north. Then - by reading the map to understand which region the array is located, and the related table to get a resource available value, along with an estimated shading factor value - the estimated output of a solar array can be calculated. 

Standard Estimation Method.

Estimated Annual Output (kWh) = kWp x Kk x SF

• kWp = Size of Solar Array in kilowatt Peak (kWp)
• Kk = Resource available in kilowatt hours (kWh)

• Determine the array pitch (degree from the horizontal)
• Determine the array orientation (degree from north, either east or west)
• Determine the region of the Falkland Islands the array is located on the solar map
• Look up appropriate table

• SF = Shading Factor (SF)of the array

• Minimum shading of the array is desired, if there is shading estimated the area of the array that would be shaded.
  • If 0% of the array is estimated to be shaded, SF = 1
  • If 25% of the array is estimated to be shaded, SF = 0.75
  • If 50% of the array is estimated to be shaded, SF = 0.5
  • If 75% of the array is estimated to be shaded, SF = 0.25
  • If 100% of the array is estimated to be shaded, SF = 0

Example,

If Jo lived on Grand Jason Island and wanted to install a solar array, the things Jo would need to know are:

• Size of the array - Jo is considering installing a 4kWp array
• Pitch and Orientation of the array -  Jo has a building with a roof that has a pitch of 25° and is orientation 5° off north
• Shading - Jo estimated that there will be a maximum of 25% shading from a nearby tree.

Looking at the solar map, Jo can see Grand Jason Island is located in Region A. Jo then looks up Region A’s table and, using the pitch and orientation of the building, can see that Kk resource value would be 853 kWh.

Now, having all the required information Jo can calculate the estimated annual output of the array,

Estimated Annual Output = kWp x Kk x SF = 4 x 853 x 0.75 = 2559kWh

Below is the solar map of the Falkland Islands with a grid section overlayed upon it. The grid sections show the regions, labeled A -J, to help with finding the right data.

Once you have found the correct grid reference click on the corresponding link below to find the revelant data in your region.

For Information on Region A pdf Click Here (116 KB)

For Information on Region B pdf Click Here (117 KB)

For Information on Region C pdf Click Here (116 KB)

For Information on Region D pdf Click Here (116 KB)

For Information on Region E pdf Click Here (116 KB)

For Information on Region F pdf Click Here (116 KB)

For Information on Region G pdf Click Here (117 KB)

For Information on Region H pdf Click Here (116 KB)

For Information on Region I pdf Click Here (116 KB)

For Information on Region J pdf Click Here (116 KB)