From: Carl Emerson <[email protected]>
Sent: 15 April 2012 10:16 p.m.
Subject: Array Spacing for optimum performance.
Hi there,
Can I raise a design issue with large grid-tied arrays.
Using WilliamÂ’s spreadsheet for array spacing leaves me with several questions unanswered.
Assuming the array is inclined for max year round performance, one could then space the array for no shading for a certain sun Elevation and Azimuth.
The question I have is what is the sweet spot when compromising shading for array spacing in large arrays.
Narrower spacing means more panels in the array and better output in summer.
Wider spacing means better winter performance with less panels and less annual power production.
Is there a guideline available to optimise these factorsÂ…
Thanks for your help.
Carl Emerson
Freepower Co.
Auckland N.Z.
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