Fixed vs. Tracking for Pumping (was:PV Trackers) [RE-wrenches]

[John Raynes]

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There's also the issue of low yielding wells.  Adding PV watts isn't an 
alternative in this case, because the well will only yield at a given 
rate.  If you want more total GPD in those cases, you need to pump more 
hours of the day, and that means a tracker, whether it's convenient or not.

Personally, but I prefer to avoid the hassles of trackers for customer 
systems.  But sometimes the use of a tracker in solar pumping is strongly 
indicated.

This is probably more an issue out here in the west, where we're much more 
likely to spend big$$ on deep, low-yielding wells, and ranchers want to get 
every last drop that they can.

John Raynes
RE Solar
Torrey UT

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