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NC-2009 EAc2:On-Site Renewable Energy

PV Watts for other countries?

Help Please! Our GBCI reviwer is asking us to: Provide screenshots or output calculations from a simulation program showing how the annual energy savings was determined for the photovoltaic system. They suggest using PV Watts, however PV Watts seems to be not usable for our project located in the Carribean as it says "No PV Watts data at mouseclick". Any suggestions? Is there another software we can use?

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Profile picture for user Nadav Malin
Nadav Malin
CEO
Green Commons, LLC
LEEDuser Expert
586 thumbs up

Fri, 08/26/2011 - 03:23

Whoever engineered the system must have some basis for estimating electricity output--it should be enough just to share their calculations. You'll want to to factor in climate data (solar insolation), orientation and slope of the panels, and their generation efficiency, as well as an estimate of losses in the balance of system components (such as DC to AC conversion). PVWatts has pretty sophisticated algorithms for doing this, but there are simpler estimates you can use. Check with a local engineer with solar experience if your provider can't do it.

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