Reply To: Evaluation of solar pv tenders

[Richard Popenhagen]

Hi Jo

There is a free programme called RETScreen (developed by the Canadian Govt) that allows you to put in various PV systems, costs, inflation, interest rates etc to compare energy savings, paybacks etc. It has the climate data sets for most NZ towns and cities. You could use this to compare different systems. http://www.retscreen.net/ang/g_photo.php

 

 

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