Don,
PV:WATTS version 1 is easiest to use and it is available at http://rredc.nrel.gov/solar/calculators/PVWATTS/version1/. It covers fixed tilt, single- and two-axis tracking for standard crystalline silicon modules. My confusion had to do with whether the 5.9 kWh/m2/day was a fixed tilt value or single-axis tracker. Not knowing the location makes that impossible to figure out. PV:WATTS version 2 is what the CSI program uses to calculate EPBB rebate. Unfortunately, the EPBB calculator does not access the single- and two-axis tracking parts of PV:WATTS version 2. PVSYST is available online from Switzerland at www.pvsyst.com Bill. From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Tuesday, November 04, 2008 10:54 AM To: [email protected] Subject: Re: [RE-wrenches] Insolation radiation to performance numbers... In a message dated 11/4/2008 9:45:57 A.M. Pacific Standard Time, [EMAIL PROTECTED] writes: If really want to get serious, use PVSYST. Hi Bill, Where is this available?. I'd like to check it out. Thanks, Don Loweburg _____ Plan your next getaway with AOL Travel. Check <http://pr.atwola.com/promoclk/100000075x1212416248x1200771803/aol?redir=htt p://travel.aol.com/discount-travel?ncid=emlcntustrav00000001> out Today's Hot 5 Travel Deals!
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