Thanks again, Bill, I'll investigate PVSYST also, as I can't get PV Watts either version to work for me online beyond 4.0kW(?) and no data points for new zip code anyway, and in old zip code, NREL's map servers seem to not like me in any browser. I did manage to figure out correct numbers using handy conversion chart factors on Wikipedia under insolation and some manual calcs (was a messy transcribe into .xls). http://en.wikipedia.org/wiki/Insolation Peter D. _____
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bill Brooks Sent: Tuesday, November 04, 2008 11:07 AM To: 'RE-wrenches' Subject: Re: [RE-wrenches] Insolation radiation to performance numbers... 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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