[Equest-users] Solar PV

John Aulbach jra_sac at yahoo.com
Fri Dec 31 09:14:45 PST 2010


Rick:

Have you tried PVWatts? It is a pretty good "30,000 ft" level assessment of PV 
in different regions.

John Aulbach
Partner Energy




________________________________
From: Nick Caton <ncaton at smithboucher.com>
To: Routh Consulting Engineers <routhconsultingengineers at charter.net>; 
equest-users at lists.onebuilding.org
Sent: Mon, December 27, 2010 7:31:57 AM
Subject: Re: [Equest-users] Solar PV


Hi Rick,
 
My understanding is the PV array installation industry is very regional, and 
products commonly available and “normal” to one part of the country may not be 
available in another.  I’d advise calling up a local (to the project) 
vendor/provider of commercial PV arrays and have them send you a package of 
information regarding what said 100kW system would be composed of.  

 
Inform them you’re modeling the system for feasibility and want any/all 
technical literature available on the inverter/panels.  Suggesting multiple 
projects/installations may be in the pipeline might crank up the level of 
assistance offered.
 
If they offer to “model” the system for you with their own 
software/spreadsheets, it wouldn’t hurt but take anything with a grain of salt. 
 I’ve yet to see a proposal/evaluation from a PV provider with ROI figures 
anything close to my objective evalutations.
 
eQuest requires so much in the way of nitty-gritty specifics to correctly model 
any PV system that I’m inclined to suggest – for a “quick and dirty” evaluation 
you might be better off seeking a different software package/tool.  You might 
want to ask the [bldg-sim] list for alternatives others have used.
 
~Nick
 
 
NICK CATON, E.I.T.
PROJECT ENGINEER
Smith & Boucher Engineers
25501 west valley parkway
olathe ks 66061
direct 913 344.0036
fax 913 345.0617
www.smithboucher.com
 
From:equest-users-bounces at lists.onebuilding.org 
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Routh 
Consulting Engineers
Sent: Sunday, December 26, 2010 12:00 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Solar PV
 
I have been tasked with modeling a solar PV system to offset a portion of the 
energy required by a laboratory. The intended capacity is a peak of 100 kW. 
eQuest has very few defaults associated with solar PV systems. I am looking for 
anyone who might have modeled a similar system that could fill me in with some 
appropriate parameters. My effort is a basic scoping and budgeting type of 
effort for pass-fail feasibility, so rough general parameters are appropriate. 
If this gets through the pass-fail test, more detailed parameters will be 
developed later. Any help anyone could provide would be greatly, greatly 
appreciated.
 
 
Rick Routh
Routh Consulting Engineers, Inc., P.S.
P.O. Box 3187
Pasco, WA  99302
(509) 547-8262
(509) 542-0650 FAX
routhconsultingengineers at charter.net


      
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