Module Ratings--was: About the CEC [RE-wrenches]

[Joel Davidson]

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Ignorance is not bliss. Anyone really concerned about manufacturers fudging 
on their STC ratings is free to speak up. There are lots of reporters 
begging for another consumer ripoff story. Who are the guilty manufacturers? 
Who is holding back the facts? Besides, honest ratings are an ideal 
marketing angle. Here's an ad slogan for some smart, honest manufacturer - 
Get watt you pay for.

Joel Davidson

----- Original Message ----- 
From: "Bill Brooks" <bill at brooksolar.com>
To: <RE-wrenches at topica.com>
Sent: Tuesday, April 05, 2005 3:31 PM
Subject: Module Ratings--was: About the CEC [RE-wrenches]


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Joel,

So your saying that ignorance is bliss...? I know the PTC rating on the CEC
list has its problems (no testing to support the data). I've always called
it the bastardized PTC rating (since its not a PTC rating at all, its a
module dc rating at PTC conditions--big difference--and for all those who
think otherwise, there is no testing to support the PTC data-did I say that
already?)--therefore I refer to it as the CEC rating.

That being said, we need something to keep manufacturers from consistently
fudging 10% on their STC ratings. We also need something to reward
manufacturers that don't fudge their ratings. I the STC method used for New
York, so I know that method can work--it still does not address the
underlieing problem. Our industry needs to get real. The inverter
manufacturers have had to ante up on the performance side so why shouldn't
the module manufacturers (that are selling everything they make and then
some). Module real STC outputs are farther off their nameplate ratings than
the inverter manufacturers were off on their published ratings--that's a
fact. It's time to do something about it.

Bill.



-----Original Message-----
From: Joel Davidson [mailto:joeldavidson at earthlink.net]
Sent: Tuesday, April 05, 2005 1:43 PM
To: RE-wrenches at topica.com
Subject: Re: About the CEC [RE-wrenches]

PTC AC ratings are a waste of time. When the California incentive program
was being developed, it was decided to use PTC AC to calculate rebates to
protect consumers from sellers giving inaccurate power and energy estimates
either intentionally or from lack of knowledge. DC STC based incentives work
well in other states. Joel Davidson

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