PV buydown policy request [RE-wrenches]

Wed Apr 28 12:29:54 PDT 2004

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HI Bob-O,

I second what you've said.

I don't push the inverter
I do recommend production incentives
I do recommend low/free interest loans.

I've got hundreds of photos to show that front end incentives make for some
really bad looking install's!!

jay

peltz power

----- Original Message ----- 
From: "Bob-O Schultze, Electron Connection" <econnect at snowcrest.net>
To: <RE-wrenches at topica.com>
Sent: Wednesday, April 28, 2004 7:57 AM
Subject: RE: PV buydown policy request [RE-wrenches]

>
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> Brian, Bob, Allen, ETAL,
> Agreed, agreed, agreed.  The front end loaded incentives are ever
> worse than we've been discussing. What they do is maximize the PV in
> relation to the inverter. When there is a financial incentive to do
> that, it's going to happen nearly every time. It's utterly stupid in
> every way but financially because of the way the incentives are set
> up.
> Good electrical practice is to load things up only to 80% of
> capacity. We do that with conductors, bussbars, etc., all the time.
> Every published inverter curve I've ever seen shows the sweet spot of
> maximum efficiency somewhere around the 75-80% of capacity line. It
> just stands to reason that inverters (or any other electronic device,
> for that matter) will last longer if run at 80% rather than 100% of
> capacity. Heat kills. Screw five year warrantees, the SYSTEM should
> last 20 years. In a production credit situation, the design criteria
> would be maximum efficiency and long life, not this bullshit upfront
> buydown. This is something the Wrenches "wing" of SEIA (and CalSeia
> in particular) should be focusing on. If the maximum allowable PV PTC
> watts were limited to the nameplate watts of the inverter, not only
> would systems last far longer, but the public benefit monies would go
> about 10% further. That ain't hay.
> Bob-O (the Grinch)
>
> >Hi all -
> >
> >My two cents: Production-based incentives are the best way to drive
> >the industry to the places we want to be. In fact, I'll be
> >presenting a paper on this at the ASES conference. When it comes to
> >site selection, installation quality, component reliability, system
> >performance, and end-user visibility, there's no benefit to the
> >front-end buydowns. If a site has a problem from Day 1, it's
> >possible that nobody would ever know. If tax payers are looking to
> >get the most for their money, this is the way to do it - money for
> >energy, not the theoretical possibility of energy.
> >
> >Beyond that, it incentivizes installers and manufacturers to build
> >systems that lasts as far into the future without servicing as
> >possible. Under the current system, there's no immediate financial
> >advantage to a home owner/installer for installing a product that
> >lasts 20 years over one that lasts five. Installers can focus not
> >just on initial install cost, but life cycle cost. Warranties alone
> >don't cut it - who's to ever know the system is working if there's
> >no feedback mechanism?
> >
> >This financial system also eliminates any of the controversy and
> >uncertainty from the myriad of different operating points inverters
> >and modules work at - one no longer needs to deal with a single
> >number that may or may not correspond to an oft-seen reality in the
> >field.
> >
> >Overall, I think it's not a matter of whether it's a better system
> >or not, becuase it so clearly is - it is just a matter of how you
> >get everyone on board.
> >
> >
> >Brian
> >
> >
> >Brian Farhi
> >Fronius USA, LLC
> >Solar Electronics Division
>
> -- 
> Bob-O Schultze, Electron Connection
> PO Box 203, Hornbrook, CA 96044
> 800.945.7587 or 530.475.3402
> fax 530-475-3401
> www.electronconnection.com
>
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