PV as an investment [RE-wrenches]

[Jerry Caldwell]

Joel,

Your numbers don't look right to me.  I don't see any
figures for system inefficiency.  Unless you have an
inverter that operates at %100 and an array that
always operates at 77 degrees F, you will never see
that kind of output on the system below.

Jerry Caldwell
 
 no one has commented about
> the math I used to come up with the return on
> investment. Are my numbers right?
> 
> 1kW AC PV system
> 5 sun hours per day
> 1,825 kWh/year PV production
> $0.12/kWh utility rate
> $219 value of PV
> $10,000 PV system cost before rebate
> $5,500 PV system cost after California $4.50/W
> rebate
> 3.9% return on PV system as an investment
> ($216/0.039 = $5500)
> 35% income tax rate
> 3.9% is equal to a 5.2% untaxed return on investment
> 
> If interest rates and stock returns were not so low
> and there were no PV rebates, I
> wouldn't even bother with this problem, but 5.2% is
> better than CDs and most stocks
> lately.
> 
> 
> 
> jay peltz wrote:
> 
> > Hi All,
> >
> > Heres my question.  Sure I give the customer many
> angles to make the system cost
> > effective, but how many people run into problems
> when you suggest:
> >
> > "Well its cheaper to reduce than produce.  We need
> to get you a new refer, washer,
> > lights etc etc.  "
> >
> > Then I show them the math, and its like major
> blank time.
> >
> > Just wondering what you all have run into.
> >
> > jay
> >
> > peltz power
> >
> > Smitty wrote:
> >
> > > Howdy all. Reading all these wonderful posts
> about the payback wall people
> > > have built around themselves before contacting
> us, something occurred to me,
> > > and that is this. I don't know how old all of
> you are, but I suspect most of
> > > us are middle aged. After WW II, a lot of lads
> came home to a booming economy,
> > > and badda bing, badda boom, the baby boom was
> on. Young couples in the
> > > strongest economy on earth, out achieving the
> American dream for decades. He
> > > is where we come in. A generation watching our
> parents getting houses, new and
> > > better appliances of all kinds, cars with fins,
> and the marketing boob tube
> > > teaching us new, bigger and better.
> > >
> > > Many of the customers we deal with nationwide
> are of this generation. Our
> > > company roots are in solar thermal, but we to,
> still hear the "P" word and one
> > > of my other dreaded words, "efficiency".
> > >
> > > Since some of these baby boomers are now
> yuppies, I find they look at things
> > > they don't understand as an investment, as
> opposed to a Ford Expedition. ME
> > > WANT. I'll spare you the whole spiel, but it is
> quite simple to explain the
> > > economics of solar thermal vs a furnace or water
> heater in terms of an
> > > investment. About this time the Mrs. pops up,
> "It will make our house look
> > > ugly.". And so it goes. Sometimes the wall comes
> down (sometimes on my head).
> > >
> > > One last point. I find it is much easier to sell
> solar to our BB brethren,
> > > after they have already made a luxury purchase,
> i.e. a remote hunting cabin,
> > > RV or a cold swimming pool.
> > >
> > > Smitty
> > >
> > > "Bill Loesch, Saint Louis Solar" wrote:
> > >
> > > > My compliments Jeff for the creative thinking.
> Anyone else have an
> > > > effective reply to utility comparisons?
> > > >
> > > > Bill Loesch
> > > >
> > > > RE-wrenches said:
> > > > >When asked either "what's the  payback", or
> "how does this compare to the
> > > > utility co.", I simply
> > > > >said  "It's the cheapest clean power you can
> buy."
> > > >
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