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OLD ROCK STAR WILL GIVE YOU $8000 1-May-2009 At 1:13:20 PM lacto

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On 1/05/2009 evanbb wrote:
>On 30/04/2009 lacto wrote:
>>you will get YOUR money back within 2 years and with judicous use maybe
>one
>>or less .
>
>I think that's a bit of an exageration....6.6% return looks more like
>an 16 year payback to me, ignoring NPV calculations. Even still that's
>generous for PV, and unlikely to be achieved that far south. Evac tubes/hot
>water heating are different though, and their payback is much faster, again
>dependent on lattitude.
>
>How many cattle do you have? Had a look at biogas? You'd probably require
>some infrastructure (a sludge digester) but you could kill (or badly maim)
>2 birds with one generator there; electricity for cooling and waste heat
>for heating water. Or more easily, you could just burn the gas for heating
>water, and in NSW (not sure of the Vic equiv) you'd be eligible for NGACs.
>I know of a couple of piggeries that are running 12a rotaries off their
>biogas load, but I guess pigs are a bit easier cos they all shit in a room,
>rather than a paddock. Could you train the cattle where to crap?

.6.6% is the return I have on my system but also where power is increasing by about 10% p.a and I can claim depreciation on the capitals costs so actual return to me is much greater . As for digesting cow shit the capital costs are huge , and energy consumption would probably be equal to energy produced .

Back to the economics of a 1KW pv system.

OUTLAY $480 for meter change over deposit $2500 returned when grant paid .
Nett cost $480.

RETURN Figure quoted for both Melbourne and Sydney 1400 Kwh p.a.

Power (origin energy = 17.5 cent per kwh plus 10 % gst ) =1400*1.1*0.175

=$269.50 p.a. saving minium
NOW if you actually feed back unused power to the grid current origin energy payment is 23.5 cents going up to 66 cent next financial year .
Say you put
10% of 1400 back into the grid that is an extra $32.90 going up to $ 92.4 next year
20% of 1400 65.80 184.8

23% back into the grid would see you get all your $480 back in a year !!!!!!!
In our area we produce 1600 + pa and vurrently back feed 25 % of produced back into the grid

This might not be the most ideal scheme but it is financially worth while and I believe you are crazy if you dont partake before the $8000 dissappears