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'[EE] NZ Alternative Energy site'
2006\06\10@001709 by Russell McMahon

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NZ supplier of solar thermal and photovoltaic, diesel alternator, wind
and other 'energy converters'.

       http://www.whatpowercrisis.co.nz/

APPEAR to be Auckland based.

Their solar thermal systems would seem to be competitive with mains
electricity, which is somewhat of a surprise to me.

       http://www.whatpowercrisis.co.nz/shw_lowpress.html

4 m^2 evacuated tube solar heater for $NZ1100.
You still have to plumb, pump and control it, but even then the price
looks good.

In Auckland NZ the mean kWh per m^2 per day is about 2.5 in Winter and
about 8 in Summer.
Allowing a low mean of 3 kWh/m^2/day, efficiiency of 50% thermal
recoverable and electricity at $0.12/kWh (conservative and getting
worse) that gives an energy output $ value per year of  4 m^2 x 3
kWh/m^2/day x 365 wioy x 50% x $0.12 ~~= $250/year for the panel
alone. The 50% efficiency figure affects this linearly. Even adding
own labour and other costs that looks like a payback of under 10 years
using a proper DCF analysis which is better than what I'd expect.


       Russell


2006\06\10@070659 by Richard Prosser

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Hi Russell,

Looks interesting. The Contact page does indicate an Auckland address.

I've been wondering how long it would be before someone managed to
import some Chinese evacuated tube solar collectors - it was something
I was thinking of looking into myself.

Prices on inverters and batteries (and solar panels) don't look to be
excessive either.

Thanks for the info.
Richard P



On 10/06/06, Russell McMahon <spam_OUTapptechTakeThisOuTspamparadise.net.nz> wrote:
{Quote hidden}

> -

2006\06\10@083214 by Dave Lag

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Russell McMahon wrote:
> NZ supplier of solar thermal and photovoltaic, diesel alternator, wind
> and other 'energy converters'.
>
>         http://www.whatpowercrisis.co.nz/

For those that might not have stumbled across it
http://www.homepower.com/
seems AFAICT to be the only publication out there
a bit "mother earth news"-ish ( hippie commune flavour ie- folks all
look like jinx,josh or me ;) but practical- not bad.

Russell- If you surf across a review/comparison of shingle/roof
covering style solar units or BIPV (Building Integrated Photovoltaics
would be most appreciative.

Dave

2006\06\10@090939 by Jinx

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> For those that might not have stumbled across it
> http://www.homepower.com/
> seems AFAICT to be the only publication out there
> a bit "mother earth news"-ish ( hippie commune flavour ie- folks
> all look like jinx,josh or me ;) but practical- not bad.

Hah, well, if I'm going to first in a list that doesn't include "Hit" in
the title, I s'pose "Hippy" is as good as any

I had a momentary brush with alternative energy this week. A fellow
PIClister, a shy lurker, almost got involved with a project for the
Waitakere Council, and thereby almost got me involved too. But in
the end they decided to import one of these from Scotland. Hoots !

http://www.renewabledevices.com/swift/images.htm

Pity. There were readies available for local developers ;-((

Initially the council were considering a vertical blade design, something
along these lines (I think)

http://en.wikipedia.org/wiki/Darrieus_wind_turbine

Those in Auckland may know the site - Olympic Park, opposite the
Gull Service Station in Wolverton St, New Lynn

Um, if that was meant to be a secret, disregard

2006\06\10@092031 by Russell McMahon

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Their Luxeons are over priced fwiw.

> Prices on inverters and batteries (and solar panels) don't look to
> be
> excessive either.

2006\06\12@044817 by Alan B. Pearce

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>For those that might not have stumbled across it
> http://www.homepower.com/
>seems AFAICT to be the only publication out there
>a bit "mother earth news"-ish ( hippie commune flavour
>ie- folks all look like jinx,josh or me ;) but practical- not bad.

Hmm, I have pointed this list there in the past. There is also the original
Mother Earth News magazine website at http://www.motherearthnews.com/ which
is also a bountiful source of information about living ff the land around
you.

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