Solar, new houses and character zoning

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Solar, new houses and character zoning

Postby mattl » Tue Sep 22, 2009 3:58 pm

Hi,

I'm building a new house in an area of Brisbane that is zoned by council as "character residential". Does this limit the ability to put solar panels on the roof in any way?

Also, is using a north-facing roof the only option? The front of the house will face north, but I'm not sure whether:

a) we'd be allowed to install solar panels on the forward-facing roofline, or
b) we'd want to install solar panels on the forward-facing roofline.

Can anyone offer any insight or advice about how to approach this?

I'm interested in installing both solar PV panels and solar hot water, if that makes any difference.

Thanks,
Matt
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Re: Solar, new houses and character zoning

Postby mattl » Tue Sep 22, 2009 9:20 pm

If no-one is sure about the zoning question, I'd still love to know whether a north-facing roof is essential for solar power or solar hot water. Are there other options?
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Re: Solar, new houses and character zoning

Postby Bthree » Fri Sep 25, 2009 9:46 am

To obtain a rebate one of the criteria is ... a panel must face within 66degrees of north
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Re: Solar, new houses and character zoning

Postby lad » Mon Sep 28, 2009 2:39 pm

From my experience, you will need to check with your council or planning authority, regarding what can/can't be put on your roof in relation to character zoning.

If you wish to get good performance from your green investment, then the optimal orientation is north facing for maximum solar exposure.

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Re: Solar, new houses and character zoning

Postby Sandivee » Wed Sep 30, 2009 5:33 pm

True North also not magnetic.

Its about 11 degrees off magnetic.
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Re: Solar, new houses and character zoning

Postby SR76 » Wed Sep 30, 2009 10:20 pm

I think people get a bit too obsessive about the optimum azimuth and inclination. A few degrees here or there makes minimal if any difference. I did a simulation study last year (can't reproduce it now as it stayed with my old company, but it wouldn't be hard to re-do it of my own accord) and you have to move well away from north before you make a material change to the yearly average power.

If you want to see for yourself, google PVWATTS - a free program to run simple simulations of PV panel performance based on real weather data (or perhaps SUNNY DESIGN), play around with the angles and see the difference.
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