Solar Power – No North Facing Roof

Retirement Solar

Conventional wisdom has been that you needed a North facing roof to mount your solar panels . . . . . . but it might be time to re-think!

Cost of Panels

In the early 1990 when people first really started looking at solar power for the home the cost of pv panel alone [read more...]

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Solar Electricity – Retirement Investment

Retirement Solar

Downsizing to a smaller new house for your retirement? Don’t forget to think about solar power.

Last week I revised a post ‘Solar Power is it Worth It?‘ but if you are approaching retirement, like me, there can be an even bigger financial advantage in having solar installed.

Differing Lifestyle

Because we are both [read more...]

Solar Electricity – Is It Worthwhile? (2014)

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There is a lot of marketing information around about Grid Connected Solar Panels but not many independant facts. Here’s an example of an evaluation of a basic system for a house.

We use around 16kw hours (kwhr) of electricity per day which is fairly typical; For each 1kw of solar panels we can expect [read more...]

Solar Power – Reasons for Low Output

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For each kw of installed capacity of solar panels on average you can expect to generate 3.5kwhrs per day. This can however vary considerably for a variety of reasons.

Monthly Variation

On a peak summer day you may be able to generate 6 or 7kw hrs per day.

In winter it can be quite different. [read more...]

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Why I Don’t Have Mono-Crystalline Solar Panels

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Several people have commented that my panels look different to those on other houses. Most solar PV installations use Mono-Crystalline panels, because they are smaller for the same power rating. However the panels on my roof are Kaneka Thin Film Panels. Here are the reasons why:

Efficiency In Real World Temperatures

When [read more...]

Winter Sun

Winter Shade dwg

If you are going to get as much winter sun inside your house you want to minimise shading from neighbours and boundary fences/hedges.

Here is how to check…………………..

Ideally you should be aiming for around 6 of hours of sunlight on the shortest day (21st June). To get the exact angle for your location you [read more...]

Solar Panel Alignment

The suns position in the sky varies throughout the year and over each day.

The ideal situation is when the sun is hitting the panels closest to a perfectly perpendicular angle (90°).

So in Australia, what angle and orientation are best?……….. Well when mounting solar panels there are two elements of the alignment that affect [read more...]

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Types of Solar Panels for Electricity

From some of the adverts you see you would think there is only one sort of solar panels…. in fact there are several alternatives.

The type of panels generally available are:

Monocrystalline solar panels The highest cost but the most efficient with a long history of use. Poly-crystalline Similar to mono-crystalline panels, but the [read more...]