Solar Panel Tilt Frames: Are they worth it?

tilt frames for solar panels

Tilt frames maximise energy yield, at a price.

Here is (another!) really common question that I get:

“I’ve got 3 quotes for solar: The first company says my roof is at the wrong pitch and wants to charge me hundreds of dollars extra to put my solar panels on tilt frames to optimize the amount of electricity I get. The second mob say it is fine to just put the panels flush on my roof and the third guy says that, yes my roof isn’t at the perfect pitch, but the best solution is to mount them flush to the roof and simply add an extra solar panel to make up for any reduced power output.

Now I’m really confused! Help!”

The problem here is that there are 2 extremes of solar installer in my experience: [Read more…]

How to work out if your solar system is performing properly.

a ruler

Stop guessing, start measuring!

I got an email from Dec in Melbourne this week who is very worried that his solar installers have sold him a lemon:

Hi Finn, Since my last email, my 4.0kw solar has been independently checked and I have been told it was found to be installed correctly. At this time it is producing only 1800w on a clear sunny day. It seems that no one has an answer as to why the production is low as the system is only producing an average of 7.2kwh/day. Do you have any idea as to what I can do to try and resolve this as I am really struggling with getting this sorted out.

So has Dec been sold a heap of junk? Is his solar power system producing enough power for its size, location and the time of year (June) ? [Read more…]

Pay-As-You-Go Solar Arrives In Australia

Sim Cards

PAYG Solar Too?

Have you considered installing a domestic solar system but have been put off by the initial cost? Then the recently-announced unveiling of a radical new pay-as-you-go plan in Australia may be for you.

According to an April 21 report in the Sydney Morning Herald, an American company, Sungevity Inc., has teamed up with Lismore-based solar installer Nickel Energy to set up an Australian subsidiary, Sungevity Australia, which offers free solar panel installation. [Read more…]

Hybrid Solar Systems Part 3: Costs and Payback

solar panels and a dollar sign

What’s the payback?

Note: This post was written in 2012 and is way out of date. For the latest payback figures  please read this page which is kept up to date >>> Are Solar Batteries Worth It


In my previous 2 posts I looked at the concept and design of Hybrid Solar systems.

The main conclusion of those 2 articles was that

a) Hybrid solar rocks!

b) But you gotta pay for it!

So the question this post will try to answer is:

How Much Extra Does Hybrid Solar Cost?

and bearing in mind the extra costs:

What is the payback of Hybrid Solar Compared To Regular Grid Connect Solar?

So let’s look at the cost of a quality 5kW system and then see what it costs to upgrade it to “Hybrid”. [Read more…]

Hybrid Solar Part 2: How To Future Proof Your Solar System

Hybrid badge

Hybrid Solar Too?

Please note: this post was written in 2012 and is way out of date.

>>> Please visit this page on solar batteries, which is constantly updated. <<<


In my previous blog post on hybrid solar systems (aka grid connect with battery backup) I promised to follow up with a post that went into more detail on the costs and give examples of inverter hardware that can be used to make such a beast.

I’ve realised that if I go into the costs and paybacks then this blog post may be longer than War and Peace. So in this post I’ll cover the hardware and I’ll save the financials for next time.

As I said in the previous post, your motivation for spending more on a hybrid solar system will likely be either: [Read more…]

The inflated STC Price Scam : The Solar Cowboy’s Favourite Trick?

a cowboy

Don’t fall for it!

I’m angry.

I get a lot of emails asking for me to look over quotes. I try to answer every one. Sometimes it takes a couple of weeks to reply, but generally I manage to reply.

Tonight I got 3 emails in a row with quotes from 3 separate companies which all appeared to be trying the same trick. They appear to be deceiving the customer into thinking they are getting a great deal and then hitting them with a bill for thousands more than the quoted price when the system is installed.

I love the solar industry, and to see these guys operating like this makes me so freaking angry I want to scream! [Read more…]

Grid Connected Solar Panels with Battery Backup (aka Hybrid Solar)

A solar panel charging a battery

Batteries + Solar?

Note: This post was written in 2012 and is way out of date.

>>> Please read this post on solar batteries for the latest information. <<<


A few weeks ago I blogged about my mate who really hates his electricity company. In fact he hates them so much he wanted his new house to have an expensive off grid solar system with battery backup, diesel genset, the works.

I blogged how the cost of going off grid with solar would be over $50,000 compared to about $12,000 for a standard, grid connect 5kW system and that it would be economically barmy to go completely off grid if your home already has a connection to the grid which you can use.

[Read more…]

kW, kWh and kilowatt/hour : What do they stand for?

An electricity meter reading kWh

Don’t confuse kW and kWh. It matters!

One of the most common sources of confusion I encounter when talking to non-electrical people about solar power is related to the terms kW and kWh. What do they stand for? What do they mean? And what’s the difference between the two? Watch the video, or read below to find out…

Folks who are really confused also throw the term “kilowatt/hour” into the mix. I’ll deal with that doozy in this footnote1.

Starting with the absolute basics

Please excuse this post if you think I am explaining the bleeding obvious! But I think it is vital to write a post that describes these key units of electricity in a way that requires zero prior knowledge of anything electricity-related.

So here is my humble attempt to answer the question:

What is the difference between a kW and kWh?

[Read more…]

Old School Solar Sales Tactics That You Should Not Tolerate

Solar Power is a very new and very fast growing industry. That makes it an exciting thing to be part of, and attracts a lot of interesting, enthusiastic and hard working people, most of whom believe passionately in what they are selling.

Unfortunately it also attracts people and companies that appear to have no other motive than to make as much cash as possible in as short a period of time as possible. Now there is nothing at all wrong with trying to maximise the profitability of your business. That’s just good business. But if you are maximising your short term profits by throwing your ethics out of the window, then that is wrong, dumb and short sighted. In the 21st century your actions will catch up with you.

That is one of the main reasons I started collecting Solar Installer Reviews.

Over the past 4 years, I’ve found that the common theme amongst the bad ‘uns in the Solar Power game seems to be their old school, hard sell, sales tactics. If you’ve ever been cold called by a solar power company knocking on your door, you’ll probably recognise some of these tactics. I personally believe these tactics are wrong, counter productive, insulting to the customer and have no place in this industry. See if you agree:

[Read more…]

Interview with Paul O’Reilly of the Rainbow Power Company

Rainbow Power Company Logo

Rainbow Power Company – one of Australia’s oldest solar companies

In this, the first in what we hope will be a number of interviews with solar opinion leaders, business people and experts in the solar industry we chat with Paul O’Reilly, director of the Nimbin-based Rainbow Power Company. Sit back and enjoy as Paul talks feed-in tariffs, the almost constant boom and bust cycles in the Australian solar industry and his optimism for the future.

The solar industry must have changed a lot since Rainbow Power Company first set up? Do you think this has been for better or worse?

[Read more…]

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