Search Results for: nsw

Will Solar Power Save The Planet?

April 4, 2011 2014-01-05T21:07:29 by Leave a Comment

I suppose some would call me a “Greenie”.  Heck, I call myself that sometimes.

Like any good Aussie, I love the outdoors, the sunshine and the surf. I’m deeply grateful for the beauty and majesty of our planet. It pains me when I see it being brutalized, plundered or wasted in the name of laziness or greed.

And I do believe that we have a responsibility to be good stewards of the earth’s resources. I believe that a lot of the political and economic tension that our world currently faces could be reduced with more responsible use of the limited resources we have at our disposal.

And I believe solar power will play a central role in an improving the relationships with our political neighbours and our natural world.

But, I don’t believe solar power is the answer to all our problems. I don’t believe solar power is the great savior of our planet. I don’t believe solar power is right for everyone. I don’t believe we should make too big a deal of solar power.

Why not? Because it’s too easy. [Read more…]

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Got A Shaded Roof? Then don’t buy solar without a Suneye shade analysis.

February 10, 2011 2017-05-03T13:45:52 by 53 Comments

Shade is the number one enemy of a high performance solar power system.

If your roof has substantial shading between 9am and 3pm then installing solar panels is probably going to be a really bad investment.

If you are confident that your roof roof has absolutely no shading, then solar can be a great investment thanks to the current handouts by the Federal and State governments in terms of Solar Rebates and Solar Feed In Tariffs. [Read more…]

Filed Under: Solar Panels Tagged With: , , ,

Are you getting the best Solar Panels? The Top 10 Things To Check

January 10, 2011 2016-06-18T14:12:28 by 352 Comments
the best solar panels

How do you know if they are going to perform on your roof?

There are a bewildering array of solar panel brands out there. How do you sort the wheat from the solar chaff and be sure you are getting the best solar panels for your roof?

My advice is go thru the spec sheet for each panel and judge them on the following criteria.

If you haven’t got a spec sheet, then get another quote!

If the spec sheet combined with the quote doesn’t have the answers, call up the solar supplier and ask. If they don’t know the answers, that’s a bad sign.

The Top 10 Criteria [Read more…]

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Solar Panel Warranties – How to make sure yours is worth more than the paper it is written on:

December 31, 2010 2017-07-05T14:21:51 by 4 Comments

All solar panels should come with 2 types of warranty:

  • Power Output Warranty : usually 20-30 years
  • Material Warranty : usually 2 to 10 years

1. The Power Output Warranty

This covers the power from the panels. Usually if the power drops to less than 80% of the specification in the first 20-30 years, you can make a claim on the warranty.

That’s all well and good but you need to be confident that you will firstly be able to measure and prove that the power has dropped, and secondly be able to contact the correct company to get any warranty claims honored.

Ask to see the warranty details in writing. Get the installer/salesperson to show you where it states how the power from your panels will be measured if you suspect that the power has dropped, who will measure it and if they will charge you for the privilege.

Also ask them to show you where it says how the warranty claim will be handled, who is responsible for honoring it and what costs you might incur. Will they charge you to remove, ship and test the faulty panel and then ship and install the new solar panel.

If your solar installer or salesperson can’t answer these questions then that is a sign that they are badly trained or inexperienced or both.

If the warranty is covered by the installing firm, ask what the backup is if they are not around in 20 years – (This even applies to the bigger solar installers – one thing the world has learned recently is that even huge companies can go bust if the economy changes…). If you have to go back to the solar panel manufacturer, then go to the manufacturers website and see if you can find warranty details. If you can’t find the website or the warranty details that is a bad sign…

Another great question to ask is: “What % of your revenue do you put aside for future warranty claims?” and also “What % of the solar panel manufacturer’s revenue is put aside for future warranty claims”.

The final thing to check out is whether this warranty is “linear” or “stepped”. A linear warranty of 80% (i.e. a 20% power drop) over 20 years would cover you if the output dropped by more than a twentieth of that 20% in the first year (i.e. 1%), then 2% in the second year and so on… at that linear rate of 1% per year until the solar panels were 20 years old.

Linear warranties are rare, but some of the more expensive panels do have them. The more common “stepped” warranty means that, for the “80% over 20 years” example, your panels can lose 19% in the first year and you won’t be covered unless they lose another 1% in the remaining 19 years to get under that 80% threshold.

2. The Material Warranty

The material warranty (2-10 years) is usually for defects that may cause the power of your panels to drop – but don’t cause the power to drop below the “power output warranty” threshold.

So if you have a power output warranty of “80% over 20 years” and some water gets into one of your panels causing the overall system power to drop 19% – this would be covered by the “material warranty”, not the “power output warranty”.

This can be for stuff like delamination of the backing sheet, discoloration of the solar panels (can look really naff!), solder joints coming undone and bypass diodes failing.

Again – ask your solar installer or sales person to give you a comprehensive list of things that are covered by this warranty.

Finally: watch out for get out clauses

In some of the small print in the terms and conditions published by the bottom end of the solar market, I’ve seen clauses that say your warranty isn’t valid unless you get your system “serviced” every 2 years.

If you have one of these clauses, find out exactly what defines “serviced” and how much it is going to cost. This is especially important if you are buying a really cheap solar system with panels of questionable lifespan. The last thing you want is for your panels to fail after 3 years and then have the warranty knocked back because you didn’t get your panels “serviced” within 2 years!

Filed Under: Solar Panels Tagged With:

Don’t Install Solar…Until You’ve Read This

December 14, 2010 2017-05-03T13:48:58 by 7 Comments

I had a cracking couple of days at Narnu farm, 1hr south of Adelaide, a coupla weeks ago.

We go there with the kids who love it. It’s a hobby farm where the kids can feed the animals and go horse riding and all that good stuff.

As soon as you drive in, you can’t help but notice their 2kW Solar System made up of about 30 60W Kaneka Solar Panels on the roof of the office building.

So is this blog post going to be singing the owners’ praises for getting solar and doing their bit for the planet?

Short answer: no.

Being the grumpy old contrarian that I am, I’ve got 2 big problems with this particular install.

Here’s the first error with this install:

This photo of the solar system (see the panels on the roof on mounting frames) was taken at 10:30 in the morning. Can you spot the problem?

Solar panel shading

The tree on the right is casting a bloody huge shadow across almost all the panels! Ouch!

That’s bad. However my real problem with the install is this:

They have made zero attempt at energy efficiency before or after installing solar.

It is about five times cheaper to perform energy efficiency than it is to install solar to save the same amount of electricity.

So, although solar is a wonderful thing, you should always do everything you can to maximise the energy efficiency of your home or business first.

Here are some examples of really bad energy wastage that could have been addressed with minimal time or investment:

1) They are still using incandescent bulbs! Check out the photo – I haven’t seen these old things in years.

an energy shocker

I counted about 16 of these energy guzzling devices of satan. Let’s do some really simple sums:

Assume each one is on for 4 hours per night (a conservative assumption – I saw lots of them left on all day).

The amount of energy they will consume in 1 year is: 60W x 4 hours x 365 = 87.6kwh per year per bulb = 1401.6kwh per year total.

A CFL bulb will use about one tenth of the electricity of the incandescents, so they are wasting about 1250kWh per year, for the sake of spending about $60 on new bulbs.

That energy that is being wasted is probably close to the amount of electricity generated by 1kW of solar panels – half of their solar system!

Next: Check out the fridges…

They have at least 6 of these antiques.

A modern fridge of a similar size can be had for about $500 and will use a quarter of the electricity!

So for about $3,000 they could be saving about 3000kWh per year. That combined with the bulbs should easily give them energy savings greater than the output of their entire solar system (which probably cost them about $20,000 when they bought it).

Other shockers which should have been replaced are the antique window rattler Air Conditioners and the electric storage hot water systems. The latter is especially crazy for accommodation that is most likely empty for many weeks a year, because you get hot water whether the place if fully occupied or not.

The moral of the story is: Yes – solar is fantastic. But before you get that solar system at least do the most basic energy efficiency measures: i.e. bulbs, appliances, hot water, draft sealing, window shading… Otherwise you are getting a much bigger system than you really need.

A good solar installer will talk you through all this before selling you a system.

Filed Under: Solar Installation Tagged With: ,

Grid Connection of your solar system: should you organise it yourself?

December 2, 2010 2014-01-05T18:51:59 by 2 Comments

Short Answer: no

If you are buying a solar system for your home, I would strongly recommend using a firm that will organise the new meter, grid connection (including new meter calibration) for you.

Trust me: you really don’t want to try and deal with the electricity companies’ bureaucracy yourselves, leave it to the solar supplier who has done it a thousand times before.

Here’s a story that Gary emailed me yesterday. Basically, even though he paid for the solar supplier to organise the install for him, he ended up organising the final part himself! The moral of the story is: Get in writing a date by which you will be connected to the grid with a fully functioning import export meter correctly configured for billing.

“My wife was a contracts manager for a commonwealth department managing a large staff base with a 26 million annual budget. I have been a businessman, purchasing manager and finally a business analyst with the department of defence.

We foolishly thought we were ideally setup from a competency point of view to analyse the whole solar market.

We needed all this background experience and more, including professional experiences to achieve a successful outcome with solar home generation.

Some additional comments to your questionnaire:

We were very happy with Solar Charge the company that installed our system.

They were not the cheapest, but we believe they were the best as regards quality of components, customer service and qualified careful installing
tradesmen.

But in many ways the acquisition process, selection of a competent cost effective solar company is the easiest part of the whole exercise.

The most difficult parts are-

When we bundled initially with a energy retailer provider, that was a pleasant exercise, 17.9 cents net per KW hour for electricity and a similar outcome for our gas needs.

But as soon as we went to solar all previously contractually agreed bets were off and our electricity charge from the grid from [all retailers seem to be a similar cost] our charge jumps to 29.9  per KW hour from 7 am until 11 pm weekdays. our off peak charge is only 11 cents per KW hour 11 pm until 7 am in the morning.

[note from Finn: this doesn’t have to be the case see here to find a retailer that won’t increase your tariff for getting solar]

So from 17.9 cents per KW hour after discounts jumping to 28 after discounts.

but in someway it gets even harder-

To get our so called smart meter recalibrated to recognise and meter our solar generation was a nightmare from an admin point of view.

I initially was told by our retailer provider that it would take 26 working days to process our paperwork through to our distributor who is responsible for reconfiguring our smart meter.

Solar Charge told us it would cost $136 dollars which they included in their quote.

Our retailer provider told us it would cost $196 and if we wanted to speed the connect up we could pay an additional $50 to get the truck to visit our suburb out of turn so to speak.

When I got rather firm [not abusive at any stage] with the retailer with finally a senior customer service person she said her company’s performance to date was poor and she would husband our paperwork [which Solar Charge had submitted in a timely manner] as quickly as was reasonable.

Which was the case exactly in fact.

The retailer got our paperwork to the distributor in 3 working days, very reasonable.

The large distributor did the reconfiguring in 3 working days [also reasonable] from their workshops and here is the good news, at no cost.

Because these smart meters in my suburb can be reconfigured from their workshops via a computer download.

No visiting truck is required we were told.

[We need to see this in actual reality if true in future bills, I have made a record of conversation regarding who I have spoken to and the undertakings given to me].

Solar Charge has without any hesitation agreed to refund our $136 but after a few weeks period that allows for any unexpected bill arrival from the distributor [they don’t totally believe this is ttrue yet].

*Our solar installation was finalised on the 5 November and our so called smart meter was recalibrated on the 23 November.

All that is reasonable, but it would certainly not have happened without an enormous persistent personal involvement from ourselves.

Speaking to a neighbour living on her own, it took her 9 months [for some months she did not entirely understand the whole process] to get her system connected to the grid from a metering  of her solar power point of view.”

Avoid this experience by getting in writing the absolute latest date at which you will have your system connected to the grid and properly metered.

Filed Under: Solar Installation Tagged With:

How Important Is Efficiency When Choosing A Solar Panel?

November 15, 2010 2014-12-12T12:13:56 by 21 Comments

I get a lot of emails from people asking “Which is the most efficient solar panel on the market?”.

Last time I checked, the awesomely awesome Sanyo HIT 195DA3 (note: now manufactured under the Panasonic brand) laid claim to the most efficient panels in production at a whopping 20.5% panel efficiency!

(And before you SunPower fans swamp me with emails – yes, I understand that this is including light coming into the back side of the panel, which is would require special mounting – see the pic below. On a typical roof, the Sunpower E20 327W will be the most efficient at 20.4% panel efficiency)

Mounting a solar panel to allow "backside irradiance"

An example of Sanyo HIT solar panel mounting to maximise efficiency.

But whilst solar panel manufacturers like SunPower and Sanyo battle it out for the “most efficient panel” gong, the question we really need to ask is: “Is the most efficient panel the best option for your roof?”.

[Read more…]

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Which Electricity Company pays the most for your solar electricity?

October 25, 2010 2017-05-03T13:51:26 by 1 Comment

Update: Feb 27 2015: Please note the date on this blog post is October 2010 – so the information is out of date.

The best way to find good electricity tariff deals for solar owners in 2015 is the surprisingly good government website:

www.energymadeeasy.gov.au

Go to that website, click on the red ‘residential’ button, enter your postcode, check the ‘offers available to solar owners’ box and follow the prompts.

A company offering very good Feed In rates ($0.12 in some areas) is “Click Energy”.

———————

 

Those nice folk at the Alternative Energy Association have just released a really useful survey.

They paid someone to go round every electricity company in Australia to find out which company will give you the best deal if you have a solar energy system on your home.

My advice: read the survey for each state and switch to the company that:

a) pays the most

and

b) has the most solar friendly terms.

For example some companies may offer a great rate per kWh, but only give you it as a credit on your bill. Others may make you fill out a zillion forms before you actually receive it.

The one thing that people can get stung on is if their electricity company forces you onto a higher “peak” rate for your electricity once your panels are installed. The survey asks about this – so read the answers carefully before deciding to switch!

The good news is that there are electricity companies out there that will give you a good rate but not force you onto a higher rate for the electricity that you do buy. You can have your cake and eat it Hooray!

The links to the survey for each state are here

Here are the questions they asked of each electricity company:

  • What is your Premium feed‐in tariff rate offered (c/kWh) ?
  • Is any excess credit paid out at the end of 12 months?
  • Is this an automatic process, or is the customer required to apply to have this paid out?
  • Is there a time limit within which the customer must apply?
  • Is the customer paid the entire value of any outstanding credit or is there a minimum credit balance a customer must exceed before being eligible to be paid?
  • Is there any fee levied for being paid out any excess credit?
  • What happens to any remaining credit not paid out?
  • Does the customer retain ownership of all outstanding Renewable Energy Certificates, GreenPower Rights and/or any other present or future environmental rights created by their system?
  • Is the premium feed‐in tariff linked to any specific retail offer(s), or is the customer free to choose from all of the retail offers and tariffs they would be eligible for if they weren’t receiving the premium feed‐in tariff?
  • By entering into a contract for your premium feed‐in tariff, are the retail service charges affected / adjusted in anyway?
  • Is the customer able to retain any existing dedicated off‐peak supply meters when converting to solar PV, small wind or any other form of micro‐ generation?
  • Is the customer eligible for dedicated off‐peak hot water / heating supply tariffs once accessing your premium feed‐in tariff?
  • Is the customer still eligible to purchase GreenPower for their electricity consumption?
  • Are all classes of customers (e.g. residential, business) eligible to receive your Premium Feed‐in Tariff offer, providing they are a qualifying customer under the relevant feed‐in tariff legislation?
Filed Under: Solar Installation Tagged With:

Daily Telegraph gets on its high horse about Solar Power and Electricity prices

October 10, 2010 2017-05-03T14:00:16 by Leave a Comment

I’ve been in Sydney for a couple of days (including a really interesting tour of Silex Solar’s impressive Solar Panel factory at Olympic Park).

I picked up the Daily Telegraph in the hotel this morning to see the front page screaming about electricity prices.

According to the paper, the only person who can bring NSW electricity prices down is the Premier: Kristina Keneally – and the Telegraph is demanding that she does something about it – or else…

Now I’m no fan of  the mob of incompetent cronies and hollowmen that has made up the NSW government for the past few years, but electricity prices are high because of massive demand and limited supply. That demand is created by the NSW public building black roofed McMansion hotboxes with 10kW air-conditioning as standard and almost no insulation or window shading – never mind double glazing.

Let’s take some responsibility for our actions and accept that if we create massive demand for something (through being hopeless at implementing simple energy efficiency measures) we shouldn’t be surprised if the price goes up.

The Telegraph’s solution to all this is for the State Government to hand out hundreds of dollars a year to people with high bills and stop encouraging people to invest in solar power by scrapping NSW’s Solar Bonus (Gross Feed In Tariff).

So let me get this right: the journos at the Telegraph think that the solution to high electricity prices is to reward the people who use the most electricity, and stop rewarding those people who choose to generate their own?

I say: just leave the market to sort itself out. High electricity prices (combined with intelligent rebates for energy efficiency) will encourage more people to be more energy efficient, which will reduce the demand for electricity and increase the supply from solar power, which can only push electricity prices down.

And don’t forget that the majority of the increase in electricity prices is to fund the building of more wires and poles to cope with “peak demand” periods. These peak demand periods are basically when the sun is at its hottest in the afternoon and everyone’s air conditioners are running full throttle. Power output from residential solar panels peaks at exactly the same time, helping to reduce peak demand. And because the solar panels are on your roof and any power exported will be used locally, they don’t need pylons and hundreds of km of power cabling to get the power to the end user.

Filed Under: Solar Policy Tagged With: ,

Solar Payback Calculators Launched

May 27, 2009 2019-12-06T15:26:37 by 8 Comments

How long will it take a solar power system to pay for itself?

What will my next bill be with solar?

How will electricity price increases affect the payback?

What about the Feed In Tariffs?

Is it a good idea to put the cost of the solar system on my mortgage?

What about one of those “Green Loans”?

These are questions I get asked every day. To help you answer them we are proud to announce that we have just released three solar power calculators:

1) Solar Savings calculator : How many $ will you save and what’s the payback if you pay 100% upfront for your solar system? This calculator wil tell you.

2)Solar Home Loans: Will you still save money if you add the cost to your home loan? What will you pay extra (or save) per month compared to not having solar? This calculator wil tell you.

3)Paying for Solar with a Personal Loan? Is it a good option financially? This calculator wil tell you.

Filed Under: Economics Of Solar Tagged With:
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