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Solargain Frequently Asked Questions - Solar Electricity Systems


 

 

 

What does PV mean?

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PV is a short term for Photovoltaic. This is a breakthrough technology where solar cells convert sunlight into electricity.

 

What are the main types of solar panels in use today?

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The three main types of solar panel technology are monocrystalline, polycrystalline and thin film.
Currently, the most efficient solar technology is monocrystalline. The monocrystalline variety is a higher efficiency module and requires less space. Solargain systems are mostly all monocrystalline depending on the conditions.
Detailed information about the types of solar technology is listed below:

Mono crystalline (monocrystalline c-Si)
Mono Panel
A single crystal or monocrystalline solid is a material in which the crystal lattice of the entire sample is continuous and unbroken to the edges of the sample, with no grain boundaries. The absence of the defects associated with grain boundaries can give monocrystals unique properties, particularly mechanical, optical and electrical. This structure is what makes certain types of gems precious.

Monocrystalline panels are proven technology that has been in use for over 50 years. They have the highest efficiency of up to 12% - 19.5% (the record stands at 25% efficiency in laboratory conditions). This means less panels can be used to attain an output goal.

Poly crystalline (polycrystalline c-Si)
Poly Panel

Polycrystalline materials are solids that are composed of many crystallites of varying size and orientation. The variation in direction can be random. Fibre texture is an example of the latter.
Almost all common metals, and many ceramics are polycrystalline.

A photo of electrical steel (coating removed) showing polycrystalline structure (Source Wikipedia)

 

This technology is comparable the mono crystalline variety, but for the structure of the materials at a molecular level. This makes the efficiency slightly lower at approximately 11-13%. This technology is now quite dated and the use of monocrystalline is preferred from a performance perspective.


Thin Film

The most common varieties of Thin Film panels are:

• Cadmium Telluride Thin-Film panels (CdTe)
• Copper Indium Gallium Selenide Thin-Film panels (CIGS)
• Amorphous silicon Thin-Film panels(a-Si)


Thin film (Rigid)

In rigid thin film modules, the cell and the module are manufactured in the same production line.
The cell is created on a glass substrate or superstrate, and the electrical connections are created in situ, a so called "monolithic integration". The substrate or superstrate is laminated with an encapsulant to a front or back sheet, usually another sheet of glass. The typically has a sunlight conversion rate of 6-12% and tends to perform better in lower light zones such as northern Europe.


Thin film (Flexible)
Flexible thin film cells and modules are created on the same production line by depositing the photoactive layer and other necessary layers on a flexible substrate. The typically has a sunlight conversion rate of 6-12%. The University of Michigan's solar car that won the North American Solar Challenge in July 2008 used IMM thin-film flexible solar cells.

 


What affects the energy output of my solar system?

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There are many aspects that affect the output of your solar system.

A solar power system is not always going to give the same power output.
The following information outlines some of the factors:
  • Orientation of the solar panels (north facing being ideal)
  • Efficiency of the Inverter
  • Efficiency of the modules
  • The season and weather, time of day
  • Temperature of the panels
  • Shading, dirt or dust
  • Your geographical location (refer to the CEC table refer: How much power do solar panels they generate?)


Warranties and Guarantee

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Solar PV panels generally come with a performance warranty that can last up to 25 years. Additionally, a manufacturing warranty will generally span 5-10 years.
As all system are not the same, please call Solargain on 1300 73 93 55 for information about the warranty of the system you desire.

Australian Standards
All Solargain systems meet the required Australian standards.

The Clean Energy Council has a frequently updated list of all solar panel and inverter models that meet Australian standards. To see the list, please http://www.solaraccreditation.com.au/acccec/approvedproducts.html.
Solar PV systems must also comply with The CEC Design and Installation Guidelines.

 

What are the optimum conditions for a solar system to operate?

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The maximum output is given with a high light intensity and the biggest surface area of solar cell panels, and with no tilt in relation to the light source.

Heat can also affect the energy output of your system. As temperature of your solar panels rise, it will lower the overall energy output. An ideal situation would be that the panels would track and remain perpendicular to the light source. This can however be expensive so the solution is to have your panels facing as north as possible north. The ideal tilt of your panels should be 30 degrees, as specified by the Australian Clean Energy Council. If your roof tilt is inadequate for optimum performance, Solargain is capable of engineering a mounting system that is perfect for your situation.

 

How much sunlight should the panels receive

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The amount of energy in sunlight that a solar PV panel receives over a day is expressed in peak sun hours. As the amount of energy generated by a panel is directly proportional to the amount of energy it receives from sunlight, it is important to install panels so they receive maximum sunlight.

Your Solargain solar energy specialist can calculate the amount of energy generated by the solar PV panel from the peak sun hours available. Peak sun hours vary throughout the year.

Yield estimates can be obtained from Solargain during the quotation process.

How much energy does a Solargain Energy System generate?

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The output of a solar PV system depends on its size. The most common household systems are either 1.5 kW to 3kW systems, although some property owners have installed systems of up to 10 kilowatts. The table below shows the average daily production of some common grid-connected systems throughout Australia.


Average Daily Production

City

1 kW system

1.5 kW system

2.0 kW system

3.0 kW system

4.0 kW system

Adelaide

4.2 kWh

6.3 kWh

8.4 kWh

12.6 kWh

16.8 kWh

Alice Springs

5.0 kWh

7.5 kWh

10.0 kWh

15.0 kWh

20.0 kWh

Brisbane

4.2 kWh

6.3 kWh

8.4 kWh

12.6 kWh

16.8 kWh

Cairns

4.2 kWh

6.3 kWh

8.4 kWh

12.6 kWh

16.8 kWh

Canberra

4.3 kWh

6.45 kWh

8.6 kWh

12.9 kWh

17.2 kWh

Darwin

4.4 kWh

6.6 kWh

8.8 kWh

13.2 kWh

17.6 kWh

Hobart

3.5 kWh

5.25 kWh

7.0 kWh

10.5 kWh

14.0 kWh

Melbourne

3.6 kWh

5.4 kWh

7.2 kWh

10.8 kWh

14.4 kWh

Perth

4.4 kWh

6.6 kWh

8.8 kWh

13.2 kWh

17.6 kWh

Sydney

3.9 kWh

5.85 kWh

7.8 kWh

11.7 kWh

15.6 kWh

Data Source: PV-GC spreadsheet based on the CEC GC Design Guidelines The rated output is that achieved in perfect laboratory conditions. The CEC design summary software takes these deratings into account when predicting average for any given system.

A typical Australian house consumes around 18 kilowatt hours (kWh) per day so a 1-2kW system displaces an average of 25-40% of your average electricity bill. Solar panels produce more energy in summer than they do in winter.

Does shading affect the performance of the panels?

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PV panels should ideally be in full sun from at least 9am to 3pm.
Solar panels obviously produce less power when they are shaded and should ideally be situated where there will never be any shadows on them.
There may be situations where this cannot be avoided, and the effects of partial shading should be considered.
A shadow falling on a small part of a panel can have a surprisingly large effect on output. Not only will the cells that are shaded be producing less power, but as the cells within a panel are normally all wired in series, the shaded cells affect the current flow of the whole panel.
If the affected panel is wired in series (in a string) with other panels, then the output of all those panels will be affected by the partial shading of one panel.  Mounting solar panels away from trees or man-made obstacles like chimneys or taller buildings is a must for proper operation.

 

What is an inverter? What sort should I buy?

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Solar PV panels produce low voltage DC electricity. The inverter converts this into the AC electricity needed to supply power for standard appliances.
The efficiency of an inverter is measured by how well it converts the DC electricity into AC electricity. This usually ranges from 95% to 97.5% for most models. Check the inverter’s specifications before you purchase. Inverters are sized according to the power (watts) they can supply.

Temperature
The amount of electricity a solar PV panel can generate is reduced as temperatures increase. Solar panels operate best at ambient temperatures up to 25°C. However, if the ambient temperature is higher, the panel’s output declines.

 

Is hail likely to damage my panels?

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Not in any normal circumstance. The panels are tested to withstand hail. A hail test is conducted with a 25 mm diameter ice ball at 23 m/s (82km/h), directed at 11 impact locations.

How long will the process take to have my system installed and producing energy?

This will in particular depend on your meter change and grid connection which is done by your energy provider. This requirements and turn-around can change depending on the Australian State you are in.

Solargain can assist you with your application, but please note that a meter change is a component of the installation that is inevitably between you and your energy provider. This process can take up to two months before your new meter is installed by your energy provider and you start to receive any applicable feed in tariff.
The installation of the physical solar unit process itself can take between three hours up to one day, depending on your system size, location, safety factors and weather conditions.
You will be required to be present for part of the installation to sign relevant paperwork.

 

Will it cost money to change my meter over?

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Yes. The Solargain sale price excludes the meter change and grid connection. This cost varies from state to state depending on the energy provider and type of meter.

 

Who arranges for the electrical inspector (currently VIC only) /meter change?

This is handled by your Solargain installer and is included in the sale price of your system.

 

When will my system be turned on?

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Victoria: As soon as the system is inspected and the meter changed and/ or reprogrammed and connected to the grid.
WA and all others: Your system will function after the completion of the installation.

What happens if the grid power goes out?

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The system will automatically shut down with a power outage and switch back on when power is restored. If your system does not switch on when the power is restored, please do not hesitate to contact the Solargain Service Department on 1300 73 93 55.


My system has been installed. What do I need to do now?

Solargain will provide you with the relevant system manuals. We suggest reading your manual to familiarize yourself with the system. Solargain also recommends continuing to monitor your system progress, and report back if you have any issues or questions.
Solargain also provide a service option to maintain your panels. Please enquire on 1300 73 93 55 if you are interested.


Who can I talk to if I need more information, or if I have a problem?

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Call Solargain on 1300 73 93 55.

 

Should I keep and trade STCs myself?

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No, STC’s are traded in commercial quantities and one off small trades are very difficult to find a purchaser for. If you could find a buyer there is also the complexity of registering the certificates and waiting for payment which makes the process cost and time prohibitive.


What government schemes are in place to lower the cost of purchasing a solar PV system?

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There are currently four types of financial assistance offered for solar PV systems in Australia:
• Renewable Energy Certificates
• Solar Credits
• Rebates (applications for rebates must have been received by June 2009)
• Feed-in tariffs

Renewable Energy Certificates
Renewable Energy Certificates (RECs) are an electronic form of currency created by the Renewable Energy (Electricity) Act 2000 (also known as the RET scheme). One REC is equivalent to one megawatt hour of electricity generated by your solar PV power system. The price of RECs changes according to market conditions. As an owner of a solar PV power system, you can register, sell, trade or surrender RECs for systems up to 100kW. There are two ways you can be paid for your RECs:
1. Assign your RECs when you purchase your solar PV system to a registered agent in exchange for a financial benefit which may be in the form of a delayed cash payment or upfront discount on your solar PV panel system (most consumers take this option); or
2. Create the RECs yourself by finding a buyer and then selling and transferring them in the REC Registry.

For a list of registered agents, contact the Office of the Renewable Energy Regulator3.
RECs may be created for solar PV systems in batches of either one, five or 15 year deeming periods. At the beginning of each successive one or five year deeming period, the Regulator (from the Office of the Renewable Energy Regulator) must be satisfied that your solar PV system is still installed and is likely to remain functional for the next deeming period. In order to claim RECs for the full 15 year deeming period upfront – which is the most common option - your designer/installer must be accredited by the Clean Energy Council. More information is available in the RET process for Owners of Small Generation Units (SGUs) guide published by the Office of the Renewable Energy Regulator click here4. The level of subsidy will depend on a number of factors, including the location (also known as the zone) of the solar PV system, the size of the system and the price of RECs at the time the system was installed. Australia is divided up into various zones based on how much renewable energy can be generated by a solar panel in a given area. So the same sized system installed in Melbourne or Hobart (Zone 4) receives fewer RECs than those installed in Sydney (Zone 3) or Darwin (Zone 2) because Melbourne and Hobart have less sunshine so less solar energy is produced. The table below shows the level of financial support available from RECs on solar PV systems in the major capital cities of Australia.


Renewable Energy Certificates – Level of financial support

City

Zone

Rating

System Size

Deeming Period

Total REC Entitlement

Total Subsidy

Adelaide

3

1.382

x 1.5 kW

x 15 (years)=

31

$1240 (31 RECs x $40)

Brisbane

3

1.382

x 1.5 kW

x 15 (years)=

31

$1240 (31 RECs x $40)

Canberra

3

1.382

x 1.5 kW

x 15 (years)=

31

$1240 (31 RECs x $40)

Darwin

2

1.536

x 1.5 kW

x 15 (years)=

34

$1360 (34 RECs x $40)

Hobart

4

1.185

x 1.5 kW

x 15 (years)=

26

$1040 (26 RECs x $40)

Melbourne

4

1.185

x 1.5 kW

x 15 (years)=

26

$1040 (26 RECs x $40)

Perth

3

1.382

x 1.5 kW

x 15 (years)=

31

$1240 (31 RECs x $40)

Sydney

3

1.382

x 1.5 kW

x 15 (years)=

31

$1240 (31 RECs x $40)

Zone Rating x Rated Power Output (1.5kW) x Deeming Period (15 years) = Total REC Entitlement
Figures based on a $40 market rate for RECs
For more information, contact the Office of the Renewable Energy Regulator 5.

Solar Credits
The Solar Credits scheme6 for solar PV systems is based on the REC scheme, but multiplies by five the number of RECs able to be created for your solar PV system. These extra credits only apply to the first 1.5kW of system capacity. So if your system is larger than 1.5kW, you will receive Solar Credits plus an additional REC for every one megawatt hour of electricity able to be generated by your solar PV system.
The table below shows the level of financial support available from Solar Credits on solar PV systems in the major capital cities of Australia:


1.5 kW system under the Solar Credit Scheme

City

Number of Solar Credits Due

Adelaide

$3,720 (93 RECs x $40)

Brisbane

$3,720 (93 RECs x $40)

Canberra

$3,720 (93 RECs x $40)

Darwin

$4,120 (103 RECs x $40)

Hobart

$3,160 (79 RECs x $40)

Melbourne

$3,160 (79 RECs x $40)

Perth

$3,720 (93 RECs x $40)

Sydney

$3,720 (93 RECs x $40)

Figures based on a $40 market rate for RECs

The government has set the level of the Solar Credits multiplier as stated in the table below. For example, solar PV systems installed during 9 June 2009 to 30 June 2010 will receive REC’s multiplied by up to five times, while solar PV systems installed during 1 July 2013 to 30 June 2014 will receive REC’s multiplied by up to two times.


Multiplier for certificates for small generation units

Installation period

Number of multipliers

9 June 2009 to 30 June 2010

5

1 July 2010 to 30 June 2011

5

1 July 2011 to 30 June 2012

3

1 July 2012 to 30 June 2013

2

1 July 2013 to 30 June 2014

1

1 July 2014 to 30 June 2015

0

The same sized system installed in Melbourne or Hobart receives fewer Solar Credits because these areas have less sunshine so less solar energy is produced. In June 2010, the Federal Government announced amendments to the RET scheme. As part of these changes, the scheme will be spit into two parts:
1. the Small-scale Renewable Energy Scheme (SRES) which covers small-scale technologies such as solar panels and solar hot water systems
2. the Large-scale Renewable Energy Target (LRET) which covers large-scale renewable energy projects like wind farms, commercial solar and geothermal.

The changes to the Act gave the Government the ability to increase the kW capacity limit of the solar credit multiplier to up to 3kW. However they have not acted on this yet. Additionally, the changes under the SRES provides a price of $40 (less brokerage fees) per small-scale technology REC effective from 1 January 2011. The government is able to reduce the $40 price and the Solar Credits multiplier by regulation. However in doing this it must obtain, and take into consideration, independent advice. Any changes made will not come into force until the following 1 April.

In May 2011, the Federal Government announced a reduction of the solar credits multiplier from a multiple of 4 to a multiple of 3 for installations from 1 July 2011. The multiplier will then be reduced to 2 on 1 July 2012 and then to 1 on 1 July 2013.

For more information, contact the Office of the Renewable Energy Regulator http://www.orer.gov.au

Feed-in tariffs
Several states have introduced, or are in the process of introducing, feed-in tariffs. A feed-in tariff pays you for electricity generated by your solar PV system.

Under a net feed-in tariff, a premium is paid for any solar energy that goes back into the grid from your house. So if you have surplus energy generated by your solar panels, you get paid for it; and if you use all of the energy you generate it will be offset against your normal electricity bill. Under a gross feed-in tariff you get paid for every unit of electricity generated by your solar panels, regardless of whether it goes into the grid or is used by your household. You need to apply to your electricity retailer to receive the feed-in tariff. When signing an agreement with your electricity retailer, you need to be informed. In particular, you should check with your electricity retailer about any tariff changes that will occur as a result of installing solar and carefully weigh up the advantages and disadvantages before making a decision. This should be considered before you install tariff changes. Important questions to ask about your feed-in tariff agreement include:

• What price will they pay you for your electricity (in cents per kWh)?
• What is the cost of the electricity you purchase from them (in cents per kWh)?
• Will you lose your lower off-peak rates by moving onto a higher Time of Use (TOU) tariff?
• Have you been signed onto a premium feed-in tariff or a standard feed-in tariff? If your electricity retailer signs you up to a standard feed-in tariff agreement you will receive less money for the electricity you feed back into the grid.
• What will be the form of payment for electricity you produce? It is likely you will receive the feed-in tariffs you earn by default as a credit on your electricity bill rather than cash.
• What will be the form of payment for surplus electricity you produce? Will it be cash, cheque or EFT on request?


Other important questions to ask when signing an agreement with your electricity retailer are discussed in further detail later in this document. The table below shows the feed-in tariffs introduced, or in the process of being introduced, in the various states, and the savings that could be made on a 1.5 kW system. These savings are an estimate only and may vary depending on the size of your solar PV system, the products used, location of the system and how much electricity your household consumes. The actual savings you make may also vary depending on the electricity retailer you are with. For a more accurate estimate, your accredited designer/installer will be able to calculate your potential savings as part of their load analysis.

Location

Feed-in tariff

Based on 25% of electricity being fed into the grid

Based on 50% of electricity being fed into the grid

Based on 75% of electricity being fed into the grid

 

 

Daily savings

 

Daily savings

Annual savings

Daily savings

Annual savings

Melbourne

Net export

60c per kWh

$1.70

$621

$2.21

$808

$2.73

$995

Melbourne

Net export

25c per kWh

$1.23

$448

$1.27

$463

$1.31

$478

Adelaide

Net export

44c per kWh

$1.73

$632

$2.08

$759

$2.43

$885

Adelaide

Net export

16c per kWh

$1.29

$471

$1.20

$437

$1.10

$402

Brisbane

Net export

44c per kWh

$1.64

$598

$2.02

$736

$2.39

$874

Perth*

Net 1:0:3

7c per kWh

$1.11

$404

$0.89

$325

$0.68

$247

Canberra

Net 1:1

20c per kWh

$1.29

$471

$1.29

$471

$1.29

$471

Darwin

Net 1:1

19c per kWh

$1.25

$458

$1.25

$458

$1.25

$458

Hobart

Net 1:1

20c per kWh

$1.05

$383

$1.05

$383

$1.05

$383

Sydney* 0c NET export rate

Net 1:0:2

0c per kWh

$0.97

$352

$0.64

$235

$2.95

$117

Sydney* 5c NET export rate

Net 1:0:3

5c per kWh

$1.04

$379

$0.79

$288

$1.20

$198

* The SA feed-in tariff scheme will be closed to new applicants for the 44 c/kWh feed-in tariff category on 30 September 2011. From 1 October 2011 new entrants to the scheme between this date and 1 October 2013 will be able to receive a 16 c/kWh feed-in tariff to 30 September 2016 **Applications to the ACT feed-in tariff have been placed on hold. No new applications to the scheme will be considered from midnight 31 May 2011 ^ Applications to the NSW feed-in tariff have been placed on hold. No new applications to the scheme will be considered from midnight 28 April 2011 #The WA feed-in tariff scheme was suspended on 1 August 2011, after reaching its quota. No new applications are being taken. NB: This information is intended as a guide only and was current as at 3 August 2011. Consumers should speak directly with electricity retailers about their terms and conditions before entering into any contract
For more information on feed-in tariffs contact your relevant State Government Department:


State Government Departments

State

Department

Contact

ACT

Department of Environment, Climate Change, Energy & Water

13 22 81

NSW

Department of Industry & Investment

1300 136 888

NT

Department of the Chief Minister

08 8999 5511

QLD

Office of Clean Energy

13 25 23

SA

Sustainability & Climate Change

08 8204 2999

TAS

Department of Infrastructure, Energy & Resources

1300 135 513

VIC

Department of Primary Industries

136 186

WA

Office of Energy

08 9420 5600



Can you explain what STC / RECs is?

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Basically, an STC is a form of renewable energy currency -  a kind of carbon credit that represents a unit of renewable energy. One STC is equivalent to one megawatt hour of electricity generation over a 15 year period.

 

How many STCs will I receive?

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In most circumstances, Solargain will receive the STCs and thereby reduce the overall cost of your solar system. Solargain prices all our systems with this in mind.

The number of STCs you are awarded depends on how many megawatts of power your renewable energy system is expected to produce or offset over this 15 year period. For example, a 1 kilowatt (kW) solar power system installed in Melbourne is expected to generate 18 megawatts (mW) of electricity over a 15 year period. Therefore, 18 STCs are awarded by installing a 1kW system in Melbourne.
Thanks to the Solar Credits Scheme, most households and businesses are eligible for a multiplied number STC’s for the first 1.5kW of solar power they install.

 

How much are STCs worth?

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STC’s are a tradable commodity similar to a share. Just like shares that you would trade on the stock exchange, the price of STC’s fluctuate depending on supply and demand.

 

Why would anyone buy STCs?

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Businesses buy STC’s from the open market as a form of carbon offset. In general, Australian legislation requires businesses that produce carbon (e.g. Energy Providers) to offset this by purchasing STC certificates.

 

How do STC’s reduce the cost of a system?

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The STC's you receive with your system are not worth anything to you, unless you choose to sell them - and trading STC’s is a tricky and convoluted business. That's why solar households generally choose to sell their STC’s to their solar installer. Solargain will then give you a discount off the price of your system in exchange for these STC’s. How much of a discount you get from handing over your STCs depends on the current market trading value of STC’s.

 

Why would I keep, or retire my STCs?

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Solargain recommend that the most advantageous option is to surrender the full amount of STC’s at the point of purchase to get the full discount on the system.

You are however entitled to keep your STC’s if you are willing to pay the full amount of the Solar System. You can then hold onto your STCs and see if the value goes up in the future (note: the value can and has gone down in the past). The choice is yours.
Please note: small amounts of STC’s can be difficult to sell in the open marked. You also need to be a registered STC trader.

At present, there is a federal Australian national initiative that has commissioned an STC clearing house for people who wish to put their STC’s up for trade at a capped price of $40. There are issues with this as the open market usually sells for less and you may again find it difficult to sell them. Again, the choice is yours.

 

What does the design and specification of my Solar PV System involve?

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Accredited Designers / Installers to be eligible for government rebates, the designer and installer of your solar PV system must be accredited by the Clean Energy Council.

All Solargain design and Installation teams are fully accredited.

The Clean Energy Council’s accreditation scheme ensures that accredited designers and installers of solar PV power systems:
• have undergone the necessary professional training
• follow industry best practice
• adhere to Australian standards
• routinely update their skills and product knowledge.

A Solargain accredited designer/installer will provide you with a solar PV system design and specification.
This will include things such as:
• establishing your electrical loads over an average day using a load analysis
• determining the type of panels
• determining the size of your solar PV system
• deciding the type of inverter
• establishing the location of solar panels in relation to angles, available sunlight, shading and temperature.

 

Environmental Benefit

What is my carbon saving?

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A typical 3kW Solar Energy System will offset the following over a 25-year period:
  • 180,000 lbs of CO2 (greenhouse gas)
  • 600 lbs of NOx (smog)
  • 500 lbs of SO2 (acid rain)
  • 300,000 miles driven in an average car
  • (12,000 miles a year)
  • It's like planting 1.5 acres of Trees
  • It will prevent over 90,000 lbs of Coal from being burned!

 

What is the energy payback time for Solargain Energy System?

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There are many factors that will determine the payback period of a solar system. Some of the main  factors are listed below.

  • Cost of the System
  • Size of the System
  • System quality and performance
  • Your own energy consumption
  • The current Gov. Feed-In tariff that you are on
  • Annual increases in the cost of energy

 

Why is my inverter not functioning at night?

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In the absence of an appropriate amount of sunlight to keep the inverter producing power which most days is around dusk the system will power down and wait until an appropriate amount of light returns the next day, then it will power up again and continue producing.

 

Why does my inverter showing a fault description?

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Occasionally the grid experience irregular voltage spikes. Your inverter has safety mechanism built in to shut down your inverter under this condition.

We recommend monitoring your inverter over night as they generally auto reset. If this problem persists, please feel free to use the fault request form www.solargain.com.au/report-fault or call our service department to arrange an onsite visit or inspection on 1300 73 93 55.