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Can I go off-grid Solar System with Tesla Powerwall?

Off-grid Tesla Powerwall is a game-changer in the entire Australian market. Since its launch, Tesla Powerwall has been a revolution. The off-grid Tesla Powerwall is a battery-based system and doesn’t need a utility grid to power your houses. With Powerwall, you can harness and store the abundant sun’s energy and change your energy consumption pattern.

Off-grid systems are those systems that have solar panels but are not connected to the utility grid. However, they have batteries to store the solar power generated by the system. Off-grid solar systems should have a high power capacity battery to support high surge draw. In an off-grid solar system, you may require an extra battery to store the power. These extra batteries are useful at night and in some extreme weather events. Maintenance-free lithium batteries are always desirable in off-grid systems.

Just like any other solar battery in Australia, Tesla Powerwall can be customised to design an energy storage system for the best performance. This way, going solar can increase savings. Let’s learn more about Tesla’s Powerwall.

Benefits of Tesla Powerwall

Tesla Powerwall is arguably the most popular solar battery in Australia for homes and small businesses. It uses a lithium-ion battery, a type of rechargeable battery that helps to achieve your energy goals. We have listed some of the benefits of Tesla Powerwall below –

Self-Powered Home:  With all the energy stored in Powerwall, power your home after the sun sets and be less reliant on the grid.Backup Power: Tesla Powerwall solar battery can store energy to provide backup power as and when you need it.Energy Savings:  Connect up to 10 Powerwall units to maximise your savings by using stored and off-peak energyMobile App for Tesla Powerwall: The Tesla app is designed to monitor day-to-day operations and understand how energy is used.Home Energy Control: Tesla app helps you to understand the energy consumption pattern and control home energy by changing the settings.10 Year Warranty:  The standard Tesla Powerwall warranty is 10 years at 70% capacity. When Powerwall is used for other applications beyond solar self-consumption and backup, the warranty ends when 37,800kWh energy is provided.Ongoing support:  Tesla support team offers ongoing support to ensure that the Powerwall operates seamlessly.

The most attractive to invest in

It is worth investing in Tesla Powerwall. With added features, Powerwall will be able to power a home for 12 hours. As Powerwall is AC coupled, it is compatible with typical inverters installed on a home energy system.

Tesla’s rechargeable lithium-ion battery with a liquid thermal controlsystem aids to store energy from solar or from the grid, making it available on demand. In most cases, Powerwall can power your home during the night or in the event of a power outage.

Powerwall operates in different modes and can be seamlessly monitored via the Tesla app to save more money on energy bills. However, you will have to make sure it generates enough energy.

Tesla Powerwall and solar on-grid – In this mode, Powerwall is integrated with your existing solar system and uses an electric grid to charge and store excess energy in a solar battery.Tesla Powerwall off-gird – In an off-grid scenario, your home is disconnected from your utility grid and help you to be independent of grid energy.Tesla Powerwall without solar system –Tesla Powerwall and Tesla Battery without Solar will get charged directly from the grid when Powerwall is installed without solar.

On-Grid Solar System with Tesla Powerwall

Install Powerwall with your existing solar to produce more electricity.  This means, the Powerwall is installed between the utility meter and the transfer switch and can charge from solar while the grid is operational. The state-of-the-art battery system intelligently stores extra solar power to power your home or a car. It automatically detects the outage and disconnects from the grid, and utilizes stored low-cost energy to restore power to your home quickly.

Off-Grid Solar System with Tesla Powerwall

In off-grid Tesla Powerwall operation mode, the Powerwall is disconnected from the utility grid. The energy is stored in a solar battery, which can be used later to power your home or appliances as you need.  Time-based control and backup power modes help to maximize your energy savings through smart charging and discharging of your Powerwall. Solar plus battery system is beneficial in the areas where their utility does not operate continuously.

Charging the Powerwall directly from the grid without solar system

Without a solar system, one would be able to use a Powerwall. Here, Powerwall is directly connected to the grid to protect homes against power outages. Powerwall uses grid energy for charging and stores energy in a solar battery. It reserves 100% of energy for backup at all times.

Whether it is humidity or rain, Powerwall works efficiently. Each Powerwall’s capability is to offer 13.5kWh of usable energy and can be stacked in a chain to increase energy usage. Interested to reduce electricity bills by going on-grid or off-grid? Get an instant quote for Tesla Powerwall installation in WA?

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5 Features of Tesla Powerwall that influence customers

Do you know Tesla Powerwall features will help to accomplish your energy goals? Tesla Powerwall offers powerful features to power up your home efficiently using stored energy.

Basically, solar energy is generated when sunlight hits solar cells on solar panels. These solar panels absorb photons and in doing so, an electric current is initiated. As solar energy flows into your home, you can use this energy to power your appliances and for other purposes. When the sun goes down, solar panels will no more produce electricity and don’t power your home.

To overcome this situation, Tesla has built a Tesla Powerwall to store the sun’s excess energy during peak hours. It is a leading solar battery in Australia with a larger storage capacity. Once the Powerwall is fully charged, it provides electricity to your home during power outages or when the sun is not producing energy. Why not integrate Powerwall with your solar power system to maximize solar output power and savings?

Tesla Powerwall installation WA would be a great solution for larger or smaller homes and businesses. Here are the top five features of a Tesla Powerwall that you should know to understand its performance.

Its small, compact, and sleek design

Tesla Powerwall flaunts a compact and minimalist design that is perfect for all homes in Australia. It is a simple power backup system for a house. It is recommended to combine Powerwall with a solar system to give you the freedom to power up whatever you need. As Tesla Powerwall is water-resistant and tough for all weather conditions, it can be installed outside a shed or garage. The size of a Powerwall is 45.3×29.6×5.75in and has a storage capacity of 13.5kWh. Each Powerwall can deliver up to 21amps. However, if you need more power, more Powerwalls can be stacked together for 24/7 backup protection.

You can manage and monitor it via the Tesla app

Download the Tesla app to monitor your home’s energy production and consumption on a day-to-day basis. Along with this, you can get ample information on your system’s performance in real-time and change settings as you need. Some of the features of the Tesla app includes –

Monitor energy consumption and control your system from anywhere. The app displays the real-time power flow using two screens>The ‘energy’ screen – Know at what time your solar system starts producing daily, analyse past data of production and consumption. Also, view your monthly energy usage.The ‘impact’ screen offers personalised insights on solar usage, power outage, home’s energy usage.Powerwall can be operated in two modes – With Solar and Without Solar. Tesla app allows you to directly monitor these modes of operation by changing the settings on the app.Customise and control your Powerwall according to your energy preferences. With different control modes, you can change the way your Powerwall charges and discharges.Powerwall always provides backup protection to your home. Adjust your backup reserve based on your energy usage. Do not set Backup Reserve to 100%, instead set it to 20% to save the energy allocated to the Powerwall.

Ten-year warranty and no ongoing maintenance costs

The Tesla Powerwall warranty is 10 years at 70% capacity with no ongoing maintenance costs. However, solar panels are guaranteed by our manufacturer. All equipment from Tesla is backed by a manufacturer’s warranty.

They can integrate with your new or existing solar system

Tesla Power installation in WA has gained much popularity over the years. Another prominent aspect of Tesla Powerwall is that the batteries are installed to the electrical (AC) network of your home. This means that it can be easily integrated into your existing or new solar system.

Generally, solar panels produce DC power and home appliances use AC power. This is where inverters and rectifiers are used for the smooth flow of power. The Powerwall has both inverter and rectifier to convert electricity between AC and DC. If solar panels are not producing energy, the Powerwall can charge from the grid directly. Furthermore, the time taken to install Tesla Powerwall in a residential setting is about 4-6hours. If you need multiple Powerwalls to be installed in stacked or parallel for excellent performance, the installation time would be longer.

Excess Power will charge up your Tesla Powerwall

One of the most commonly asked questions is will Tesla Powerwall provide full home backup. The answer is yes, your solar system generates solar power for powering your home. The additional solar power generated during the day will charge up your Tesla Powerwall. This energy is stored until the home needs it.

Meanwhile, businesses like Walmart, Amazon, and Google are testing Tesla’s batteries as a way to reduce energy costs. Powerwall provides seamless backup power for operations and data centres in companies when the utility grid is offline. It’s a powerful duo of energy sources with enormous potential to reduce your electricity bill.

Can I add Powerwall later? Yes. Tesla Powerwall can be easily retrofitted to any existing solar system. Now, hopefully, you know more about Tesla Powerwall. If you would like to know how much it would cost to install, reach out to an expert today!

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3kW Solar Panel Systems: Pricing, Output, and Returns

How much does a 3kW solar system cost in Australia, and how much energy can you expect it to produce? This article takes a look a these questions, as well as returns and payback periods for 3kW solar systems.

How many panels & how much roof space for 3kW of solar panels?

As residential solar panels a generally between 330 and 400W these days, a 3kW (3,000W) solar sytem will require between about 7-10 solar panels. A typical solar panel is around 1m x 1.7m, therefore a 3kW system will require about 12-17 m2 of roof space, depending on the wattage of the panels. You can explore how many panels will fit on your roof using satellite imagery via Solar Choice’s quote comparison platform.

As per the top image, most residential roof spaces will have sufficient room for a 3kW solar system.

How much does a 3kW solar system cost?

Solar Choice tracks the price of solar power systems in Australia through our network and database of over 200 solar installers. We publish average prices monthly through the Solar Choice Price Index which you can refer to at any point. The latest average price for a fully installed 3kW solar system (including the STC rebate and GST) is shown below:

verage Price of 3kW Solar System by Australian City

3kWAll$3,980Adelaide, SA$3,360Brisbane, QLD$3,940Canberra, ACT$3,560Darwin, NT$5,810Hobart, TAS$4,880Melbourne, VIC$3,720Sydney, NSW$3,690Perth, WA$2,870

There are many factors that will influence the price you will be quoted. To give you an idea of some of the main things to look out for:

The quality of products used in your system – be wary of quotes that look too cheapDouble story houses require additional equipment to get installers and the solar panels up to the roofTile or concrete roofs are more expensive as different mounting systems are required

History of prices for 3kW solar systems in Australia.

Taking a historical view of the Solar Choice Price Index we can see that prices more than halved in the last 8 years.

3kW solar system price history graph

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25%Is MobileAre you looking for residential or commercial solar solutions?ResidentialCommercialBusiness NameWhich quotes would you like to compare?Solar EnergySolar Energy and Battery StorageBattery Storage OnlyDo you know what size system you would like to install?1kW to 4kW5kW to 7kW8kW and AboveNot sureDo you know what size system you would like to install?Uncertain1-5kWh6-10kWh11-15kWh16-20kWhDo you know what size system you would like to install?Under 30kw30 to 100kW100 to 1MWOver 1MWNot sureWhen do you want to make a decision?Now1 – 3 MonthsWithin 12 MonthsWhat stage are you at with your investigations?Just getting startedAlready done some research into solarReceived Quotes AlreadyWhat is the address of the proposed installation?This information is used to identify your roof and the local pre-vetted installers to include in your online quote comparison.

Power output for a typical 3kW solar system

How much solar energy will a 3kW solar system produce? That depends on a number of situational factors such as location, orientation & tilt of the panels, the presence of shading and the overall efficiency of the components in the system.

It’s convenient to summarise solar system output in a single figure – namely, kilowatt-hours per day (kWh/day) as in the below table. In reality there will be a significant difference in the sunlight a solar panel receives during winter months and summer months. In most cities in Australia a solar system will on average produce over twice as much energy in January than in July.

The table below provides some rough figures on average daily outputs from 3kW solar systems in a handful of Australia’s capital cities (keep in mind that figures will be higher in summer and lower in winter). All situations assume the solar panels are mounted with a north-facing aspect with a tilt equal to the latitude of the city and an overall system efficiency of 80%. (Data source: Bureau of Meteorology.)

Average 3kW solar system energy yieldsAdelaide10.9 kWh per dayBrisbane11.6 kWh per dayCanberra11.5 kWh per dayDarwin14.2 kWh per dayHobart9.2 kWh per dayMelbourne10 kWh per dayPerth12.8 kWh per daySydney10.9 kWh per day

Getting the most from your system by maximising ‘solar self-consumption’

These days, the best way to save money with solar is to use the energy yourself (‘self-consumption‘). For every unit (kWh) of solar energy that you use directly, you reduce the amount of energy that you have to purchase from the grid – at rates around 25c/kWh in most of Australia. In contrast, if you let your solar energy go into the grid, you will currently earn about 5-12c/kWh. As a result, the percentage of energy that is ‘self-consumed’ will affect the systems overall financial return.

By running appliances during the day when your solar panels are generating power, you automatically consume the solar energy instead of grid electricity; only the excess solar energy is ‘exported’ to the grid. In general, Solar Choice would recommend selecting a system size where you expect to self-consume a minimum of 30% to make sure you the system can pay for itself within the first 3-5 years.

Home energy management systems, hot water diverters and timers are some popular strategies for increasing solar self-consumption. Home battery storage is also increasingly in demand, but high out-of-pocket costs for battery systems make this approach less attractive for the time being (although battery system prices are expected to come down dramatically in the coming years).

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Typical financial return and payback period for a 3kW solar system

Using Solar Choice’s Solar PV System Payback Calculator, we have calculated the payback period and IRR for typical scenarios in each of the state capitals in Australia. This is designed to be a guide and we recommend getting a recent energy bill and using our calculator for your own circumstances. All of the below returns are better than what you can get by leaving your money at the bank and ignores the environmental benefits of putting solar panels on your roof!

The prices used are reflective of the recent average costs for 3kW solar systems as observed in the Solar Choice Price Index. You can enter your specific quoted price and parameters into our calculator.

System CostAssumed Electricity RateAssumed Feed In RateAssumed Daily Energy UsagePayback PeriodIRRAdelaide$3,36024c7c15 kWh4.1 Years24%Brisbane$3,94020c5c15 kWh5.7 Years17%Canberra$3,56019c7c15 kWh5.3 Years18%Darwin$5,81027c9c15 kWh5.7 Years17%Hobart$4,88023c7c15 kWh6.5 Years14%Melbourne$3,72019c8c15 kWh5.8 Years16%Perth$2,87029c6c15 kWh2.9 Years35%Sydney$3,69018c6c15 kWh6.0 Years16%This assumes that 50% of the total energy consumption (15 kWh) is used during the daytime.Pricing per watt installed is unfavourable for 3kW systems in most states, it could improve the payback period to look at a larger system

What about a larger system size?

If you’re reading this article, you may very well have decided that 3kW is the right size for your home. If you’re not yet sure about the right size for you, however, it might be useful for you to know that 6.6kW is now the most popular solar system size in Australia. In fact, we’ve worked out that a 5kW system may even be a better investment for many homes than a 3kW system – see this article.

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Since 2008 our knowledge and sophisticated software has allowed over 160,000 Australian households and businesses to make a well-informed choice on their solar & battery installer.

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© 2019 Solar Choice Pty Ltd

The post 3kW Solar Panel Systems: Pricing, Output, and Returns appeared first on Solar Choice.

30kW Commercial Solar: Pricing, Output, and Returns

30kW solar power systems are becoming an increasingly worthwhile and attractive investment for small to medium businesses across Australia, with payback periods in the 3-5 year range in most parts of the country. This article provides an overview of the ranges of prices, energy yields (in kWh), and financial returns that a business may expect to see from a typical 30kW solar PV system.

How much does a 30kW solar system cost?

The cost of small-scale commercial solar systems has fallen dramatically in Australia over the last few years, thanks to decreasing technology costs and the STC government incentive scheme for systems under 100kW in output capacity.

Since May 2014, Solar Choice has been publishing average solar PV system prices for solar systems from 10kW to 100kW via the Commercial Solar PV Price Index. On average a fully installed 30kW system will cost roughly $30,030 as of November 2021. These figures inclusive of the government incentive (STCs) and GST.

The table below shows the history of average prices for 30kW Solar PV systems by capital city:

30kW Solar system price cost history graph

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50%CommercialIs MobileBusiness NameDo you know what size system you would like to install?Under 30kw30 to 100kW100 to 1MWOver 1MWNot sureWhat stage are you at with your investigations?Just getting startedAlready done some research into solarReceived Quotes AlreadyWhat is the address of the proposed installation?This information is used to identify your roof and the local pre-vetted installers to include in your online quote comparison.Full AddressAddress Line 1CityNSWVICACTNTQLDSATASWAStatePostcodeContact NameEmail AddressPhone NumberUpload a recent power bill (optional)Drop files here or Accepted file types: pdf.Affiliate CodeStatsNameThis field is for validation purposes and should be left unchanged.jQuery(document).ready(function($){gformInitSpinner( 34, ‘https://www.solarchoice.net.au/wp-content/themes/solarchoice/img/btn-ajax-loader.gif’ );jQuery(‘#gform_ajax_frame_34’).on(‘load’,function(){var contents = jQuery(this).contents().find(‘*’).html();var is_postback = contents.indexOf(‘GF_AJAX_POSTBACK’) >= 0;if(!is_postback){return;}var form_content = jQuery(this).contents().find(‘#gform_wrapper_34’);var is_confirmation = jQuery(this).contents().find(‘#gform_confirmation_wrapper_34’).length > 0;var is_redirect = contents.indexOf(‘gformRedirect(){‘) >= 0;var is_form = form_content.length > 0 && ! is_redirect && ! is_confirmation;var mt = parseInt(jQuery(‘html’).css(‘margin-top’), 10) + parseInt(jQuery(‘body’).css(‘margin-top’), 10) + 100;if(is_form){jQuery(‘#gform_wrapper_34’).html(form_content.html());if(form_content.hasClass(‘gform_validation_error’)){jQuery(‘#gform_wrapper_34’).addClass(‘gform_validation_error’);} else {jQuery(‘#gform_wrapper_34’).removeClass(‘gform_validation_error’);}setTimeout( function() { /* delay the scroll by 50 milliseconds to fix a bug in chrome */ }, 50 );if(window[‘gformInitDatepicker’]) {gformInitDatepicker();}if(window[‘gformInitPriceFields’]) {gformInitPriceFields();}var current_page = jQuery(‘#gform_source_page_number_34’).val();gformInitSpinner( 34, ‘https://www.solarchoice.net.au/wp-content/themes/solarchoice/img/btn-ajax-loader.gif’ );jQuery(document).trigger(‘gform_page_loaded’, [34, current_page]);window[‘gf_submitting_34’] = false;}else if(!is_redirect){var confirmation_content = jQuery(this).contents().find(‘.GF_AJAX_POSTBACK’).html();if(!confirmation_content){confirmation_content = contents;}setTimeout(function(){jQuery(‘#gform_wrapper_34’).replaceWith(confirmation_content);jQuery(document).trigger(‘gform_confirmation_loaded’, [34]);window[‘gf_submitting_34’] = false;}, 50);}else{jQuery(‘#gform_34’).append(contents);if(window[‘gformRedirect’]) {gformRedirect();}}jQuery(document).trigger(‘gform_post_render’, [34, current_page]);} );} ); jQuery(document).bind(‘gform_post_render’, function(event, formId, currentPage){if(formId == 34) {} } );jQuery(document).bind(‘gform_post_conditional_logic’, function(event, formId, fields, isInit){} ); jQuery(document).ready(function(){jQuery(document).trigger(‘gform_post_render’, [34, 1]) } );

How much energy will a 30kW solar system produce?

Depending on a number of factors, the actual power output of a 30kW solar power system will vary. These variables include:

Geographical location of the system and the expected daily and annual solar irradiation and cloud cover levels thereOrientation and tilt angle of the solar panel arrayWhether there is any shade cast on the panelsActual operating temperature of the panels

The table below provides a rough indication of the amount of energy that a 30kW solar system will produce per day (averaged over the year) in Australia’s capital cities.

30kW Solar System Energy Output

Capital CityApprox average daily energy production*Adelaide109-122kWhBrisbane116-122kWhCanberra108-124kWhDarwin130-136kWhHobart86-99kWhMelbourne94-108kWhPerth120-131kWhSydney102-113kWh*Assumes north-facing with no shading, 75% system efficiency. Information via PVWatts & Bureau of Meteorology

Keep in mind that the figures in this table are annual averages – daily output figures will generally be higher in the summer and lower in the winter due to the difference in the length of days. In the winter, a system may generate 20-40% less energy, while in the summer it may generate 20-40% more.

Is 30kW the right solar system size for your business?

Determining the right size solar system for your business essentially comes down to three factors:

Roof space available: A 30kW system will require at least roughly 150-200m2 of area, but possibly more depending on the wattage of the panels and whether the they require tilt frames.Your energy consumption habits: In many places in Australia, solar feed-in credits are not paid out for energy sent into the grid by solar systems over 10kW in capacity; this means that any solar energy that your system produces that you cannot use directly is of no financial benefit to you. Solar Choice’s engineers can independently assess your solar needs and develop a business case for you at no cost – click here.Your budget: If you have enough roof space to install the maximum recommended solar system size, then it comes down to whether you have the budget to invest in a system.

What is the typical ROI and payback period for a 30kW solar system?

According to our own data from nearly 300 business cases compiled in 2021, payback periods for appropriately sized commercial-scale solar systems in Australia are around 2 years on average. This factors in both the government STC rebate and the current tax incentives for depreciating solar systems.

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Renewable Energy – The Only Clean Alternatives That Matter


What Is Renewable Energy? What Is Dirty Energy Types of Renewable Energy Sources Solar Energy Wind Energy Nuclear Energy Hydroelectric Power Biomass Energy Geothermal Energy Ocean FAQs Is renewable energy more expensive? What is the best alternative energy source? What is most likely a main goal of using clean energy? What is clean electricity?
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Solar Power Wagga Wagga, NSW – Compare outputs, returns and installers

Approximately 17.3% of dwellings in Wagga have solar panels according to data from the Australia Photovoltaic Institute. With rising electricity rates and solar panels costs as all time lows – there has never been as been a better time to install solar. This article is designed to take you through the basic information you need to know before going to get quotes.

How much energy will a Solar Power System produce in Wagga Wagga?

As an annual average, a rooftop in Wagga Wagga receives around 3.9 hours of sun per day based on figures provided by NREL (although this number will be higher in summer and lower in winter). That means to determine the average daily output of your solar system, you need to multiple the nameplate kilowatt capacity by 3.9. In the below table we’ve calculate the average daily output fo some popular system sizes for you.

Solar PV system output in Sydney (Popular system sizes)Solar system size (kilowatts)
Average daily system output* (kilowatt-hours)3 kW11.7 kWh5 kW19.5 kWh6.6 kW25.7 kWh10 kW39.0 kWh

* Output was calculated using PVsyst software

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What is this energy worth to me?

A solar panel system can save you money in 2 key ways:

Self consumption – Energy produced by the solar power system will be used first in your house and any remaining energy required will be drawn seamlessly from the grid. The amount of solar energy you can directly use in your home will reduce the units power you would have otherwise paid to your electricity retailer. This is referred to as ‘solar self consumption‘.Surplus energy generated by your system can be sold back to the grid – You will be able to sell surplus energy back to the grid for a “solar feed-in tariff“. Generally the rates offered by electricity retailers are less than half the rates you are buying electricity at, so in most cases it doesn’t make a great deal of sense to oversize your system.

You may also be restricted by the Network Provider on what size system you can install and still sell energy back to the grid. In Wagga the Network Provider is Essential Energy. Their rules state that an application will be automatically approved if the system is ≤3kW Rural or ≤5kW Urban, and application meets all other requirements. If larger, then the application will be assessed on a case by case basis and may require export limitation (limit on the amount of energy that can be sold back to the grid).

Use the Solar Choice Payback Calculator to determine what size Solar System is best for your home

Solar Choice Payback Calculator Wollongong

Solar Rebates for Wagga Wagga, NSW

Under the Federal Government’s Solar Credit Scheme, solar systems are awarded a greater or smaller number of Renewable Energy Certificates (RECs, also known as Small-scale Technology Certificates or STCs). How great the solar rebate is depends on the location, the size of the system in question, and the REC price agreed on between the system owner and solar installer.  Most of Wagga Wagga is located in REC Zone 3.

In REC Zone 3, this ‘discount’ works out to about 30% off the sticker price of a fully installed solar system. Keep in mind that this incentive only applies if your system is installed by accredited solar installers using accredited products.

As an example, based on live rebate pricing from Greenbank a 6.6kW solar system installed in Wagga Wagga in 2020 would be eligible for a ‘discount’ of approximately $3,500-3,700.

How much do Solar Panels cost in Wagga?

Thanks in part to the federal incentives explained above, Australia is home to some of the lowest solar PV system prices in the world – which is one of the reasons that so many homes and businesses have solar panels installed.

Solar Choice has been publishing a Solar Price Index since 2012 tracking the average cost of solar broken down by system size and for each state capital. The chart below shows the historic pricing of solar in Sydney which is very similar to the observed pricing in Wagga Wagga.

Based on this average pricing, a typical 6.6kW Solar Panel System will cost around $4,450 including the government rebate and GST.

Sydney average solar panel prices from Aug 2012 to July 2021

See our analyis on: Is Home Battery Storage Worth It?

Finding the best solar deals in Wagga Wagga

Like any project it always makes sense to get at least 3 quotes together before you make a decision. In order to draw an effective comparison it is important to make sure you are sourcing quotes from reputable solar installers with the relevant Clean Energy Council accreditations and a strong track record of delivering high quality systems and a good service. We have pre-vetted a list of solar installers, which we are constantly curating based on real feedback from customers. Hit the compare now button below to get an immediate comparison of the pre-vetted installers in your area.

 

Compare quotes from up to 7 pre-vetted installers in Wagga now.

Since 2008 our knowledge and sophisticated software has allowed over 180,000 Australian households and businesses to make a well-informed choice on their solar & battery installer.
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© 2020 Solar Choice Pty Ltd 

The post Solar Power Wagga Wagga, NSW – Compare outputs, returns and installers appeared first on Solar Choice.

Do Solar Panels Work at Night?


Do Solar Panels Work at Night? The key to success with solar panels is having access to sunlight. While technically, solar panels do not work at night, they capture sunlight during the day so homes can use the electricity when the sun goes down.  The Basics of How Solar Panels Work During the day, solar … Read more

Which renewable energy is better, wind or solar?

Among the various renewable energy sources, wind power and solar power are the most popular green energy alternatives for fossil fuels. They play a significant role in reducing our dependence on fossil fuels. The equipment for extracting solar and wind power are solar panels and wind turbines. The photovoltaic cells inside solar panels, transform the sun’s radiation into electricity.

Wind is also a form of solar energy. The difference in atmospheric pressure caused by the sun’s radiation creates wind. It is a motion-based form of energy.

When wind turns the turbine blades, it’s generator converts the energy of the rotating blade into mechanical power. It is then converted into electric power which can be used to power residential and commercial sectors. Wind and sunlight are domestic source of energy. It is sustainable, abundant and inexhaustible.

Making our planet greener and cleaner

Being a clean source of energy, wind and solar power cut down toxic pollution, thereby making our planet greener and cleaner. It can boost local infrastructure and economies by providing jobs to the local people. With its low operational cost, it can help to power even the most rural regions of the world. But the production, installation, and maintenance of solar panels and wind turbines are expensive.

Most of the people fail to afford it without government subsidies. The price has to come down to convince consumers about the adoption of green energy sources. Economic sustainability is the main thing that stands in the way of green energy adoption. To overpower fossil fuels, it is very essential to find a practical, cost-efficient way to store their power when the sun isn’t shining and the wind isn’t blowing. Both solar power and wind power have some advantages over the other.

dvantages of solar energy over wind power:

• Solar energy provides a more predictable energy output than wind energy. Energy production can be done in a massive scale with solar farms.

• Unlike wind turbines, Solar panels don’t require particular space for installation as they can be installed on the roofs of houses or offices.

• Solar panels hardly produce any noise while wind turbines are noisy.

Advantages of wind power over solar power:

• Solar energy cannot be harnessed at night or during cloudy conditions while wind energy can be harnessed even at night.

• Wind is a more efficient power source than solar. Wind turbines release less CO2 to the atmosphere. A wind turbine produces 4.64 grams of CO2/1kWh while the solar panel produces 70 grams of CO2/1kWh.

• Windpower consumes less energy and produces more energy compared to solar panels.

Which renewable energy is better, wind or solar?

Based on geographical location and energy requirements, one can go for solar or wind option. Going for a wrong choice will cause a great financial loss. Renewable energy experts can help in evaluating the situation and provide an advice on the type of renewable energy to be chosen. Both solar energy and wind energy are intermittent. There are locations where one will work better than the other.

Which is more effective depend on where in the world you are. In sunnier states, solar panels will produce far more energy than a single wind turbine. If one is in a windy spot, wind turbines will produce more energy. Wind systems require environments that are almost barren of large windbreaks and buildings. That accounts for the turbines positioned in lakes and oceans for power generation.

Solar is comfortable in the suburban area

As solar panels can be installed on the rooftops of houses, buildings, schools, and businesses, they are more practical for suburban or urban regions. Transparent solar panels are coming to retrofit roofs and windows. For suburban settings and applications, solar power is usually the best choice. A solar power system has no moving parts and is less space-consuming. It has better reliability and a 25year warranty.

Solar requires less monitoring and less maintenance. It provides more predictable energy output based on BOM and NASA data. It is totally silent in operation and allows for quicker installation with minimal cables. Solar Power is less susceptible to lightning and high wind damage.

The wind turbine is comfortable in the rural area

Most of the local government authorities are against erecting wind turbines in townships as it creates noise and might raise complaints from the neighbours. Wind turbines are not suitable for urban areas. It is ideal for rural regions far from cities that are most in need of power.

A wind turbine can generate the same amount of electricity per kWh as about 48,704 solar panels. It can be built on existing farms or ranches. It doesn’t affect the farmers working in that land as it uses only a fraction of a land. They will also get the rent paid by wind power plant owners for using their land.

The main concerns of wind turbines are the noise from moving parts and visual impacts to the landscape. Wind turbines affect local wildlife as birds and bats get killed by the spinning of turbine blades. The downside of wind energy is that it need not always be fast enough to turn a turbine. Sometimes it is too fast to damage it as well. Wind turbines need regular maintenance because of the moving parts.

Which is more efficient?

The efficiency of solar panels and wind turbines are dependent on how well they can convert sunlight into usable electricity.

Even the most efficient solar panels convert only about 22% of energy harnessed from sunlight into actual electrical energy.

Wind turbines can convert up to 60% of the energy they harness from the wind into usable electrical energy.

Wind power is more efficient, but it is not easy to capitalise on wind power, whereas utilising solar power is much easier.

Which is cost-effective?

Based on the daily usage of electricity, the average amount of sunshine received, and the individual output of panels, one would need around 24 solar panels to meet the energy demands of an average household of six. On average, solar panel costs will range between $11,000 and $15,000. It will generate between 6,000 and 10,000 kWh a year. Installation cost  vary based on numerous factors, including. Its cost per kWh is 4.6 cents.

Annual average wind speed of an area, the size and energy needs of a house decides whether a wind turbine can power a house.

A wind turbine of about 5kW will produce enough energy for a household of 6 people. It would be equivalent to the amount of energy produced by 24 solar panels. Based on the size and height of the turbine and the equipment used, an average wind turbine installation cost will be anywhere between $50,000 to $70,000.

What is the best option?

It will produce about 8,000kWh to 12,000kWh over a year, which amounts to an average cost of 20.3 cents per kWh. This makes solar power less expensive than wind power. The best option is to combine solar power with wind power and power one’s home through multiple renewable energy sources. But it makes sense only for rural communities who have lots of space to spare.

Of the two, low-cost installation and less maintenance makes solar panels the best option for home owners looking for a renewable energy choice. The role of wind will be in utility scale.

Renewable energy sources help to reduce energy costs and has a positive impact on our planet. If wind and solar power can keep up their alarming growth rates, they might both stand up as a strong rival to fossil fuel giants.

The post Which renewable energy is better, wind or solar? appeared first on Regen Power.

Is the idea of solar energy car possible or not?

An increased interest in renewable energy systems has made many automobile companies think in the line of solar-powered cars as a sustainable means of transport. Electric vehicles are cleaner than conventional vehicles. The pollution from electricity used to power cars makes EVs powered by solar energy a better option. Solar cars are electric cars that use solar PV cells to convert solar energy into electricity. It can store in batteries so that the cars can run smoothly at night or in the absence of direct sunlight.

How do solar-powered cars work?

Solar cars are made up of many small solar PV cells which generate electricity. PV cell is sandwiched by semi-conducting material like silicon. When this mixed with phosphorous and boron, gives each side a positive and negative electrical charge, thus creating an electric field between the two layers.

When a photon of sunlight knocks an electron free, the metal conductive plates on the sides of the cell collect the electrons and transfer them to wires. From the wire, electrons can flow like a source of electricity to power the car. There are technological as well as design limitations for a solar car as it won’t be aesthetically appealing. Using the technologies used in the automotive industries the students of the University of New South Wales have developed Sunswift IV for Solar Racing.

dvantages of solar cars

Solar cars have many advantages over conventional ones. It helps to save money on fuel. Solar energy is free and in abundance.  The only additional cost is that of battery replacement.

Solar cars are sustainable and environmentally friendly, thus contributing to the betterment of society by fully avoiding the threat of carbon emissions. It creates a pollution-free environment by fully avoiding noise pollution and air pollution.

The first-ever solar-powered car Sunmobile was invented by General Motors in 1955. It was a small 15inch vehicle. It was made of a small Pooley electric motor and 12 selenium photovoltaic cells.

For the next 65 years, this field remained untouched. No one has managed to invent a full-sized commercial vehicle powered only by the sun. In conclusion, Inefficient technology, weather constraints and energy storage were the barriers to the invention of a fully solar-powered car.

First prototype electric car with solar recharging.

Almost half a decade back, German startup Sono Motors created Sion, the world’s first prototype electric car with solar recharging.

Sion is capable of becoming a mobile power storage device giving backup power when necessary.  It can recharge itself automatically using solar energy. It is free of cost and without carbon emission. The car has 248 solar PV cells incorporated into its body.

Flexible solar cells charge the car whether its parked or driven.  Recharging the vehicle will be 4 times lesser than that of an electric car. Sion’s solar technology is not weather-dependent because they use monocrystalline silicon cells which can produce energy even under cloudy sky conditions.

Their vehicle can capture on average about 16 km worth of solar energy per day if it is positioned well in the sun, kept clean all the time, and the battery is always not full. Sono Motors claims it to be the first commercially available hybrid solar-electric vehicle. It can charge itself using solar power. It takes about 30 minutes to charge up to 80% at a charging station.

Why fully solar-powered cars are not yet a reality?

There are a few reasons why even the most advanced automobile companies couldn’t develop fully solar-powered cars.

Firstly, the low solar panel efficiency. Most of the commercially operated solar panels have only around 20 to 35% efficiency. That won’t suffice travel needs on a low solar day. Secondly, the number of panels to carry in a car is another barrier. It is not feasible packing the cars with solar panels because of their weight and cost. Most importantly,  They are very heavy and expensive as well. Solar films are much lighter than panels. But it cannot be used as a replacement as they are less efficient.

Solar cars with solar PV panels can generate approximately 8 kWh of energy per day. However, energy generation depends on various factors like weather conditions, driving conditions, positioning of the panels, and maintenance of panels.

Poor weather condition, improper positioning of panels, and accumulation of dirt would make it impossible to achieve even that 8kWh.

Though solar-powered cars are very sustainable, they aren’t “100%” eco-friendly. Batteries and solar cells carry a share of the carbon footprint as the raw materials are from the Earth.

Technological advancements in the solar car sector

Technological advancements have made significant progress in the field of solar-powered vehicles. As a result, 2020 has witnessed many such innovations. In 2020 Lightyear introduced a prototype of the world’s first long-range solar car, Lightyear One, with strong solar panels, using 83 Wh/km and accelerating from 0-100 in ten seconds.

Besides powering by the sun, the Lightyear One can be charged at a charging station, using a regular 230-volt socket. On a single recharge, it boasts a range of 450 miles. The company is taking pre-orders and is planning to start production by 2021.

This year Hyundai has released its new Sonata hybrid passenger car equipped with a solar roof which helps to charge its battery. On using for 6 hours, the solar roof could replenish 60% of the car’s battery. A solar roof is an extra option. It can also help keep the car’s 12-volt and hybrid batteries charged even when the car is parked. The panels would provide enough power to propel the Sonata for 1,300km a year.

Hybrid cars have small battery packs, so they make maximum benefit out of solar roofs. It would boost fuel efficiency and lower carbon dioxide emissions. They have improved engine control system to ensure efficient energy use.

Hyundai is now working on a second-generation solar roof that would be semi-transparent to help light the car’s cabin. They are working on improving the efficiency of solar panels and the cost for commercial viability.

Research for the technical optimization

The University of York in the U.K. worked towards increasing the ability of solar panels to absorb light by a stunning 125%.

consequently, the same amount of absorber material, ten times more solar power could be generated. They promise lighter, thinner, cheaper, more flexible solar panels.

Current research into low-weight batteries and high-efficiency photovoltaic cells will make solar-powered cars viable in near future.

Attempts to make automobile technology more sustainable in the future by building a fully functioning solar car or its hybrid version has been undertaken by many automakers including Toyota, Hyundai.

Certainly, solar vehicle market is in limelight now. According to some estimates, it could reach $689 billion by 2027. It gives a hope that cars and small vehicles could be fully powered by sun very soon.

The post Is the idea of solar energy car possible or not? appeared first on Regen Power.

What are the flaws of solar panels?

Solar energy is the most popular renewable energy sources available on Earth. It has become a competitive alternative to fossil fuels. Solar energy is a sustainable energy source, has a low environmental impact, and promotes energy independence. Above all, going solar is a low-risk investment with heavy returns. With over 2.3 million solar rooftop installations, most Australians enjoy the benefits of solar power. Despite numerous advantages, solar panels have few drawbacks too. Some of the flaws of solar panels are as follows

Cost

Solar panels are expensive. Not everyone can afford to buy it.  Though there is good return on investment, it takes some years to match the initial investment.

The development of solar technology, hike in electricity prices, increased feed-in tariff and government incentives have brought down its cost to an extent.

Solar financing options like state-backed loan programs, leases and power purchase agreements help people with the initial investment for installing solar panels.

The amount one has to pay for the panels depend on the tax credits, rebates, and the chosen financing option. A zero-down solar loan allows one to save money on their electric bill and enjoy the benefits of owning a solar system.

Partial requirements

Solar panels are space-consuming. The number of panels depends on the energy needs of the client. Therefore, number panels will be more for high energy consumption.

As the size of panels are large, it requires a large roof area for installation. If the roof is not big enough either we have to downsize the system or install some of the panels in the yard where there is access to sunlight.

Some of the best solar installers will provide flexible designs for smaller roofs.

For large grid-scale solar installations, space can be a bit of an issue. Since solar panels have a lower power density, they need a larger area for power production.

Power density is the amount of power derived from an energy source within a certain area. It is measure in watts per square meter (W/m2).

Weather dependent

Solar panel performance is directly proportional to the amount of sunlight that hit the panels. It depends on the steady absorption of photons for power production.

Based on location, season and time of the day the intensity of sun varies. Intermittency of solar energy affects the power production.

Solar panel efficacy will be more on sunny days than on cloudy or rainy days. Snow and foliage cover can also affect energy production.

Batteries allow homeowners to store solar power when it is produced in excess and draw energy from the battery at times when there is no production.

Batteries are usually bulky and heavy, space-consuming, and needs replacement from time to time.

The most popular residential solar battery is the Tesla Powerwall, a 13.5 kWh lithium-ion battery.  Sonnen, LG, and BYD are some other battery manufacturers who offer great solar batteries for home energy storage.

Environmental downside

Environmental pollutants are involved in its manufacturing as well as recycling of solar panels.

Toxic materials and hazardous products are used during the manufacturing process of solar PV. It can affect the environment in a negative way.

Cadmium is sealed inside the panels. It is harmless as long as it is inside the panels, but once outside it can cause serious environmental damage.

Some panels contain harmful pollutants, like sulphur hexafluoride, which is more potent than carbon dioxide.

While disposing panels, utmost care has to be taken to prevent these carcinogenic substances from mixing up with soil and water.

Low Energy Conversion Rate

Conversion rate is the rate at which the panels convert sun’s energy into power. Even for the most advanced solar panels it is very less.  It is 20-25% only.

Conversion rate depends on certain factors like the direction of the panels and location.

No power production at night

Solar panels need sunlight to produce power. There is no power production during night as sun doesn’t shine at night. It can generate power only 12 hours of a day.

Anti-solar panel which can produce power at night is likely to hit the market in near future. Research and development are conducting on this subject.

A hassle while moving out of the Installed Location

If there is any plan to move out in near future, it is better not to install solar panels at all. It is very expensive to dismantle, de-wire, and transport the solar panels to a new location.  The most feasible option is to leave them back if one is planning to move the house.

The net metering agreement with the utility is fixed to the property. The new owner will have to take over the agreement if there is a solar lease or a power purchase agreement.

Though the solar panels have to be left behind while moving the house, it will improve the property value.

Roof consideration

Solar panels don’t work for every type of roof. It is difficult to install solar panels on slate or cedar tiles. Apartments with skylights or roof decks also pose a problem for installing solar panels. On the other hand, you can make use of community solar garden or install solar panel in ground.

Repairs to the underlying roof become a problem after solar panel installation. Therefore, it is better to repair and do the necessary roof work before installing solar panels.

Panel deterioration.

Solar panels degrade at a rate of 1% each year. Degradation takes place when constantly in use.

The rate at which they degrade depends on the severity of conditions it undergoes.

High temperatures and severe frost cause rapid degradation. Temperature fluctuations can cause microscopic cracks that hamper power production.

Rain, snow, dirt, hail and wind also pose a serious threat of panel deterioration.

Solar panels require solar inverters

Electricity generated by the solar panels are direct current (DC). We cannot use it as such. It has to be converted to alternating current (AC) for usage at home, business, and for the power grid.

A solar inverter converts DC current to AC current. A solar power system cannot function just with solar panels. It needs a solar inverter too.

However, solar panels do have some aesthetic, economic and technical drawbacks. The advantages of Solar PV outnumber its disadvantages.

Certainly, a proper planning and responsible maintenance will help to do away with these disadvantages.

As a part of its attempt to move towards sustainability, researches are being done in Australia to develop cheaper, more flexible and more efficient solar panels.

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