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Frequently Asked Questions

How much power should my solar system produce in kilowatt hours (kWh) per day?

See the Clean Energy Council guide below for an indication of production in your area:

Average daily production







Alice Springs











































4.4 kWh

6.6 kWh

8.8 kWh

13.2 kWh

17.6 kWh


3.9 kWh

5.85 kWh

7.8 kWh

11.7 kWh

15.6 kWh

The Rated output is that achieved in perfect laboratory conditions. 

What other factors can impact the performance of my system?


Shading has a large effect on the performance of a solar power system. The time of day matters; if the shading occurs outside the hours of 9am-3pm, the impact may be nominal.

Partial shading of the system also matters as all panels in a section need to run at the same voltage; if one panel is shaded even partially, this will bring down the production of the whole system. There are ways around this such as splitting the array into multiple strings or using micro inverters on the back of panels which we can suggest for your circumstances.

Roof Orientation

In the Southern hemisphere, North facing roofs are the best for solar though the loss from facing the system East or West is nominal and more recently some people believe that a Western orientation is equally as effective as a Northern one, as the power generated from the solar panel more optimally aligns with the power usage in the premises.

Roof Inclination

The angle of your roof doesn’t have a huge impact on your system’s production thought to get the best production, your roof should be pitched at the same degrees as the latitude of your location.

Tilting panels

We are often asked whether tilt frames should be used to tilt the panels so that they’re closer to the optimal angle. In most cases we recommend using the money you would have spent on tilt frames on purchasing additional panels as the difference in production for say a 25 degree roof and a 0 degree roof is only 5% production. Additionally tilt frames require space between the rows of panels so that panels don’t cast shadows over each other meaning that if you use tilt frames you can only install fewer panels.

What can I expect to see when my system is installed?

The panels will be lined up neatly on your roof and your inverter will be installed in a visible area with plenty of ventilation on either site.

What size system should I install?

This depends on several factors including your budget, the number of panels you can fit on your roof, how much energy is consumed during the day, and what you and/your business is wanting to achieve in terms of savings on your electricity bills.

Do I want to reduce my bill or totally wipe it out, what size system will I need to do either?

This will depend on your budget and many other factors, so give us a call and we’ll come out and see you and offer you different options so you can make an informed decision.

How much is the Feed in Tariff in my state and how much extra do I receive from my electricity retailer?

As this changes over time, please contact us on 1800 836 374 and we can tell you immediately over the phone.

How long will it take to pay off my system?

For most Venergy commercial installations it is only 2 ½ – 3 ½ years.

This depends on the size of system you install, the direction the panels face, the percentage of that production that you or your business will consume during the day, the percentage you’ll export to the grid, the Feed in Tariff in your State and the cost of the system. A Venergy representative can customize a solution for you and explain the different factors to you taking into account all of the above. Please contact us on 1800 836 374 to arrange an appointment.

Can you show me what effect the system will have on my bill?

Yes we can. But as this will depend on many factors, we need to see your electricity bills and customize our recommendations to suit you, your circumstances and/or your business.

Is roof pitch a big factor on the production of my system?

This isn’t worth worrying about. A 25 degree pitch is optimal and you’ll lose 1% production with every 5 degree deviation. This means that the difference between a flat roof and the average roof is 5% production.

Can you produce a roof plan to show me where my panels will be placed?

Yes we can. Venergy will produce a roof plan for you, or multiple roof plans if you are considering different sized systems, and will also get on your roof to assess it before the day of install.

Can you tell me my payback period and return on investment?

Yes we can. This information can all be provided in the form of a complimentary, no obligation proposal. Contact us now on 1800 836 374 to request one. On commercial solar systems, the payback is usually between 30-42 months.

Do you offer low rate, $0 deposit, finance options?

Yes we do. Contact us now on 1800 836 374 for more information.

Do you offer after sales service and support?

Yes we do. Here at Venergy, we take enormous pride in our after sales service standards in the solar industry. We do this by providing a high-standard of after sales service support beyond the date of installation, a professional repair and maintenance service including the best possible assistance in installing, using, and maintaining the power of the sun.

If you have any concerns with your system, please do not hesitate to contact us on 1800 836 374 and we will endeavor to attend to your enquiry as soon as possible.

What maintenance is involved with the system?

This generally involves cleaning the panels with soapy water once or twice a year depending on rainfall. A car cleaning hose will do the job nicely.

How long has Venergy been around?

Venergy has been operating since 2009 and was one of the first solar companies in Adelaide. The business has the same founder and managing director from the beginning and we plan on being around for many years.

How many systems has Venergy installed?

We have installed over 2,000 systems of all sizes, including many commercial, industrial, and residential installations of 30kW, 60kW and up to 90kW and everything in between, across South Australia.

Do you have a physical office I can visit?

Yes we do. You can visit us at 701-703 Port Road Woodville Park during regular business hours, Monday to Friday.

Can you provide me with references in my area?

Yes, with the permission of our customers, we can provide you with address references so that you can see what we have done for them. Alternatively, you can look at our photo gallery here.

Do you handle all the rebate paperwork for me so I just have to pay the difference? Will you connect me to the grid so I don’t have to do this?

Absolutely! Venergy will take care of the rebate so all you pay is the difference and don’t have to worry about any of the paperwork. We will also liaise with SA Power Networks to get you connected to the grid.

What documentation will I receive both before and after the install?

We will provide you with a customized solar solutions proposal, a roof plan and a sales agreement outlining all of the components that go into the system and the terms and conditions of the contract. After install you will receive a notice of compliance from the CEC accredited installer.

How long will the Government rebates be available for?

There are strong commercial reasons to act now – immediately. Our competitive prices are further heavily subsidized by the current Government grants that Venergy is able to facilitate on your behalf as part of the Government’s earlier commitment to renewable energy.

The new Liberal Government has already publicly indicated that the funding for current energy programs is under review. The Government has a history, for sound commercial reasons, to announce changes that terminate Government grants such as this, instantly and without notice. Based on this, we urge you to consider solar at your earliest opportunity so that you don’t miss out on thousands of dollars worth of savings.

Why go solar at all?

There are many reasons to go solar, the most common ones being to save money on your energy bill, to reduce your reliance on the rising cost of power from the grid, to get paid for any excess power your export back to the grid (if eligible), to add value to your home and to reduce your carbon emissions and other harmful toxins that harm the environment by using solar power instead of conventional power sources like gas and coal.

And after you have paid off the initial investment in the system, that’s money in your pocket every month if you have no power bill or a subsidized power bill. Even that initial investment can be further greatly reduced thanks to the Government rebate program which offers huge incentives to solar power users, drastically cutting the cost of a new solar power system and paying them in advance for the projected power usage of their system. Find out more about this here

In short it’s a greener, cleaner, cheaper source of energy and is good for you, your budget, and the environment.