Solar energy

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Before you sign a solar-related contract, carefully research the company name, products and potential rebates.

Solar panels

Solar panels, also called solar photovoltaic (PV) systems, use sunlight to generate renewable electricity. They can generate clean power, which can help reduce energy bills and benefit the environment.

To make the best choice, you need to understand what you are signing up to. Some systems can be expensive. Any problems with installation or repairs can add significant extra cost. Rebates or feed-in tariffs may lower the cost of ownership.

A typical 4kW (kilowatt) solar panel system can help most households pay a lot less for electricity. You will still need to draw the rest of your electricity from the state electricity grid.

The amount of electricity your system generates will depend on several factors. These include:

  • number of panels
  • size and quality of panels
  • angle of panels (north-facing roofs are best)
  • the weather.

Consider these factors when you estimate costs and benefits of installing solar panels.

Solar batteries

Solar batteries can store energy from solar panels. You then use that energy when the sun is not shining. Batteries can reduce your energy bills. 

Batteries are expensive, but cheaper battery systems may not offer better value. The Victorian government offers a rebate, to help with the cost, in some parts of the state. For details, see the Solar battery rebate page on the Solar Victoria website.

Batteries store energy that would otherwise feed into the electricity grid. Unlike solar panels, batteries generally do not benefit the environment. 

The financial and environmental benefits of batteries are likely to increase.

Power during blackouts

Some systems can use batteries to power your home during a blackout. If blackouts are common in your area, or the consequences would be severe, you should research this option. Confirm with the battery retailer whether the system you choose offers this function.

Storage capacity

To decide what size battery is right for you, check the 'usable capacity'. This may be less than the total capacity of the battery.

Before you buy a solar energy system

Do some reading

Shop around

  • Decide what type of solar energy system you want and what system would suit your home.
  • Get quotes from several Clean Energy Council-accredited installers. For help with this, visit the Find an installer page on the Clean Energy Council website.
  • Read online reviews and feedback about the retailer.
  • Ensure you are comparing quotes for the same type of solar energy system and features.
  • Talk to your energy retailer. Ask about the rates for electricity drawn from, and fed back into, the grid.

Before signing a contract

  • If you expect to claim a Solar Homes package rebate, confirm whether you are eligible. You must do this yourself, via the Solar Victoria website
  • Check that the contract's terms and conditions match everything the salesperson told you.
  • Check that the contract specifies a completion date. It should also explain what happens if they miss the completion date.
  • Read and understand the warranty conditions. Compare the length of warranty on products.
  • Read and understand the supplier's policy on repairs. 
  • Negotiate the amount required as a deposit (usually 10 per cent).

Solar Homes package rebates

Eligible households and landlords can apply for solar rebates and interest-free loans. The Victorian Government offers rebates for solar:

  • panels for homeowners
  • panels for rental properties
  • batteries
  • hot water.

For more information and to check your eligibility, visit the Solar Victoria website.

Do not rely on any statements that you will receive the rebate, unless Solar Victoria confirms it.

Beware of scammers pretending to be from the Victorian Government or Solar Victoria. They may ask for your bank account details, or pressure you to pay a deposit over the phone. For more information, view our Rebate scam page.

Before signing a contract for any solar installation, research the name and reputation of the business. Confirm eligibility to apply for a rebate before signing or paying a deposit.

Solar certificates

Small-scale technology certificates are sometimes called 'solar credits' or 'solar rebates'. These are tradeable certificates from the Commonwealth Government. They are an incentive to install renewable energy products, such as solar panel systems.

The most common way to get these certificates is through a registered agent. If a solar panel company is registered, it may offer you:

  • an up-front discount off the cost of the system, or
  • a cash rebate.

The company uses your certificates to get the money back from the Government. It is possible to create and trade these certificates yourself, but it is complicated.

The discount or rebate will depend on:

  • where you live, and
  • how much electricity the system will generate by 2030.

One certificate equals one megawatt-hour (MWh) of electricity production by 2030. The panel installer should give you this information before you sign the contract.

For more information on solar certificates, visit the Claiming small-scale technology certificates page on the Clean Energy Regulator website.

Feed-in tariffs

A solar feed-in tariff is a payment you receive via your electricity retailer. It is a credit on your bill for the excess electricity your solar energy system feeds into the grid.

For example, at certain times of the day your panels may produce more electricity than you use. If it is sunny, the system generates electricity. If no one is home, energy consumption will be low. By feeding the excess electricity back into the grid, you can earn money from feed-in tariffs.

The feed-in tariff is a rate that is set per kilowatt hour (kWh).

All electricity retailers with more than 5,000 customers must offer consumers the option of a single rate tariff. The minimum rate is 12 cents per kWh for 2019-20.

They may also offer different packages and terms and conditions - for example a 'time varying' tariff. This option gives customers a minimum credit of between 9.9 cents and 14.6 cents per kWh. The rate depends on the time of day.

For more information, visit the Minimum feed-in tariff page on the Essential Services Commission website.

Problems with a solar product or installation

If you have a problem with a solar product, such as a faulty inverter, view our Problems with a product section.

If you have a problem with the installation, documentation, or with other services, view our Problems with a service page.

If you paid by credit card and can no longer contact the business, consider asking the card provider for a chargeback. For more information, view our Chargeback page.

For advice on dealing with a business that has become insolvent, view our Insolvency page.

You can pay an inspector to check for problems before they become noticeable. To find an inspector, visit the Registered Inspection Companies page on the Energy Safe Victoria website.

Problems with your energy retailer or distributor

Visit the Energy and Water Ombudsman (EWOV) website or call 1800 500 509, if an energy retailer or distributor:

  • cannot resolve your problem or complaint
  • is not applying feed-in tariffs to your bill.

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