Excellent Solar specialise in designing and installing Solar Energy Systems for small medium and large businesses specifically to your business needs. We will conduct a pre-feasibility Study of your electricity usage needs system requirements. Systems may involve complex energy projects and need detailed planning to encompass your energy needs and objectives. We will create a site evaluation and feasibility study and our engineers will incorporate only quality products, from the most reputable manufacturers using our experienced and accredited installers to implement the final design.

Solar Energy is one of the fastest growing trends in construction, mining and engineering industries. Competing in a global landscape with ever rising costs and market pressures of electricity pricing can be extremely unstable. In a highly competitive market, solar can have a significant impact on both your energy costs and helping to differentiate your business against competitors. Having a high quality and reliable partner that you can trust to deliver a seamless installation can provide you these things without incurring a strain on your business. Excellent Solar can work with your organisation from feasibility, design and concept all the way through to installation. Some specific reasons why solar is well suited to the Construction, Mining and Engineering industries include:

  • Long term benefits of mitigating rising utility energy costs.
  • Improves energy efficiency in peak periods
  • Builds environmental credentials with accountable CO2 reductions
  • Enables stable electricity flow and price in a competitive landscape

What size system should I install? Why?

The size of your system should align with your goals, timelines and your budget. Whatever your looking for Excellent Solar will tailor a solution to your unique circumstances and needs. The first step to deciding the size of your solar PV system should be to carefully review your current energy needs. Your system should be sized appropriately to match your businesses electricity consumption and maximise self-consumption, saving you cash on your ongoing energy bills.

Do you require Mono or Poly-crystalline solar panels?

Do you require Mono-crystalline or Poly-crystalline solar panels is your personal choice, based on what best suits your energy needs and goals. It is important to keep in mind that in many circumstances, the overall performance and benefits of your system will often be influenced more by factors like good sizing and expert design and installation techniques than whether your panels or mono – or polycrystalline


Do you want to be completely or partially off the grid?

Do you want to move away from the grid and become as energy independent as possible, battery storage could be a great addition to your system. But keep in mind that the difference between being 80 or 90% grid independent and completely off-grid might be a big in cost.

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What is the feed-in tariff in my state?

A feed-in tariff is the rate you are paid for excess electricity generated by your solar system that you export back to the grid. If you generate more electricity than you use, your system will feed this back into the grid, and your energy retailer will pay you a feed-in tariff. Feed-in tariffs vary in each state and with each energy retailer, so it’s best to shop around and find the best deal for you. Keep in mind however that over time, a well designed solar energy solution will be sized to not feed too much energy back out to the grid, and therefore the feed-in tariff you can get shouldn’t be one of the main deciders on your solution.

How will this system affect my electricity bills?

Always ask your consultant if they can show you how your chosen solar energy system will affect your power bills. When deciding on the right system for you, your provider should establish your current average energy usage per day to decide on the right solar PV system and the right type of panels and inverter for you, and whether a battery makes sense. Once they have this information, they should be able to give you an indication of what to expect from your system and how this may affect your future power bills.

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Excellent Solar will account for your exact circumstances in their estimates and will be able to explain them if you ask – the estimates from a reputable provider might look worse on paper, but they are often more honest and accurate than cheaper providers.

How much will this cost me?

  • Government incentives and schemes
  • Installation costs
  • Type and number of solar panels
  • Type and size of inverter
  • Framing equipment
  • Height and accessibility of your roof
  • Componentry and installation quality  

Will you need Battery storage?

Most solar energy systems can be connected to battery storage. However, selecting the right battery storage solution for your existing solar energy system depends on a few different factors, including what you want to achieve and the feed-in tariff you’re getting. As part of reviewing your energy needs, your goals for business expansion in the future will help with deciding on whether battery storage is right for you. You may need to consider adding some more panels to cater for your night-time energy usage as well as your daytime usage. You can certainly work towards taking your business mostly ‘off the grid’, but many business owners are content with being 70% to 90% grid independent, with the grid connection there as a back-up if needed.


What is the warranty on my panels and inverter?

  • We will honor all manufacturers solar panel warranty is to protect its performance, which is generally around 20 years.
  • Installation and maintenance warranty is generally between five and ten years.
  • An inverter warranty is the most important warranty; this is the piece of equipment that converts your solar energy into electricity ready for use, and it works all day every day at very high voltage. Inverters generally have a warranty of five years for standard inverters and up to 10 years or more for premium inverters.
  • The installation warranty covers issues resulting from poor installation of your system. These warranties vary greatly from provider to provider, but generally are a minimum of two years and more like 5 years from quality providers. A longer installation warranty period can assure you of your solar provider’s confidence in their installers.

Regulatory Requirements

Each commercial or above size system must have connection approval of a solar generation system to their grid. Excellent Solar ensures early in the design phase that all connection requirements are met.  Quite often distributors require an electrical engineer’s certificate for systems over a given size. Our team of engineers have you covered.

  • Reverse power protection relays
  • Export limiting devices (e.g. zero export)
  • Ramp rate
  • Manual system restore
  • Power factor settings other than 1.0
  • Additional anti-islanding provisions for inverters.
  • For more information regarding this subject, refer also to the CEC Embedded Generation Guide (>100kW), section 3.7.2.)

Controlling feed-in to the grid

Feeding to much energy to the grid at one time can cause considerable problems, for example consider industrial estates with several hundred kW of solar installed, and no-one working during the weekends – this is a lot of solar energy moving out of a site and into the grid, causing voltage rise and damage to the ‘poles and wires’ (transformers and sub-stations). rent times of the year. consider the following example – same site, different days of the week:

Why choose Excellent Solar?

Excellent Solar will design and install a solar energy system tailored to your business’s needs. Their Australian Based Support team are your local point of contact and will add even more value to your solar investment. When it comes to after-sales care and support, local knowledge and personalised product advice is invaluable. Customer support that is based overseas can often mean costly delays in repairs or servicing, not to mention possible language or context barriers between you and your customer service representative. With Australian-based customer support, you can be sure you’re dealing with a local who knows your area and understands your needs, and you can have a local advocate in warranty claims compared to dealing overseas suppliers, saving you time and money.

We will provide you with all the necessary training and documentation for you to understand and operate your system soon after the installation has been completed. This documentation will be critical if you ever need to lodge a warranty or insurance claim. You will also receive a system user manual, a list of equipment supplied, shutdown and isolation procedures for emergencies, connection diagrams, performance estimates, maintenance guides and timetables, the commissioning sheet and installation checklist, the installer’s declaration of compliance with the Clean Energy Council, warranty information, the PV array frame engineering certificate, the equipment manufacturer’s documentation and handbooks and a checklist of actions to be taken in the event of an earth fault alarm.

Once your system has been installed, check that you have received all the necessary documentation and follow up with your provider immediately if you are missing anything. You should also check that your meter has been scheduled for any necessary upgrades or replacement by your electricity retailer, if necessary, and that your electricity retailer has applied the correct tariff to your energy bills.

Excellent Solars designers, products and installers are Clean Energy Council accredited.

The Clean Energy Council is the leading regulatory body for the clean energy industry in Australia and helps to ensure good customer service and ethical sales and marketing activities by retailers. Clean Energy Council accreditation shows good capability in the design and installation of solar energy systems. Only systems designed and installed by Clean Energy Council accredited electricians are eligible for government rebates, so it’s important to know and ask this question upfront if you plan to apply for any incentives or rebates. If you claim a rebate on a system that is then found to not be designed or installed by a Clean Energy Council accredited electrician, you may find yourself having to pay thousands more for your system than you expected.