Commercial Solar Projects

Planning, Design and Monitoring are crucial to setting up an efficient system

Commercial Solar Projects

Planning, Design and Monitoring are crucial to setting up an efficient system

System Design

Monitoring

System Sizing

System Design

Monitoring

System Sizing

Commercial Solar

 

Most businesses consume the bulk of their power during daylight hours, which is ideal for solar power.

Because of this ideal fit, a Commercial Solar System will usually pay itself back in as little as 2-3 years.

Initial Consultation Expectations

 

A detailed discussion on your business requirements, budget and any anticipated future  developments  will need to be explored so that a system is designed accordingly

A thorough site visit will need to be done to check for any shading, type of roof, where and what type of electricity meter boards you have and where is the best location for the inverter.

Design and System Layout.

 

When setting up a Commercial Solar Project there are various important steps that must be followed to ensure that the system that has a site-specific design plan

 

Energy Assessment & Savings Estimation

Conduct a site inspection to assess electrical supply and shading issues

Obtain a structural report on the roof

Application to Synergy, Western Power and Local Government

A Commercial Solar System needs to be designed to suit each particular business.

The design and layout of a system must be done correctly so that the most amount of power generation can be done at the right times of the day.

This will ensure that the business can maximize the solar generation to offset the business’s energy consumption

Shading

 

Air-conditioning vents, smoke stacks, aerials etc, are often found cluttering up roof space.

It is important to make sure that during the course of the day these objects are not going to cast any shadows on the panels. Shading on a panel reduces the efficiency of not only that panel but will affect other panels on that string reducing the systems efficiency substantially.

Tilt Frames

 

If a roof is flat or in the wrong orientation, tilt frames will be needed so that the panels can face the right direction and at the right angle.

Tilting panels also helps to facilitate rain run-off and self-cleaning of the panels.

Products

 

The inverter is the heart of the system and this is the most important consideration when deciding on a system.

Evosol Commercial prefers to use Solaredge inverters as they allow for greater system design and have powerful monitoring capabilities.

The most important consideration is that the inverter has a good warranty.

In regards to the panels, there is no set standard for the brand of panels, apart from they should be a Tier 1 panel and be in the top 10 of recommended Tier 1 panels.

Commercial Solar

 

Most businesses consume the bulk of their power during daylight hours, which is ideal for solar power.

Because of this ideal fit, a Commercial Solar System will usually pay itself back in as little as 2-3 years.

The most important consideration when looking to set up a Commercial Solar System is that it is a well-designed system that is tailored made, and uses quality products backed by a local supplier warranty in Australia.

Initial Consultation Expectations

 

Our Commercial Solar Consultant will check the business power consumption during the day and for over the different times of the year to aid in sizing up and designing the system properly.

A detailed discussion on your business requirements, budget and any anticipated future  developments  will need to be explored so that a system is designed accordingly

They will also check your current electricity tariff to see which is the best tariff for you. Often a low day and high night tariff is in place, however with solar this can be reversed.

You will also need to know if you have locked in your tariff with an electricity company

A thorough site visit will need to be done to check for any shading, type of roof, where and what type of electricity meter boards you have and where is the best location for the inverter.

In the quote, you will receive a cash flow model from the expected solar power generation, as well as an analysis of your power bills showing you the expected payback time

Design and System Layout.

 

When setting up a Commercial Solar Project there are various important steps that must be followed to ensure that the system that has a site-specific design plan which has all of the Council and Government regulations in place, and that the system will offset electricity costs as outlined in the solar proposal

 

Energy Assessment & Savings Estimation

Conduct a site inspection to assess electrical supply and shading issues

Obtain a structural report on the roof

Application to Synergy, Western Power and Local Government

Product order and delivery

Install racking, fit panels and wiring

Install inverters

Commission the system and set up the system monitoring

A Commercial Solar System needs to be designed to suit each particular business.

Over sizing a commercial system is wasted money as there is no feed in tariff for excess power generated.
Excess power goes back to the grid without the business receiving any money.

The design and layout of a system is not only to get approval, but it must be done correctly so that the most amount of power generation can be done at the right times of the day,.

This will ensure that the business can maximize the solar generation to offset the business’s energy consumption

Depending on the times of the day when the business consumes power will reflect on the layout of the panels.

If a business consumes a lot of its power in the morning, then the system will require the right number of panels to be facing East for morning sun generation; or West for afternoon generation.

Shading

 

Air-conditioning vents, smoke stacks, aerials etc, are often found cluttering up roof space.

It is important to make sure that during the course of the day these objects are not going to cast any shadows on the panels. Shading on a panel reduces the efficiency of not only that panel but will affect other panels on that string reducing the systems efficiency substantially.

If there are shading issues then a different type of system using “Micro Inverters or Optimised Panels” will need to be considered; although this adds to the overall cost of the system by about 20%, but an under performing system will cost a lot more in the long run.

 

Tilt Frames

 

If a roof is flat or facing South then there is the need to use tilt frames so that the panels can face the right direction and at the right angle.

Tilting panels also helps to facilitate rain run-off and self-cleaning of the panels.

If the roof has a slight angle; say 10 degrees (not to the south) then there is the economic consideration to weigh up as to whether spending extra money on tilt frames will give enough added generation to pay for the added cost of tilt frames.

If a roof is unsuitable to take the load of a large number of solar panels or any other reason, panels can be mounted on the ground, but the cost for ground mounting frames can be quite costly.

Products

 

The inverter is the heart of the system and this is the most important consideration when deciding on a system.

In general, if there is no shading, then depending on the size and system design, more than one string inverter will usually be used. This allows for a more flexible system design.

Solaredge, Fronius or SMA inverters are the most common type of inverter chosen, however other inverters are also suitable, even one or two high quality Chinese Inverters are acceptable.

Evosol Commercial prefers to use Solaredge inverters as they allow for greater system design and powerful monitoring capabilities.

The most important consideration is that the inverter has a good warranty and any product reviews done give the thumbs up.

In regards to the panels, the larger 72 cell panels are generally used which have the added advantage of using more powerful panels.

There is no set standard for the brand of panels, apart from they should be a Tier 1 panel and be in the top 10 of recommended Tier 1 panels.

Monitoring

Monitoring both the systems solar generation and energy consumption can add to overall savings by being able to see when peak solar generation occurs and where to match energy consumption to suit.

Not only will Evosol Commercial monitor the system but someone within the business should also be tasked with monitoring weekly generation and energy consumption.

Maintenance

 Evosol Commercial has a 10 year maintenance schedule  to make sure the system is working as expected.

Panels are self-cleaning but should be cleaned once a year as bird poop, debris and dust and can accumulate.

Monitoring

 

Monitoring both the systems solar generation and energy consumption can add to overall savings by being able to see when peak solar generation occurs and where to match energy consumption to suit.

Not only will Evosol Commercial monitor the system but someone within the business should also be tasked with monitoring weekly generation and energy consumption.

Maintenance

 

Evosol Commercial has a maintenance schedule. The system is first checked  3 months of the initial install, then a check will be done in another 6 months, and another service check after a year.
Following this, a service check will be done in 3 years, 5 years and 10 years  to make sure the system is working as expected.

There is no set schedule to clean panels as they are self-cleaning, but bird poop, debris and dust and can accumulate, so it is always wise to set up a panel cleaning schedule.

(A word of caution, some “shonky” companies have it in their fine print that “they” must clean the panels every so often for a substantial fee and if they don’t the panel warranty is void).

This is just one more reason to choose Evosol Commercial to set up your solar system as we offer an Extended Service Guarantee and our fine print is user friendly

System Sizes

Up to 30kW

Systems of up to 30kW fall under the same rules as residential systems and are quite simple and inexpensive to get the system approved by the relevant authorities.

In general, the application can take up to 30 days for Western Power to approve while they check on the system design.

In some cases, the application may be rejected pending further design information and then approved when all design parameters are met.

In general, the local council will be informed and an application made to them. This usually costs around $500. Although, most Solar Companies don’t consult the Councils when smaller Commercial Solar systems are installed.

It is a practice with Evosol Commercial to ensure that a local Council application is made to install a Commercial Solar system if it is 30kW

It is important to have a structural engineer check out the roof structure to make sure it is sound and can handle the weight of the panels.

Depending on the roof structure and size a Structural Engineers report can cost upwards of $500 (as a ball park figure).

Systems over 30kW

 
Solar systems over 30kW have a different approval process and can take up, to and in excess of 6 months for approval by Western Power.
Systems of this size require special protection equipment to limit the excess power going back to the grid.

A NPR chartered Engineer will be required to design this type of system
OZtron Energy are the NPR Chartered Engineers who design and commission Evosols systems over 30kW

For applications for systems over 30kW, there are substantial costs.

The Western Power application fee is around $5500

The NPR Engineers fees can be up to $10,000 or more depending on the design of the system and any additional voltage protection equipment can easily be around $10,000 or more.

For large systems, there is a substantial amount of voltage that can be fed back into the grid during peak production times which needs to be considered

The time to get the design approved can take up to 6 months or even longer.

This is an important point of consideration because in this time, the cost of the Government STC subsidy can drop, and depending on the fine print in the Solar Companies contract, the cost of the system can increase or be cancelled.

For this reason, it is prudent to make sure you ask about installation times; will the price quoted remain the same regardless of any other considerations; have all the correct submissions to the relevant authorities been done etc, and make sure you have this in writing.

Once the Sales Agreement is authorized, then the price is confirmed and no extra charges will be added.

The time to get the design approved can take up to 6 months or even longer.
This is an important point of consideration because in this time, the cost of the Government STC subsidy can drop afecting the price of the system.

Systems over 100kW.

Systems this size fall into similar application parameters as the 30kW -100kW systems, and may take a considerable amount of time to be approved

In regards to the Government STC subsidy; over 100kW systems are not eligible for this subsidy; however they are entitled to a different subsidy call LGCs, (large group certificates)

System Sizes

 

Up to 30kW

Systems of up to 30kW fall under the same rules as residential systems and are quite simple and inexpensive to get the system approved by the relevant authorities.

It is a practice with Evosol Commercial to ensure that a local Council application is made to install a Commercial Solar system if it is over 30kW

It is important to have a structural engineer check out the roof structure to make sure it is sound and can handle the weight of the panels.

Systems over 30kW

 
Solar systems over 30kW have a different approval process and can take up, to and in excess of 6 months for approval by Western Power.
Systems of this size require special protection equipment to limit the excess power going back to the grid.

A NPR chartered Engineer will be required to design this type of system

For applications for systems over 30kW, there are substantial costs

STC’s and LGC’s

(Government Subsidy)

Commercial Solar is not eligible for the “net feed in tariff”(excess energy fed back to the grid), Commercial Solar Systems up to a 100kW still qualify for the STC subsidy.

LGCs require a special meter and entail detailed paperwork to track and monitor the systems solar generation.

To claim LGCs the system owner must apply to become an “accredited power station” with the Clean Energy Regulator.

Warranty.

 

Solar modulel performance warranty is a standard 25-year performance warranty.

The first 10 years the panels are expected to perform at 90% panel efficiency and the following 15 years at 80% panel efficiency.

The panels physical warranty varies between solar companies but the standard is 10 years.

STC’s and LGC’s

(Government Subsidy)

Even though Commercial Solar is not eligible for the “net feed in tariff”(excess energy fed back to the grid), Commercial Solar Systems up to a 100kW still qualify for the STC subsidy.

STCs (Small Trading Certificates) are a Government subsidy that is paid in advance for the next 13 years ahead (reducing by a year January 01 every year) on the expected solar generation of a system that reduces carbon emissions.

Starting January 01 2019 the STC subsidy reduces to 12 years.

The STC subsidy is usually factored into the price of a system given in a quote

LGCs require a special meter and entail detailed paperwork to track and monitor the systems solar generation. The subsidy is claimed each year and is not given as a subsidy on the up front price when purchasing the system.

To claim LGCs the system owner must apply to become an “accredited power station” with the Clean Energy Regulator.

Warranty.

 

In regard to the panel performance warranty, all companies have the similar standard 25-year performance warranty.

This means the first 10 years the panels are expected to perform at 90% panel efficiency and the following 15 years at 80% panel efficiency.

The panels physical warranty is usually a standard 10 years with some companies offering 12 years and LG and Solarwatt offering 25 years and 30 years respectively.

It is more important to make sure of the panel manufacturing warranty as this can be visibly checked, whereas in reality, unless you have a SolarEdge system where each panel is Optimised, it is not that easy to check the panel performance.

Please contact one of our team so we can be of assistance to you

Please call one of our friendly team members if you would like some advice on setting up a, solar system
or would like to make a time for one of our consultants to visit your business and discuss any aspect of Renewable Energy.

Unit 2 / 31 Christable Way
Landsdale, Perth, 6065

Ph: 93025061

sales@evosolcommercial.com.au
www.evosolcommercial.com.au

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Please contact one of our team so we can look after you

Our Office and Showroom

Our Contact details if you would like to call us for some advice on setting up a solar system,
or make a time for our consultants to visit your business and discuss a plan for setting up a solar system.

Unit 2 / 31 Christable Way, Landsdale, Perth, 6065.

Ph: 93025061

sales@evosolcommercial.com.au
www.evosolcommercial.com.au

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