Published

2 years ago

December 13, 2023

Alice Rush

Sustainable Energy

Sustainable Aviation

By Putra

4 minutes read

Introduction

The aviation industry seeks to reduce its carbon footprint and meet sustainability goals, sustainable aviation fuel (SAF) has emerged as a viable alternative to traditional aviation fuel.

SAF is produced from renewable feedstocks, such as plant oils, waste oils, and agricultural residues, through various production technologies and processes.

In this article, we will explore the technology and processes behind SAF production, their advantages, and the current state of SAF production.

SAF Production Technologies

There are three primary technologies used in SAF production: Fischer-Tropsch (FT) synthesis, hydroprocessing, and alcohol-to-jet (ATJ) conversion.

Fischer-Tropsch Synthesis

This technology involves the conversion of syngas (a mixture of carbon monoxide and hydrogen) into long-chain hydrocarbons through a series of chemical reactions. The resulting product is then refined to produce SAF. FT synthesis is mainly used to produce synthetic jet fuel from biomass, coal, or natural gas feedstocks.

Hydroprocessed Esters and Fatty Acids (HEFA)

Hydroprocessing

This technology involves the conversion of bio-oils or fats through hydrotreating and hydrocracking into SAF. The process involves the removal of impurities and sulfur, followed by the use of a catalyst to break down the feedstock into shorter chain hydrocarbons. Hydroprocessing can produce SAF that meets all the specifications required for aviation fuel.

Alcohol-to-Jet (ATJ) Conversion

This technology involves the conversion of bioethanol or other alcohols into SAF through a series of chemical reactions. The process involves the dehydration of the alcohol to produce a hydrocarbon intermediate, which is then refined to produce SAF. ATJ is a promising technology due to the abundance of ethanol feedstocks.

Sustainable Aviation Fuel (SAF) Production

Here are some key data points related to SAF production that could be included

The production of SAF is expected to increase from the current 100 million liters per year to 2 billion liters per year by 2025 (source: International Air Transport Association).

SAF production can reduce greenhouse gas emissions by up to 85% compared to traditional aviation fuel (source: World Economic Forum).

Hydroprocessing is the most common technology used in SAF production, accounting for around 80% of current SAF production capacity (source: International Renewable Energy Agency).

SAF has been approved for use in commercial aviation by various regulatory bodies, including ASTM International, the European Union Aviation Safety Agency, and the Federal Aviation Administration (source: Air Transport Action Group).

The aviation industry aims to achieve carbon-neutral growth by 2020 and reduce net CO2 emissions by 50% by 2050 compared to 2005 levels, with SAF playing a key role in achieving these goals (source: International Air Transport Association).

Advantages of SAF Production

SAF production offers several advantages over traditional aviation fuel, including:

Reduced Carbon Footprint: SAF production significantly reduces greenhouse gas emissions by up to 85% compared to traditional aviation fuel.

Improved Air Quality: SAF production reduces the emission of harmful air pollutants such as particulate matter, nitrogen oxides, and sulfur oxides.

Increased Energy Security: SAF production reduces dependence on fossil fuels and diversifies fuel sources, ensuring energy security.

SAF Production Status

The production of SAF is still in its early stages, with limited commercial-scale production capacity. However, the demand for SAF is growing, driven by the aviation industry’s sustainability goals, and various initiatives are underway to scale up SAF production.

According to a report by the International Air Transport Association (IATA), the production of SAF is expected to increase from the current 100 million liters per year to 2 billion liters per year by 2025. Furthermore, the report estimates that SAF could replace up to 25% of the aviation industry’s fuel needs by 2050.

Conclusion The Technology and Processes Behind Sustainable Aviation Fuel (SAF) Production

SAF production technologies offer a promising solution for the aviation industry’s sustainability challenges.

FT synthesis, hydroprocessing, and ATJ conversion are the primary technologies used in SAF production, with each technology having its advantages. SAF production has the potential to significantly reduce greenhouse gas emissions and improve air quality, and the demand for SAF is expected to grow in the coming years.

Despite the current limitations on SAF production, the aviation industry has made significant progress towards developing a sustainable aviation future. Governments, airlines, and industry partners are investing heavily in the research and development of new SAF production technologies and processes, with the aim of increasing production capacity and reducing production costs.

Furthermore, the adoption of SAF by airlines and airports is increasing, with major airlines such as United Airlines, Delta Air Lines, and Lufthansa committing to using SAF in their operations. Additionally, various airports, including San Francisco International Airport and Los Angeles International Airport, have introduced programs to encourage the use of SAF by airlines.

The transition to a sustainable aviation industry requires a collaborative effort from all stakeholders, including governments, airlines, airports, and industry partners. With the continued growth in demand for air travel, the aviation industry must prioritize the development and adoption of SAF to achieve its sustainability goals and mitigate its impact on the environment.

https://www.exaputra.com/2023/05/the-technology-and-processes-behind.html

Related Topics:processes sustainable aviation fuel.technology

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Before Trump, “Contempt of Court” Used to Be a Big Deal

Published

18 hours ago

November 28, 2025

Alice Rush

Most Americans, me included, are puzzled as to how the Trump administration can openly thumb its nose to the findings of our courts. Until recently, behavior like this would have wound you up in jail.

Before Trump, “Contempt of Court” Used to Be a Big Deal

Renewable Energy

How Households Saved $1,200 with VEU & Air-Con Upgrade?

Published

1 day ago

November 28, 2025

Alice Rush

Over the decades, many households across Victoria have resided in older suburban homes equipped with traditional ducted gas heating and aging split-system air conditioners.

However, today the scenario has changed significantly. As energy prices rise, families are feeling the pinch, with annual heating and cooling costs often rising $2,000.

But what are the main issues?

Gas systems that waste energy heating unused rooms, old non-inverter aircons that struggle to maintain even temperatures, and confusion among residents about how rebates, such as the Victorian Energy Upgrades (VEU) program, actually work.

That’s where trusted providers like Cyanergy Australia step in!

By replacing outdated systems with efficient reverse-cycle multi-split air-conditioning and applying VEU rebates, we help many households to cut energy bills, reduce emissions, and enjoy year-round comfort, all in one smart upgrade.

This air conditioning upgrade can lead to a smoother transition from gas to clean, efficient electric heating and cooling, building a smarter, more sustainable home.

So, let’s break down how the household saved $1,200 with the VEU & Air-Con upgrade, what the program offers, and how you can take advantage of similar rebates to cut costs and enjoy a more energy-efficient home.

In this blog post:

Cyanergy’s Energy Assessment: What We Found!

From the beginning, Cyanergy’s focus was to remove or disconnect the old gas ducted heater, install a modern
reverse-cycle multi-split air conditioning system, claim the VEU discount, and significantly reduce your annual
energy bills.

Simply via the effective air-conditioner upgrade, households can “Save
up to $2,000 a year on your energy bill.

Here are the findings after Cyanergy’s initial home energy visit:

In many Victorian households, the ducted
gas heater is still in use, with high standing and fuel costs.
The older split system had poor efficiency. Some of them were oversized for the room and lacked zoning
options.
The electrical switchboard had spare capacity to support a multi-split installation. For example, one
outdoor unit
with multiple indoor units for different zones.

Home Heating & Cooling Upgrade| The Step-by-Step Path

It’s well-known that the upgrade path usually involves replacing old systems with modern, energy-efficient solutions.

So, from gas to an energy-efficient electric system, let’s have a look at the upgrade story:

Choosing the right system

For the households that want to upgrade under the VEU air
conditioner rebate, we proposed a multi-split reverse-cycle system:

One efficient outdoor inverter unit connected to three indoor units

One in the main living area, one serving the upstairs bedrooms, and

One for the downstairs zone, which had very little heating or cooling.

Going multi-split provides flexibility: you only run the zones you need, resulting in lower energy
consumption.

However, in Victoria, Cyanergy is a renowned company that handles design, quoting, installation, and also guides
families through rebate
eligibility.

Decommissioning the old gas ducted heater

As part of eligibility for the VEU discount, the existing gas heater needed to be decommissioned in most cases.

This involves removing the system or disconnecting the ducted unit from the gas supply, following proper procedures
and obtaining certification, and utilizing expert installers.

Installation Process & Timing Period

Initially, after checking the eligibility, apply for the quotes.

The quote needs to be accepted and dated.

Then the installers will remove the old ducted heater, seal off the vents, and remove or disconnect the gas
appliance.

The outdoor inverter unit should be mounted externally in these households. The indoor units need to be
installed in each zone, minimising the intrusion of ductwork and piping.

The wiring and electrical breaker must be upgraded as needed.

The system will then be commissioned, and the necessary documentation will be submitted to the accredited provider for the VEU scheme.

Choosing efficiency over just cooling

Rather than improving just cooling, the Victorian households treated the upgrade as a heating & cooling renovation, switching to a system that uses electricity rather than gas.

Modern inverter systems are more efficient, as they modulate their output, offer better zoning, and can both heat and cool, allowing you to enjoy both winter comfort and summer cooling in one system.

At Cyanergy, we emphasise this home upgrade path:

“Efficient and Eco-Friendly Electric Multi-Split Air Conditioner. Take advantage of up to $7,200 in Victorian Government Energy Upgrade incentives, save big this winter on your gas bill.”

Out-of-pocket and rebate

Here is recent data from the average estimation for a household from the aircon rebate case study in Victoria.

In the quotation, the family had an installation cost of approximately $8,000 for the new multi-split system, including the decommissioning.

The VEU discount for gas-ducted to multi-split upgrades in Victoria was approximately $2,500.

So, their net out-of-pocket cost was ($8,000 – $2,500), which is approx $5,500.

How to Apply for the VEU Rebate: Are You Eligible?

The Victorian Energy Upgrades (VEU) program provides rebates for eligible energy-efficient upgrades such as
installing a high-efficiency reverse-cycle air conditioner to replace an older heating or cooling system.

Before we discuss how
the rebate works, here are the eligibility criteria.

So, to qualify under the VEU program:

The property must be more than two years old.
The existing heating or cooling system must be removed or replaced.
The new system must be an eligible high-efficiency reverse-cycle unit installed by an accredited
provider.

How the Rebate Works

In this case, the quote from Cyanergy already included the VEU discount, meaning the price shown was the net cost
after applying the rebate allocated to the installer.

After installation:

The accredited provider registers the upgrade with the VEU program.
They create and claim Victorian Energy Efficiency Certificates (VEECs) for the upgrade.
The value of those certificates is passed on to the customer as an instant discount on the invoice.

The homeowner simply has to:

Signs off that the old system was removed or decommissioned.
Provides any required evidence or documentation, like serial numbers or photos.

The Result

The rebate is applied instantly at the point of installation, reducing the upfront cost — no need for the homeowner
to submit a separate claim.

Why is the VEU rebate significant?

Rebates like this make a big difference in the decision-making process. As the website says:

On average, households that upgrade
can save between $120 and $1,100 per year on their energy bills.

Additionally, the government factsheet notes that households can save between $120 and over $1,000 annually,
depending on the type of system and upgrade.

Thus, the rebate reduces the payback period, making the system more widely available.

Energy Bill Before vs After: See the Savings!

Here’s where the real story says: the household’s actual bills before and after the upgrade.

Before Adding Air Conditioning System

Ducted gas heating and an older split system.
In Victoria during winter months, the average monthly gas cost is approximately $125, and for electricity,
and other supplementary costs, an additional $30. So roughly $155 per winter month. Therefore, over the
course of four months, the price can reach nearly $620.
In summer cooling months, if their older split system ran for 2 hours per day, for example, from May to
October, it would cost around $50 per month. Over the 6 months, it will be, $300.
Total annual heating and cooling cost is approximately $920

After Adding the Air Conditioning System

Household that installed a Multi-split reverse-cycle system.
During the winter months, running the zones efficiently and utilizing the inverter system resulted in a
decrease in heating electricity costs.

Let’s say the average is around $70 per month over four months, totaling approximately $280.

In the summer months, efficient cooling costs approximately $30 per month over six months, totaling around
$180.
So, the annual heating
and cooling cost is approximately $460.

Net Savings

Annual savings: $920 (before) – $460 (after) = $460 per year.

At that rate, the upgrade pays for itself in net savings and an upfront rebate.

However, as they also removed gas connection fees and standing charges, improving comfort, therefore, the “effective”
savings were perceived to be higher, around $1,200 in the first year with the air conditioning upgrade.

This figure also includes avoided gas standing charges of $150, lower maintenance costs of the old system, and
improved efficiency.

Maximising Your Savings| Key Insights from the VEU Rebate Program

Based on the case study and Cyanergy’s experience, here are some lessons and actionable tips for homeowners
considering an upgrade.

Don’t wait until your system dies.

Replace outdated or inefficient gas or electric resistance systems immediately. Once the system starts
failing, you
may have fewer options or higher installation disruption.

Choose a provider who handles the rebates.

Dealing with the rebate or discount component (VEU) on your own adds complexity, like documentation,
compliance, and
installation. So look for an accredited provider.

Understand the actual savings potential.

It’s not just the rebate amount; consider running costs, efficiency improvements, zoning, and the ability to
heat and
cool.

Ensure proper sizing and zone control.

As many families discovered, the benefit came from zoning: you only heat and cool rooms you use. Oversized
units or
whole-home heating can reduce savings.

Factor in non-energy benefits.

Better comfort, for example, quieter systems and more consistent temperatures, as well as the removal of gas
standing
charges, less
maintenance, and improved resale appeal for eco-conscious buyers, all benefit you.

Check the accreditation and compliance.

With rebate programs, there’s always a risk of non-compliant installations or companies that don’t follow
through.

So, do your homework: check that the installer is accredited for VEU, ask for references, and ensure that the
documentation is completed appropriately.

Request detailed quotes that include estimates for both “before rebate” and “after rebate”
costs.

This helps you see how much you’re actually paying, the discount you receive, and ensures transparency. The
rebate is
not always the full difference; minimum contribution rules apply.

Monitor your bills after installation.

Keep track of your energy bills (gas & electricity) before and after for at least 12 months. This will
indicate
whether the savings are as expected and aid in budgeting.

Be realistic about pay-back

Although the rebate helps upfront, large systems still cost thousands of dollars. Don’t expect payback in one
or two
years (unless you have extreme usage).

However, with a well-designed system, rebates, and efficiency gains, a payback of 5-10 years or better is
possible,
depending on usage.

Final Notes

This aircon rebate case study illustrates the VEU saving. By working with Cyanergy Australia, households transformed a traditional, inefficient gas-ducted heating and older split cooling system into a modern, efficient, zone-controlled multi-split reverse-cycle air-conditioning system.

This was made more affordable through the VEU scheme discount.

The result? A net cost of around $5,500, improved comfort, and savings of approximately $1,200 in the first year.

This real-world “VEU saving example” shows that:

Rebates matter as they make the upgrade financially viable.
Efficiency matters as modern multi-split reverse-cycle systems deliver lower running costs.
Removing inefficient gas heating can unlock significant savings.
A reliable installer who navigates the rebate process effectively is crucial.

So, if you are looking for an accredited provider in Australia, Cyanergy is here to help!

Contact us today to receive a free solar quote. We will handle all your paperwork to ensure a fast and smooth installation process.

Your Solution Is Just a Click Away

The post How Households Saved $1,200 with VEU & Air-Con Upgrade? appeared first on Cyanergy.

How Households Saved $1,200 with VEU & Air-Con Upgrade?

Renewable Energy

Air Power

Published

1 day ago

November 28, 2025

Alice Rush

About 20 years ago, a friend asked me if I was aware that cars could run on air. I asked, delicately, what she meant, and she explained that cars can run on compressed air.

“Ah,” I replied. “Of course they can. But where does the energy come from that compresses the air?” End of conversation.

Now, it’s back. Now there are enormous swaths of the population who know so little about middle school science that they believe we can put cars on the road, in an ocean of air, and extract energy out of that air to power our automobiles.

If you’re among these morons and want to invest with some heavy-duty fraud/charlatans, here’s your opportunity. They say that it’s “self-sustaining and needs no fuel.” If that makes sense to you, be my guest.