Frequently Asked Questions

Carbon offsetting allows individuals and businesses to reduce their environmental impact. By purchasing carbon offsets, customers support environmental projects that remove greenhouse gas emissions from the atmosphere (such as planting forests), or prevent future emissions from occurring (such as replacing a coal-fired power station with a wind farm). One unit of carbon offset represents one metric tonne of greenhouse gas emissions reduced or removed from the atmosphere.

There are seven main greenhouse gases: carbon dioxide, methane, nitrous oxide, chlorofluorocarbon, hydrofluorocarbon, sulfur hexafluoride and nitrogen trifluoride. 

Each greenhouse gas has a different impact on climate, called the global-warming potential (GWP). Each greenhouse gas has a different environment impact which can be measured through the Global-Warming Potential (GWP) metric. Based on their respective GWP, each greenhouse gas can be converted into carbon dioxide equivalent (CO2e) to determine their individual and combined contributions to global warming. Hence, carbon offsetting is typically transacted in CO2e as a common unit.

Singapore Airlines calculates cargo emissions using TEM’s BlueHalo® technology. The BlueHalo® software uses the current UK Department for Environment, Food and Rural Affairs (DEFRA) international standards to convert greenhouse gas emissions associated with your cargo such as aircraft type, distance travelled and litres of fuel used, to tonnes of CO2e. The BlueHalo® calculations are continually updated as best practice international standards for greenhouse gas calculations evolve.

The average flight factors published in the 2020 UK Government Carbon Emissions Factors documentation are utilised. This is commonly referred to as DEFRA factors.

We utilise the average flight factors published in the 2020 UK Government Carbon Emissions Factors documentation, commonly referred to as DEFRA factors.

The DEFRA aircraft emissions factor approach is consistent across passenger and freight calculations, which uses an emissions calculation tool to derive the average emissions factors from real world flight activity data.

Your company’s data will be processed within 48 hours and an email notification will be sent when it has been successfully processed.

Yes, you will receive an email notification with the file of the offset transactions that were not calculated due to data errors in cargo information.

Yes, one’s company data is required so as to ensure that the correct tax (in regions where this is applicable such as Australia and New Zealand) is applied in the invoice.

The SIA Group’s voluntary carbon offsets are provided via the BlueHalo® digital solution, a system by Australia-registered carbon offset provider, Tasman Environmental Markets (TEM). Hence, only Australia-based entities are subjected to GST.

Customers can make an electronic bank payment through invoicing.

SIA supports carbon offset projects that are verified in accordance with international standards by independent third-party auditors under the Verified Carbon StandardProgram and the Gold Standard 

These standards ensure that each project delivers real, measurable emissions reductions, which would not have occurred in a business-as-usual scenario, should the project not be implemented. Each project is then issued carbon offsets, and each offset holds a unique serial number for traceability to prevent double accounting in the market. For instance, if the project demonstrated a reduction in emissions of 1,000 tonnes, they would be issued with 1,000 verified carbon offsets. Supported projects are also compliant or finalising compliance with strict criteria under the Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA) governed by the International Civil Aviation Organization (ICAO). 

Carbon offsets purchased by corporates are retired by TEM in the respective carbon registries where the projects are verified. This ensures that the offsets cannot be traded again.

SIA supports a portfolio of accredited projects which brings about environmental and socio-economic benefits to communities in Asia. These projects include:

Our portfolio of projects includes:

• Forest restoration initiatives in Indonesia which capture and stores carbon in trees, preserve habitats for native wildlife, and support development of the local villagers through employment and training opportunities.
• Solar energy projects in India that generates clean renewable electricity for power which would otherwise have been supplied by a fossil-fuel fired power plant. These projects also creates jobs, and strengthens rural electrification coverage.
• Distribution of efficient, clean burning cookstoves which significantly reduce the amount of smoke produced during cooking and associated health risks, particularly for women and children who are responsible for preparing meals in Nepal.

Learn more about the projects we support here

No. SIA does not profit from the sale of carbon offsets purchased under the carbon offset programme. All contributions made by customers are used to source carbon offsets from projects worldwide, which includes administration fees paid to TEM to carry out due diligence of sourcing and supplying carbon offsets, including managing the offset retirement process and all carbon accounting.

No. SIA does not profit from the sale of carbon offsets purchased under the carbon offset programme. All contributions made by customers are used to source carbon offsets from projects worldwide, which includes administration fees paid to TEM to carry out due diligence of sourcing and supplying carbon offsets, including managing the offset retirement process and all carbon accounting.

The SIA Group continues to find new pathways to reduce our impact on the environment. At the same time, we remain committed to enhancing our customer’s journeys with us. Learn more about our sustainability initiatives here.

Developed by the International Civil Aviation Organization (ICAO) in 2016, the Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA) is a carbon reduction and carbon offset programme to lower carbon emissions for international flights and reduce aviation’s impact on climate change. 

It is the first global market-based measure developed for the aviation sector to offset residual carbon emissions that cannot be directly reduced through technological and operational improvements, and sustainable aviation fuels, in order to meet ICAO’s aspirational goal of carbon neutral growth from 2020. ICAO sets strict criteria for which carbon offset project development programmes are eligible for compliance under CORSIA. 

CORSIA plays an integral role in helping the aviation industry decarbonise in a cost- efficient manner. The SIA Group has voluntarily participated in it since 2019, ahead of the mandatory implementation for all airlines from 2027.

While SIA supports and complies with longer-term international obligations under CORSIA to reduce emissions from international aviation, we believe that every act counts and we aim to empower our customers to play a part in reducing their impact on the environment and contribute back to society. Voluntary contributions to the programme help to bring about environmental and socio-economic benefits to communities in Asia.

No. SIA will manage all compliance requirements under CORSIA at our own cost, and not at a separate charge to customers.

TEM is an Australia-registered carbon offset service provider that supports Singapore Airlines Cargo through its BlueHalo® digital platform which allows instant calculation of cargo flight emissions and the offset of those emissions via this website.