Businesses globally are looking to reduce their carbon footprints. This activity is being driven by a number of factors. It is both ethical busi- ness practice to operate business sustainably for the environment but it is also smart for sustainable business success. Demonstrating envi- ronment leadership enhances business reputation, retains and attracts customers, investors and staff, and enhances market value. Impor- tantly, marketplace trust will be built by robust carbon accounting and genuine action and genuine reporting. As the environmental element of an ESG carbon quantification and reporting must be completed to a recognised standard and methodology. This can follow the CDP model (previously called the Carbon Disclosure Project) and calculated in ac - cordance with The Greenhouse Gas Protocol or an international ISO standard such as BS EN ISO 14064 part 1. This ISO standard has a verification element published as part 3 of the standard, making it particularly suitable for a CDP model of carbon measurement and the basis of a carbon reduction plan. Compliance with this standard requires measurement, quantification, and report - ing of the three scopes of greenhouse gas inventories. Scopes 1 and 2 largely comprise direct and indirect energy use through business operations, travel, heating and lighting. These are the most commonly reported scopes. Scope 3, despite being often the largest of the scopes, is less frequently reported. It’s sometimes misunderstood that a company’s scope 3 greenhouse gas emissions are simply the scope 1 and 2 emissions of their suppliers. This would merely be the carbon equivalent of fuel and energy use and could be considered to represent a double counting of carbon emissions. Sometimes, this reasoning is used to justify not measuring or reporting an organization's scope 3 emissions. It has been stated by some, that if all companies report their scopes 1 and 2 there would be no need for these “other indirect emissions” that make up scope 3 to be reported. However, there are 15 different emission sources included in scope 3, as defined by the greenhouse gas protocol corporate reporting standard. They can be the largest part by far of an organization's carbon footprint, and not all of them can justly be laid at the foot of the supply chain. Taking this back a step; scope 1 emissions are direct emissions from sources such as stationary combustion for example furnaces, ovens and central heating plus direct mobile combustion such as in company owned vehicles like company cars or delivery vans. Scope 2 emissions are in- direct emissions from purchased energy sources, most commonly this is electricity bought in to operate the business lights, IT, and machinery. Although scope 3 will include the scope 1 and 2 emissions of suppliers, for example, it also includes items that are very much the emissions of the reporting organization. While some scope 3 emission sources can be a little harder to collate data for, the size of their contribution Scope 3 Emissions – More Than Suppliers By Dr. Torill Bigg
to an organization's greenhouse gas emissions in total means that environmental responsibility demands sufficient commitment to their measurement and so the visibility that lends allows for reduction op- portunities from them. Let’s examine these scope 3 emission sources and consider if there is a legitimate reason for their omission: 1. Emissions from business travel. For example, if an employee travels to a business meeting on behalf of the company, in their own car and then re-claims that in expenses, these are scope 3 emissions. And organizations have the opportunity to reduce these emissions through actions such as incentivising more remote meetings, encouraging greener travel through bicycle purchase schemes, rail travel season ticket loans, and incen- tives for employees to buy electric cars as their private car. 2. Transmission and distribution emissions resulting from the pur- chase of electricity. While the electricity bought in is part of scope 2, the transmission and distribution losses belong in scope 3. Not reporting scope 3 emissions means that this element of electric- ity used in the running of the business is not reported. 3. Water use and treatment. There are plenty of good options allowing the reduction of supplied water use. These include harvesting of rainwater, water re-use in a grey water system, maintenance and prevention of leaks and losses and fitting water reduction gadgets to hand washing basins and toilet cisterns. Reducing the quantity of water supplied saves money, conserves an essential resource, reduces the quantity of waste- water to be treated, reduces your greenhouse gas emissions - and belongs in scope 3. 4. Waste disposal. How a company disposes of their waste materials is included in scope 3 - The organization can choose to dispose of refuse by landfill, or by separating out their waste for recycling. They can play an active part in reducing waste materials so that the amount disposed of is less. These are all part of business practices in business strategies that all deci- sions made by the reporting organization. 5. Investments. Money is a powerful enabler. An organization has the opportunity to select investments that are environ- mentally responsible. They might invest in green bonds or they might choose to invest without taking into account the profile of their investments. This choice is still within the organization's power and can be one of the greatest tools in the fight against climate change. Move the money, move the power. Investments are part of your scope 3 emissions. 6. Freighting and transport. When transporting out goods or mail packages, an organization can select how those items are freighted. We can select the type of transport with the lowest carbon emissions for the purpose. For example, larger cargo ships have a smaller carbon footprint per tonne of goods con- veyed, and transport by train has a lower carbon footprint than transport by HGV. Changes can be made to ensure optimal use of freighted loads, and how they are packed can consider reus- ability of the packaging materials or structures themselves. All in all, organizations have control over, and choices in, a very large element of the scope 3 emissions. As such it is not acceptable to plead that scope 3 is out of their control and is effectively in the gift of their supplier chain.
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csengineermag.com
April 2023
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