🌱 WTT (Well-to-Tank): This term refers to the greenhouse gas (GHG) emissions that occur during fuel production, processing, and transportation until they are ready for use. It covers the entire upstream process, from extracting raw materials to delivering the fuel for use in vehicles or facilities.

⚡ T&D (Transmission and Distribution): T&D represents the emissions associated with energy loss during the transmission and distribution of electricity from power plants to the end-users. These losses lead to additional emissions, considered when calculating overall electricity-related emissions.

🔄 WTT T&D: This combines both WTT and T&D emissions, providing a comprehensive overview of upstream emissions from fuel production and downstream losses in energy distribution. It allows for fully assessing the energy supply chain’s environmental impact.

📊📈 Categorization and Reporting of WTT Emissions

WTT emissions are reported under different categories depending on the type of activity and the scope of emissions:

🔧 Scope 1 and Scope 2:

  • Scope 1: Direct emissions from owned or controlled sources 🏭.

  • Scope 2: Indirect emissions from the generation of purchased electricity ⚡, steam, heating 🔥, and cooling ❄️ consumed by the reporting company.

    WTT Emissions:

    • These are categorized under Fuel and Energy-Related Activities.

🌐 Scope 3:

  • Scope 3 includes all other indirect emissions within a company’s value chain, such as emissions from business travel ✈️, upstream transportation 🚚, and downstream transportation 🚢 etc.

    WTT Emissions:

    • WTT emissions are reported within the corresponding category of the Scope 3 activity. For example, WTT emissions for business travel are included under the business travel category.

🧮🔍 Calculation Methodology on the Platform

The platform calculates WTT, T&D, and WTT T&D emissions based on the DEFRA (Department for Environment, Food & Rural Affairs) emission factors. It’s crucial to align the emission factors used with the appropriate reporting year to ensure accuracy:

⚠️ Important Note: The platform automatically uses DEFRA factors for the calendar year in which the greatest portion of the data falls.

For Example:

  • 🗓️For Reporting Years Starting in April (01.04.2023 – 31.03.2024): The platform uses the 2023 DEFRA emission factors.
  • 🗓️For Reporting Years Starting in October (01.10.2023 – 30.09.2024): The platform uses the 2024 DEFRA emission factors.

🌎📏The platform primarily uses DEFRA emission factors for calculations. While DEFRA provides the well-to-tank (WTT) emission factors, the EPA acknowledges that DEFRA’s WTT factors can also be applicable.