> For the complete documentation index, see [llms.txt](https://carbonze.gitbook.io/carbonze/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://carbonze.gitbook.io/carbonze/measure/1.3.-mobile-combustion.md).

# 1.3. Mobile Combustion

Scope 1.3. Mobile Combustion&#x20;

Mobile combustion refers to the direct greenhouse gas (GHG) emissions produced by company-owned or leased mobile sources, such as vehicles and equipment, that operate within your organization’s inventory boundaries.&#x20;

These emissions occur through the combustion of various fuels (e.g., gasoline, diesel, natural gas) while vehicles or equipment are in transit. This category is part of Scope 1 emissions, which are direct emissions from sources that are owned or controlled by the company.&#x20;

**Scope 1.3 Mobile Combustion:** &#x20;

Scope 1.3 specifically deals with emissions from mobile sources including:&#x20;

* **On-Road Vehicles:** Company-owned cars, trucks, buses, and motorcycles used for employee transportation, product distribution, or other company operations.&#x20;
* **Off-Road Vehicles and Equipment:** Includes construction machinery, forklifts, agricultural machinery, and other mobile equipment used in various operations.&#x20;
* **Leased Mobile Equipment:** Vehicles and equipment that are leased by the company but still under its operational control.&#x20;

These mobile sources are integral to various business operations, from logistics and transportation to construction and field services. Emissions from these sources must be accounted for accurately to ensure a comprehensive GHG inventory.&#x20;

**Key Considerations:**&#x20;

* **Exclusions:** Mobile sources like emergency generators that are moved between sites do not fall under mobile combustion but are instead categorized under stationary combustion.&#x20;
* **Control and Ownership:** Only emissions from vehicles and equipment directly owned or controlled by the company are included in Scope 1. If the company lacks direct control over these sources, such as third-party transportation, the emissions fall under Scope 3.&#x20;

**Calculation Guidance:**&#x20;

When calculating emissions from mobile combustion:&#x20;

1. **Collect Fuel Consumption Data:** Obtain data on the quantity of fuel consumed by each type of mobile source within your inventory boundaries.
2. **Determine Emission Factors:** Apply the appropriate emission factors for each type of fuel used. Emission factors can be sourced from recognized databases like the IPCC or EPA.
3. **Calculate GHG Emissions:** Multiply the amount of fuel consumed by the emission factor to determine the total emissions for each mobile source. Sum these amounts to get the total emissions from mobile combustion for your organization.&#x20;

**Tip:**&#x20;

Ensure that the data used for calculating mobile combustion emissions is precise and covers all relevant mobile sources within the organization’s control. Regularly update and verify this data to maintain an accurate GHG inventory.&#x20;

This process is crucial for understanding your organization's carbon footprint and for identifying opportunities to reduce emissions from mobile sources, such as optimizing routes, switching to more fuel-efficient vehicles, or considering alternative fuel options.&#x20;

For more detailed guidance on accounting and calculating mobile combustion emissions, consult the GHG Protocol or similar standards that provide step-by-step instructions for emission calculations.&#x20;