HomeEnvironment & EnergyClimate ChangeWhat is Scope 1/2/3 Emissions?
Environment & Energy·2 min·Updated Mar 13, 2026

What is Scope 1/2/3 Emissions?

Scope 1, 2, and 3 Emissions

Quick Answer

Scope 1, 2, and 3 emissions refer to the different categories of greenhouse gas emissions associated with a company or organization. Scope 1 includes direct emissions from owned or controlled sources, Scope 2 covers indirect emissions from the generation of purchased energy, and Scope 3 encompasses all other indirect emissions that occur in a company's value chain.

Overview

Understanding Scope 1, 2, and 3 emissions is essential for addressing climate change. Scope 1 emissions are those that come directly from a company’s operations, such as emissions from vehicles or machinery. For example, a manufacturing plant that burns fossil fuels for energy will have Scope 1 emissions from that combustion process. Scope 2 emissions are related to the energy a company purchases, such as electricity, steam, or heating. Even though a company may not produce these emissions directly, they are responsible for them because they are the end users of the energy. For instance, if a company buys electricity from a coal-fired power plant, the emissions from that plant are considered Scope 2 emissions for the company. Scope 3 emissions include all other indirect emissions that occur in a company’s supply chain and product lifecycle. This can include emissions from the production of raw materials, transportation, and even the disposal of products after use. These emissions are often the largest share of a company’s total greenhouse gas emissions and are crucial to consider in efforts to combat climate change.


Frequently Asked Questions

Scope 1 emissions are direct emissions from owned or controlled sources, while Scope 2 emissions are indirect emissions from the electricity, steam, or heating that a company purchases. Essentially, Scope 1 is about what a company emits directly, and Scope 2 is about the emissions related to the energy it consumes.
Scope 3 emissions are important because they often represent the majority of a company's total greenhouse gas emissions. Addressing these emissions can lead to significant reductions in overall impact on climate change, as they include emissions from the entire supply chain and product lifecycle.
Companies can reduce Scope 1 emissions by improving energy efficiency and transitioning to cleaner energy sources. For Scope 2 emissions, they can invest in renewable energy or purchase energy from green sources. To tackle Scope 3 emissions, companies can work with suppliers to improve their practices and encourage sustainable product use and disposal.