Net zero emissions is reached when greenhouse gas emissions and removals due to human activities are in balance. This means that while some emissions may still occur, they are counterbalanced by removing an equal amount of greenhouse gases from the atmosphere. Net zero is the state at which global warming stops.

Key Points

• Net zero requires balancing all greenhouse gas emissions with removals, not just eliminating emissions entirely
• Achieving net zero demands deep emissions cuts—typically reducing emissions by at least 90%—before offsetting remaining emissions

The Paris Agreement aims to limit global temperature rise to well below 2°C above pre-industrial levels and pursue efforts to limit it to 1.5°C

• Net zero differs from carbon neutral: net zero requires substantial emissions reductions first, while carbon neutral allows immediate offsetting without reduction requirements
• Companies and countries measure emissions across three scopes: direct emissions (Scope 1), purchased energy (Scope 2), and value chain emissions (Scope 3)

Understanding Net Zero Emissions

At net zero, carbon dioxide emissions are still generated, but an equal amount of carbon dioxide is removed from the atmosphere as is released into it, resulting in zero increase in net emissions. The concept emerged from climate science research showing that global temperatures will continue rising as long as net emissions remain above zero.

The idea of net zero came out of research in the late 2000s into how the atmosphere, oceans and carbon cycle were reacting to CO2 emissions, recognizing that the carbon cycle continuously sequesters a small portion of human-caused atmospheric CO2 into vegetation and the ocean. Scientists discovered that stabilizing global temperatures requires bringing emissions to net zero, not just reducing them.

Net zero applies to all greenhouse gases covered under international climate agreements, including carbon dioxide, methane, nitrous oxide, and fluorinated gases. Emissions can refer to all greenhouse gases or only to carbon dioxide (CO2). When organizations specify "net zero carbon," they focus solely on carbon dioxide, while "net zero emissions" encompasses all greenhouse gases.

How It Works

Achieving net zero involves a systematic approach:

1. Measure emissions comprehensively: Organizations calculate their greenhouse gas footprint across all activities. The Greenhouse Gas Protocol categorizes emissions into three scopes: Scope 1 covers direct emissions from owned or controlled sources.

Scope 2 emissions are indirect GHG emissions associated with the purchase of electricity, steam, heat, or cooling.

Scope 3 covers all other indirect emissions in the value chain, both upstream and downstream.

2. Reduce emissions drastically: Reaching net zero requires deep cuts in emissions, for example by shifting from fossil fuels to sustainable energy, improving energy efficiency and halting deforestation.

Net zero standards require reducing emissions to more than 90% and then only offsetting the remaining 10% or less to fall in line with 1.5°C targets. This distinguishes net zero from less rigorous approaches that rely heavily on offsets without meaningful reductions.

3. Remove residual emissions: A small remaining fraction of emissions can then be offset using carbon dioxide removal.

Carbon removals scrub carbon directly from the atmosphere. Users of offsets should increase the portion of their offsets that come from carbon removals, rather than from emission reductions, ultimately reaching 100% carbon removals by midcentury to ensure compatibility with the Paris Agreement goals. Removal methods include natural approaches like reforestation and technological solutions like direct air capture.

Why It Matters

Global net human-caused emissions of carbon dioxide need to fall by about 45 percent from 2010 levels by 2030, reaching net zero around 2050, because global warming is proportional to cumulative CO2 emissions, which means that the planet will keep heating for as long as global emissions remain more than zero. Without achieving net zero, climate damages will continue escalating.

As of November 2023, around 145 countries had announced or are considering net zero targets, covering close to 90% of global emissions. However, the credibility of these commitments varies significantly. While 61% of global carbon dioxide emissions are covered by some sort of net zero target, credible targets cover only 7% of emissions. This gap highlights the need for rigorous standards and accountability in net zero commitments.

Related Terms

• Carbon Neutral: Carbon neutrality has more of an emphasis on the removal and reduction of CO2 while the focus of net zero is broader and addresses all greenhouse gases across all industries. Carbon neutral allows for immediate offsetting without requiring deep emissions reductions first.

• Paris Agreement: The Paris Agreement is a legally binding international treaty on climate change that established the framework for global climate action and net zero targets.

• Carbon Removal: Technologies and natural processes that extract carbon dioxide directly from the atmosphere and store it permanently, including methods like direct air capture, reforestation, and enhanced weathering.

Frequently Asked Questions

What's the difference between net zero and carbon neutral?

Net zero requires GHG emissions to be significantly reduced while carbon neutral does not. Net zero carbon emissions requires removal credits to be used to neutralize residual GHG emissions, whereas carbon neutral allows for both GHG removals and emissions avoidance credits. Net zero is generally considered more rigorous and aligned with limiting global warming to 1.5°C.

Can individual companies achieve net zero?

Companies can achieve net zero within their own operations and value chains by reducing emissions across all scopes and using carbon removal to neutralize residual emissions. However, stopping global warming requires collective action—global net zero can only be achieved when emissions and removals balance worldwide. Companies contribute to this global goal through their individual net zero commitments.

Why is 2050 the target date for net zero?

The latest science suggests that limiting warming to 1.5 degrees C depends on CO2 emissions reaching net zero between 2050 and 2060. The 2050 target minimizes the risk of temporarily exceeding 1.5°C warming, while later dates almost guarantee surpassing this threshold before temperatures can be reduced through carbon removal.

Last updated: April 23, 2026. For the latest energy news and analysis, visit stakeandpaper.com.