Carbon Credits vs. Carbon Offsets: What's the Difference

Joseph Coppolino | July 15, 2019 | 4 min read

What Are Carbon Credits

arbon credits are a system of purchasing and trading carbon emissions has developed as one way to limit global atmospheric CO2 levels. The term carbon credit usually refers to a tradable certificate or permit that shows a company, industry, or country, has paid to remove a certain amount of carbon dioxide from the atmosphere. This certificate gives them right to emit 1 tonne of carbon dioxide or the equivalent amount of a different greenhouse gas (source).

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How do Carbon Credits Work

The Kyoto Protocol, which came into effect way back in 2005, established a maximum amount of greenhouse gas emissions that could be released both globally and nationally.

In the years that followed various national and international cap-and-trade systems were put in place, giving countries and businesses a limit (ie. a cap) of how much greenhouse gas they're allowed to emit.

If a country or business produces fewer emissions than their cap they are afforded a credit (one credit being equal to one tonne of CO2-equivalent emissions saved) which can be sold to other organizations looking to produce emission above their given limit.

The trading of carbon credits has basically made them a form of climate currency. Just like global currencies, they are subject to supply and demand, and can be bought and sold through a cap-and-trade market.

What is the Difference between carbon credits and carbon offsets?

One of the biggest differences between a credit and an offset is that the former is mandatory and the latter voluntary.

Carbon offsets are also measured by tonne of CO2-equivalent, but instead of representing when a company emits less carbon than their limit, they are created when a business decides to invest in something that reduces greenhouse gas emissions outside of their everyday operations. These investments are known as carbon projects.

These projects typically (but not always) take place in lower-developed countries and involve building wind turbines, supporting solar farms, or investing in forest preservation and reforestation efforts!

Essentially, carbon emitters can invest in offsets instead of actively reducing their own emissions. The principle behind this being it doesn’t matter where on the planet emissions are coming from, as long as there is an overall net reduction.

These offsets, similar to their credit counterparts, can be bought and sold like currency. However, the voluntary offset market is largely unregulated so knowing what you’re buying is important.

Wind Turbines

What to Consider When Considering Offsets

Because of limited regulation there are a number of factors to consider when purchasing carbon offsets to make sure what you're paying for is beneficial for the environment.

First, make sure you are getting a certified offset. Much like third-party organizations are needed to ensure organic food is actually organic, or that sustainably caught seafood is in fact sustainable, carbon offsets need to meet certain standards as well.

As the market for carbon offsets grows, so do the number of organizations offering this certification. They make sure offsets aren’t sold twice and the reduction in emissions isn’t causing an increase somewhere else.

Some popular standards organizations are The Gold Standard, VCS, and Green-e. (For a more extensive look at offset certification, check out WWF’s guide comparing some of the most popular standards).

Offset Certification Organizations

Another aspect to consider when purchasing offsets is ‘additionality,' which means the offset project is only made possible by your investment. More simply, would the project happen if you didn't pay for it?

For example, if a solar farm is already fully funded by private investors and then decides to sell carbon offsets to increase profitability, those offsets would not be considered additional because no real reduction in overall emissions is being created.

On the other hand, if the same solar farm wants to expand and decides to sell offsets to fund the expansion, those offsets would be additional as they represent fewer emissions being produced by other forms of energy production (such as the burning coal or gas).

Who's Using Offsets?

Carbon offsets are definitely a hot topic for businesses looking reach net-zero or even net-negative emissions. Major companies like Microsoft, General Motors, and Delta Airlines are investing in offsets to reduce their impact on the planet.

The ride sharing application Lyft stands out in its efforts to use carbon offsets. Despite being a company whose job it is to put cars on the road, inevitably pumping more greenhouse gases into the atmosphere, Lyft has managed to make every ride shared through the app carbon neutral.

Lyft pulled this off by investing heavily in renewable energy, reducing emissions in the car manufacturing process, and, of course, supporting reforestation projects. 

Carbon Offsets Can Make an Impact

All the interest from companies is making the offset market boom.

By 2018, the carbon offset market had grown 140 times larger in just the last decade. And since 2000 when carbon offset markets really took off, offset projects have reduced emissions by more than 437 million metric tonnes (CO2 equivalent).

Carbon Offset Issuances and Retirements

Courtesy of Forests Trends, Ecosystem Marketplace

Unfortunately, that amount only makes up a tiny fraction of total global emissions (totalling 37.1 billion tonnes in 2018), but carbon offset programs are a positive step towards bringing that number down. Limiting the production of greenhouse gases and working on projects to reduce carbon emissions overall can be a major part of the solution to mitigating climate change.

At the very least, carbon credits and offsets are an easy way for businesses to monitor their carbon output and make an effort to stay within a reasonable emissions limit. In combination with other sustainability efforts, carbon offsetting shows that a business is willing to do what it takes to ensure the environment is receiving the best possible treatment.

If you are looking to offset your carbon emissions, you can do so by planting trees to offset your carbon!

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  • Purchase carbon offsets and reduce your carbon footprint!

    Most simply, a carbon offset is a reduction of carbon emissions to compensate for emissions made elsewhere. Carbon offsets help lower your carbon impact in a way that is quantified and verified.

    One Tree Planted's carbon offset program ensures your carbon reduction efforts are registered, while also providing benefits for nature, people, and biodiversity. Your purchase will increase total carbon stores via protection of a mature forest, conservation-based forest management, and regular audits to measure carbon. Other benefits include preservation of local water quality, habitat for wildlife species, and a healthy forest that's open to the public for nature-based recreation. In partnership with Bluesource and The Nature Conservancy. 16-20 tons is the average annual emissions for someone in North America.
  • This carbon offset project works with the Nature Conservancy in Vermont and their recently conserved Burnt Mountain Natural Area, a 5,408-acre forest parcel that will remain "forever wild" for the benefit of nature and people. Located near state parks, privately owned and conserved lands, and the Long Trail State Forest, this project helps create an 11,000-acre block of continuous forest that will be protected in perpetuity. Burnt Mountain will be maintained and managed as part of The Nature Conservancy in Vermont’s 58-natural area network which is open to the public for hiking, fishing and hunting, while retaining and improving ecological integrity.
  • A personalized certificate (see gallery) indicating your purchase of offsets. The certificate verifies that your purchase will be registered with the American Carbon Registry. One Tree Planted retires carbon credits through this process on a monthly basis and we will send you the registration number via email within approximately 30 days of your purchase.
  • While there is no substitute for directly reducing your carbon emissions, purchasing offsets - and thereby protecting a mature forest - can help you reduce your carbon footprint, and even go carbon neutral.

    Carbon offsets are voluntary buy-ins that allow you to trade your hard earned dollars for the ability to offset some or all of your carbon footprint. In this case, it is through conserving large swaths of forest in order to ensure that a quantifiable amount of carbon will be sequestered by this forest. In addition to carbon-specific benefits, you are also protecting a natural forest to continue providing health and habitats for local wildlife and residents.


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