Carbon Neutral, Net Zero, and Climate Positive: What's the Difference?
These terms are often used interchangeably, but they mean different things. Carbon neutral (or carbon neutrality) means that an entity's net CO2 emissions are zero — typically achieved by measuring emissions and purchasing carbon offsets or credits to 'balance' them. The key distinction is that carbon neutrality allows unlimited emissions as long as they are offset.
Net zero is a more ambitious concept. It requires reducing emissions as much as possible first (typically by 90% or more from baseline), and only using carbon removal (not avoidance offsets) for the remaining residual emissions. The Science Based Targets initiative (SBTi) defines net zero as achieving deep decarbonisation across the value chain, with any remaining emissions balanced by permanent carbon dioxide removal.
Climate positive (or carbon negative) goes further still: removing more CO2 from the atmosphere than is emitted. Very few organisations credibly claim this status. Microsoft has committed to becoming carbon negative by 2030 and removing all historical emissions by 2050, which is one of the most ambitious climate pledges by a major corporation.
The practical difference is significant. A company can claim 'carbon neutral' status simply by buying cheap offsets while continuing to increase its actual emissions year on year. A credible net zero commitment requires demonstrated emission reductions, typically validated by third parties like the SBTi, with a clear pathway and interim targets.
How Carbon Offsetting Works — and Its Limitations
Carbon offsetting is the mechanism most commonly used to achieve carbon neutrality. An organisation calculates its emissions (or a product's lifecycle emissions), then purchases carbon credits representing an equivalent amount of CO2 that has been reduced or removed elsewhere. One credit typically represents one tonne of CO2e.
Offset projects fall into two broad categories. Avoidance offsets prevent emissions that would otherwise have occurred — for example, protecting a forest from deforestation or funding renewable energy in developing countries. Removal offsets physically take CO2 out of the atmosphere — through tree planting, soil carbon sequestration, or technological solutions like direct air capture.
The quality problem is severe. A 2023 investigation by The Guardian, Die Zeit, and SourceMaterial found that over 90% of rainforest offset credits certified by Verra (the world's largest certifier) were likely 'phantom credits' that did not represent genuine carbon reductions. Common issues include: additionality failures (the project would have happened anyway), overestimated baselines (exaggerating the threat of deforestation to claim larger savings), permanence risks (a planted forest can burn down or be logged), and leakage (protecting one forest area while deforestation shifts to another).
Despite these problems, high-quality offsets do exist. Gold Standard and Plan Vivo certified projects tend to have stronger verification. Direct air capture with geological storage (offered by companies like Climeworks) provides permanent, measurable removal — but costs $600-1,000 per tonne compared to $5-15 for forest-based credits. The price difference partly explains why companies overwhelmingly choose cheap credits despite quality concerns.
How to Evaluate Carbon Neutral Claims
When a company or product claims to be 'carbon neutral,' several questions can help assess the credibility of that claim. First, examine the scope: does the claim cover the entire value chain (Scope 1, 2, and 3 emissions) or only direct operations? A company claiming carbon neutrality for its offices while ignoring the emissions from manufacturing, shipping, and product use is presenting an incomplete picture.
Second, look at the trajectory: is the company actually reducing its emissions, or just buying more offsets each year? A credible carbon neutral claim should be paired with a reduction pathway. If a company's actual emissions are rising while it maintains carbon neutral status through increasing offset purchases, this is a significant red flag.
Third, examine the offset quality: what type of credits is the company using? Forest-based avoidance credits are the cheapest and most problematic. Technology-based removal credits (biochar, direct air capture) are more expensive but more reliable. Does the company disclose which offset projects it supports? Are they independently verified?
Fourth, check for independent verification: has a third party audited both the emissions calculation and the offset purchases? Standards like PAS 2060 (the international standard for carbon neutrality) require independent verification. Companies that self-declare carbon neutrality without external audit provide less assurance.
Finally, look for transparency: does the company publish detailed emissions data, describe its methodology, name its offset providers, and set interim reduction targets? Transparency is not a guarantee of accuracy, but a lack of transparency is a reliable indicator that claims should be treated with scepticism.
The Future of Carbon Neutral Claims
The landscape for carbon neutral claims is shifting rapidly. The EU's Green Claims Directive will require companies to substantiate environmental claims with scientific evidence and prohibit claims based solely on carbon offsets. France has already banned companies from advertising products or services as 'carbon neutral' without meeting strict conditions. The UK's ASA has ruled against several companies' carbon neutrality advertising.
The Science Based Targets initiative has stopped validating corporate carbon neutral claims, focusing instead on net zero targets that require actual emission reductions. The Voluntary Carbon Markets Integrity Initiative (VCMI) has published a claims code that limits what companies can say about their offset purchases, requiring demonstrated emission reductions before offsets can supplement reduction efforts.
For consumers, this regulatory evolution means that over the next few years, carbon neutral claims will either become more meaningful (backed by genuine evidence and reductions) or disappear from marketing as companies find them too risky to make without substantiation. In the interim, the most reliable approach is to focus on companies that demonstrate actual emission reductions through transparent reporting, rather than those that simply buy offsets to maintain a carbon neutral label.
Investors are also driving change. BlackRock, the world's largest asset manager, has stated that it expects companies to disclose credible transition plans. Climate Action 100+, a coalition of investors managing over $68 trillion in assets, engages with the world's largest emitters to ensure their climate commitments translate into action. This financial pressure makes greenwashing through hollow carbon neutral claims increasingly risky for publicly traded companies.