Carbon offsets can play a role in climate strategy, especially for residual emissions that are genuinely hard to remove. The problem starts when offsets become a substitute for operational change.
For investors, offset reliance is a useful warning sign. It can reveal whether a company is transforming its business or simply buying time while continuing with high-emission activity.
Why offset reliance matters
An offset is a credit intended to represent an emissions reduction or carbon removal somewhere else. In theory, that can help finance useful climate projects. In practice, quality varies widely, and a credit may fail to deliver the climate benefit implied by the buyer's claim.
Investor risk appears in four places:
- Execution risk: the project may not deliver the promised benefit.
- Permanence risk: stored carbon may be released later.
- Reputation risk: customers or regulators may challenge the claim.
- Transition risk: the company may delay real emissions cuts.
That does not mean every offset is bad. It means investors should separate limited, transparent use from claims that depend on large volumes of cheap credits.
1. Find the reduction-to-offset ratio
The first task is simple: work out how much of the company's claim comes from cutting emissions and how much comes from credits.
Look for disclosures that show:
- Gross emissions before offsets
- Emissions reductions achieved since the baseline
- Credits purchased or retired
- Whether credits are avoidance credits or removal credits
- Which scopes the credits relate to
If the company reports "net" emissions without a clear gross figure, you cannot see the underlying transition.
2. Test whether offsets are residual
High-quality net-zero strategies usually reserve credits or removals for emissions that remain after deep reductions. A weak strategy may use credits to balance emissions that could be reduced through efficiency, renewable energy, cleaner inputs, supplier changes, or product redesign.
Ask whether the company explains why the offsetted emissions are hard to abate. If it cannot, the offset may be doing too much work.
3. Check the type of credit
Not all credits are equivalent. Some aim to avoid emissions, such as protecting a forest from being cleared. Others aim to remove carbon dioxide from the atmosphere, such as durable storage or verified nature restoration.
Useful disclosures should identify:
- Project type
- Registry or standard
- Vintage year
- Country or region
- Verification status
- Whether the credit has been retired
The more generic the disclosure, the less confidence investors should place in the claim.
4. Compare offsets with capital expenditure
Offset purchases are often small compared with the capital expenditure needed to decarbonise a business. That makes them tempting as a public-relations tool.
Read the annual report and investor presentations. If management is still funding long-lived high-carbon assets while relying on offsets to support climate language, the transition case is weak.
The useful investor question is: where is the money going?
5. Watch for "avoided emissions" claims
Avoided emissions can be useful in some contexts, especially for companies selling products that help customers reduce emissions. But they should not be confused with reductions in the company's own footprint.
A renewable energy company may help avoid fossil generation elsewhere, but it still needs to report its own operational and supply-chain emissions. A software platform may help customers optimise energy use, but that does not erase data-centre emissions or hardware supply-chain impacts.
Avoided emissions are context, not a free pass.
Offset reliance red flags
Treat these as reasons for further due diligence:
- Net emissions are reported but gross emissions are hard to find.
- The company claims carbon neutrality without disclosing credit volumes.
- Offsets cover emissions that could plausibly be reduced directly.
- Credit quality is described only in generic terms.
- The company has no near-term absolute reduction target.
- Offsets are promoted more heavily than operational changes.
- Capital expenditure still supports high-emission growth.
A better standard
The strongest companies use offsets sparingly, explain them clearly, and prioritise direct reductions. They disclose the messy details because they know investors need to distinguish a credible transition from a polished claim.
For a quick scoring tool, use the EcoInvestor Corporate Greenwashing Checklist and focus on the sections covering Scope 3, offset dependence, interim targets, and capital allocation.
Sources
- The Core Carbon Principles - Integrity Council for the Voluntary Carbon Market
- Corporate Net-Zero Standard - Science Based Targets initiative
- Green Claims Code - Competition and Markets Authority
- Voluntary carbon markets - Principles for Responsible Investment