Every major tech company now claims to be carbon neutral or carbon negative. Microsoft, Apple, Google, Amazon – they’ve all made splashy announcements about their climate commitments. Almost all of them rely heavily on carbon offsets to make the math work.

But what actually is a carbon offset? And does buying them genuinely help the climate, or is it just expensive greenwashing?

The Basic Concept

A carbon offset represents one ton of CO2 that’s either removed from the atmosphere or prevented from being emitted. In theory, if your company emits 100 tons of CO2, you can buy 100 offset credits and be “net zero.”

Offsets come from projects like:

• Renewable energy that displaces fossil fuels
• Forest conservation that prevents trees from being cut down
• Reforestation that plants new trees to absorb CO2
• Direct air capture that literally sucks CO2 from the atmosphere
• Methane capture from landfills or agriculture

The idea is that carbon in the atmosphere doesn’t care where it came from or where it’s removed. A ton of CO2 from a data centre in Virginia is offset by preventing a ton from being released (or removing a ton) anywhere in the world.

Why Tech Companies Love Them

Actually reducing emissions is hard and expensive. You need to change operations, redesign products, rebuild infrastructure. It takes years and costs billions.

Buying offsets is easy. Wire transfer some money, get credits, announce carbon neutrality at your next shareholder meeting. Done.

To be fair, many tech companies are doing both – reducing actual emissions AND buying offsets. But the offsets often make up the majority of their “carbon neutral” claims.

Microsoft’s 2025 sustainability report shows they’ve reduced some operational emissions while growing rapidly. The gap between what they emit and carbon neutrality? Covered by offsets.

The Quality Problem

Not all offsets are created equal. Some are legitimate climate action. Others are essentially scams. The market is full of low-quality credits that don’t represent real carbon reduction.

Additionality is the key question: would this carbon reduction have happened anyway without the offset money? If someone’s getting paid to preserve a forest that was never at risk of being cut down, that’s not additional. The carbon would’ve stayed in those trees regardless.

Permanence matters too. Trees absorb carbon, but they can also burn in wildfires or get cut down later. Is that offset permanent or temporary?

Verification is often weak. Who’s checking that the project actually did what it claimed? Third-party verification exists, but standards vary wildly.

The Sketchy Stuff

Some examples of questionable offsets:

Renewable energy credits for projects that would’ve been built anyway. Wind and solar are often cheaper than coal now in many markets. Paying for a wind farm that was already financially viable isn’t additional.

Forest conservation in areas with no realistic threat of deforestation. “We didn’t cut down this rainforest” isn’t climate action if nobody was planning to cut it down.

Double counting where the same offset gets sold to multiple buyers, or where a country counts it toward national climate goals while a company also claims it.

The investigative journalism on this is damning. Bloomberg and The Guardian have exposed multiple cases of offset projects that look great on paper but do essentially nothing for actual emissions.

The Good Ones

Some offset categories are more legitimate:

Direct air capture is expensive but genuinely removes CO2 from the atmosphere with high permanence. Companies like Climeworks are doing this. It’s not cheap – costs around $600-800 per ton currently.

Methane capture from landfills prevents emissions that would definitely have happened otherwise. Methane is a potent greenhouse gas, so preventing its release has real impact.

High-quality reforestation with long-term monitoring and local community involvement can work. But it requires serious verification and commitment to protecting those trees for decades.

What “Carbon Neutral” Actually Means

When a tech company claims carbon neutrality, read the fine print:

Scope 1 and 2 emissions are direct (they control) and energy (they buy). These are easiest to measure and offset.

Scope 3 emissions are the supply chain and product use. This is usually the biggest chunk and the hardest to address. Many “carbon neutral” claims conveniently exclude Scope 3.

Apple’s carbon neutral claims include Scope 3. Microsoft’s carbon negative commitment includes it. Amazon’s Climate Pledge mostly doesn’t. These aren’t comparable achievements.

The Cynical Take

Carbon offsets let companies continue business as usual while claiming climate leadership. They’re paying someone else to make reductions instead of doing the hard work of transforming their own operations.

It’s a bit like paying someone to diet for you while you keep eating burgers. Sure, someone’s getting healthier, but is that really the point?

The Optimistic Take

Offsets create a market for climate solutions that wouldn’t otherwise be funded. Direct air capture only becomes viable at scale if there’s demand. Forest conservation in developing countries needs funding sources.

If offsets drive investment in carbon removal technology and protect ecosystems, that’s genuinely valuable climate action – even if it also lets tech companies greenwash.

What Should Companies Actually Do?

Priority one should be reducing actual emissions. Redesign products, switch to renewables, improve efficiency. This is harder and slower than buying offsets, but it’s the real work.

Use high-quality offsets for emissions you genuinely can’t eliminate. Focus on permanent removal and rigorous verification. Be transparent about what’s actual reduction versus offsets.

Include Scope 3 in your commitments. That’s where most emissions actually are for tech companies.

What You Should Look For

When a company claims carbon neutrality:

• Do they separate actual reductions from offsets?
• What quality standards do they use for offset verification?
• Do they include Scope 3 emissions?
• What’s their plan for reducing offsets over time?

The best commitments show declining emissions over time with offsets as a shrinking piece of the puzzle. The worst ones are flat or growing emissions covered by increasing offset purchases.

The Bigger Picture

Carbon offsets aren’t inherently good or bad. They’re a tool that can be used well or poorly. The current market has serious quality control problems, and companies are definitely using them for greenwashing.

But in principle, paying for carbon removal or supporting projects that prevent emissions can be legitimate climate action – if done right.

The key is not letting offsets become a substitute for actual operational changes. They should be a bridge to full decarbonization, not a permanent crutch that lets business as usual continue indefinitely.

Most tech companies aren’t there yet. Their offset purchasing is outpacing their emissions reductions. That’s the wrong direction.

Whether this improves or gets worse will determine if carbon offsets become a genuine climate solution or just expensive PR for companies that aren’t serious about change.