What Is a Net Zero Business? A Practical GuideWhat net zero actually means, how it differs from carbon neutral, and how UK businesses get there

“Net zero” is one of the most used phrases in business sustainability, and one of the most loosely understood. Plenty of companies say they are working towards it without being able to explain precisely what it means or how it differs from related terms like carbon neutral. So what is a net zero business, in practical terms, and what does it actually take to become one?

This guide explains the definition of a net zero business, how it differs from carbon neutrality, and the practical steps a UK business takes on the path towards net zero.

What Is a Net Zero Business?

A net zero business is one that reduces its greenhouse gas emissions as close to zero as possible, then balances any small residual emissions it cannot yet eliminate by removing an equivalent amount from the atmosphere. The emphasis is on reduction first, removal second.

The phrase comes from the science of climate change. Reaching net zero globally means the amount of greenhouse gas emitted is balanced by the amount removed, stabilising the concentration in the atmosphere. The UK has a legal target to reach net zero by 2050, set out in the Climate Change Act, and the government’s Net Zero Strategy sets out how the economy as a whole is expected to get there.

For an individual business, becoming a net zero business means applying that same principle to its own operations: cutting emissions across the business as far as possible, then dealing with whatever genuinely cannot be removed through carbon removals rather than simply paying to offset emissions that could have been reduced.

Net Zero vs Carbon Neutral

The two terms are often used interchangeably, but a net zero business and a carbon neutral business are not the same, and the difference matters increasingly to customers, investors, and regulators.

Carbon neutral generally means a business has balanced its emissions by purchasing offsets, without necessarily reducing those emissions first. A company can become carbon neutral relatively quickly by buying enough credits to match its footprint, which is why the term has attracted scrutiny over greenwashing. Our guide on how to become a carbon neutral business covers how to make that claim credibly rather than superficially.

Net zero sets a higher bar. It requires deep reduction of actual emissions across the business, with offsetting or removals reserved only for the residual emissions that cannot yet be eliminated. A credible net zero commitment is about changing how the business operates, not just balancing the books with credits. Our post on reducing your business carbon footprint covers the reduction side in practical detail.

The Three Scopes of Emissions

Understanding what a net zero business has to address means understanding where its emissions come from. Greenhouse gas emissions are split across three scopes.

Scope 1 covers direct emissions from sources the business owns or controls, such as gas heating or company vehicles. Scope 2 covers indirect emissions from the electricity and heat the business buys. Scope 3 covers everything else across the value chain, including the supply chain, business travel, and the use of products sold.

For most businesses, scope 3 is the largest and hardest part of the footprint, and a genuine net zero commitment has to address it rather than stopping at the emissions that are easiest to measure. Before a business can set a credible target, it needs to calculate its carbon footprint across all three scopes to understand the full picture.

How a Business Gets to Net Zero

The path to becoming a net zero business is not a single action but a sequence, and the order matters.

It starts with measurement. A business cannot set a meaningful target or track progress without an accurate baseline of its current emissions across all three scopes. That baseline is the foundation for everything that follows.

Next comes reduction, which is where the real work sits. Energy is almost always the largest controllable source of emissions, so switching to renewable electricity, improving energy efficiency, and reducing gas consumption all make a direct difference. Green energy sourcing reduces scope 2 emissions, while measures identified through a commercial energy audit tackle consumption directly. Beyond energy, reducing business travel, engaging the supply chain, and cutting waste all contribute.

Setting a credible target is part of the process too. Many businesses align their target with the Science Based Targets initiative, which provides an independently verified framework for setting reduction goals consistent with climate science. A science-based target gives a commitment credibility that a self-declared one lacks.

Only once reduction has been pushed as far as practical does removal come into play. The residual emissions that genuinely cannot be eliminated with current technology are addressed through carbon removals. This is the smallest part of a credible net zero plan, not the first resort. Longer term, emerging breakthroughs such as battery-free solar fuel could widen the range of emissions that are cut at source rather than offset.

Why Net Zero Matters for Business

Beyond the environmental case, there are increasingly hard commercial reasons to become a net zero business.

Large customers are pushing requirements down their supply chains, asking suppliers for emissions data and reduction commitments as a condition of doing business. A business that cannot answer those questions risks losing contracts to one that can.

Investors and lenders increasingly factor climate risk and sustainability performance into their decisions. Regulatory requirements are tightening, with more businesses falling within mandatory reporting frameworks like SECR each year. And energy efficiency, the foundation of most reduction plans, reduces costs at the same time as emissions, so the work often pays for itself.

For many UK businesses, the question is no longer whether to become a net zero business but how to do it credibly and cost-effectively.

How Catalyst Can Help

Catalyst works with UK businesses on the energy side of net zero, which for most companies is the largest and most actionable part of the journey. We help businesses understand their energy-related emissions, source renewable energy, improve efficiency, and structure procurement in a way that supports a credible reduction path. If you want to understand what a net zero business means for you and where to start, get in touch.

Talk to Catalyst about your net zero journey →

Related service: Carbon Reporting, how Catalyst helps UK businesses measure, report, and reduce their energy-related emissions on the path to net zero.

Related guide: PPN 06/21 Carbon Reduction Plan, what the public sector procurement rule requires and how to produce a compliant plan.