What is Carbon Accounting?

TLDR: Carbon accounting is the process of measuring the greenhouse gas emissions associated with a business and its activities. It helps companies understand where emissions come from, track them consistently and identify opportunities to reduce environmental impact over time.

What Is Carbon Accounting And Why Does It Matter?

Carbon accounting, sometimes called greenhouse gas accounting, is the process of measuring the emissions generated directly and indirectly by a business.

It works in a similar way to financial accounting. Instead of tracking money, the business tracks activities that create greenhouse gas emissions, such as electricity use, fuel consumption, travel, purchased goods and waste.

These activities are converted into a standard measurement called carbon dioxide equivalent, or CO2e.

Carbon accounting can help a business understand its environmental impact, identify high-emission activities and create a baseline for future improvements.

For growing businesses, it can also provide useful information for customers, investors, lenders and larger organisations that increasingly ask suppliers for sustainability data.

How Does Carbon Accounting Work?

A carbon accounting exercise usually starts by deciding what parts of the business will be measured.

The company then gathers relevant data, which could include:

• Electricity and gas usage
• Fuel purchased for company vehicles
• Business travel
• Waste generated
• Goods and services purchased
• Transportation and delivery activity

This information is then converted into greenhouse gas emissions using recognised conversion factors.

The final figure is usually expressed in tonnes of CO2e, which makes it easier to compare different types of emissions using one standard measurement.

The UK Government publishes greenhouse gas conversion factors that businesses can use when calculating emissions.

What are Scope 1, Scope 2 and Scope 3 emissions?

One of the most important parts of carbon accounting is understanding the three main categories of emissions.

Scope 1 Emissions

Scope 1 covers direct emissions from sources owned or controlled by the business.

Examples might include fuel burned in company vehicles, gas used in business premises or emissions created directly through manufacturing activity.

Scope 2 Emissions

Scope 2 covers indirect emissions from purchased energy.

For many businesses, this will include electricity bought to power offices, equipment, machinery or other facilities.

Scope 3 Emissions

Scope 3 covers other indirect emissions across the wider value chain.

This can include purchased goods and services, employee travel, transportation, waste, suppliers and the use of products sold to customers.

Scope 3 is often the most difficult area to measure because much of the information sits outside the organisation.

Is Carbon Accounting Compulsory For UK Businesses?

Not every UK business is required to produce detailed carbon accounts.

Certain larger businesses are subject to the UK’s Streamlined Energy and Carbon Reporting framework, often referred to as SECR. This requires qualifying organisations to report information relating to energy use and greenhouse gas emissions.

For many smaller and growing companies, carbon accounting may currently be voluntary.

However, that does not mean it is irrelevant.

Larger customers may ask suppliers to provide emissions information as part of procurement or tender processes. Investors and lenders may also want clearer information about a company’s sustainability plans.

As environmental reporting becomes more common, businesses that already have reliable data may find it easier to respond to these requests.

What Are The Benefits Of Carbon Accounting?

Carbon accounting should not simply be viewed as another reporting task.

Used properly, it can help businesses understand how resources are being used and where improvements might be possible.

For example, measuring emissions could highlight high energy usage, inefficient travel patterns or areas of the supply chain that create a disproportionate environmental impact.

Carbon accounting may help a business:

• Establish a clear emissions baseline
• Identify energy and resource efficiencies
• Respond to customer information requests
• Support environmental targets
• Prepare for future reporting requirements
• Provide more credible sustainability information

The most useful approach is to connect carbon data to commercial decisions rather than collecting information purely for reporting purposes.

What Information Do You Need To Start Carbon Accounting?

You do not necessarily need a complex system to start measuring carbon emissions.

Many businesses already hold useful information through their financial and operational records.

Energy bills, mileage records, fuel costs, travel expenses, supplier information and waste records can all provide a starting point.

The next step is to decide what will be measured, choose a consistent methodology and use recognised conversion factors.

Consistency is important. Measuring the same categories in the same way each year makes it easier to identify whether emissions are increasing or falling.

How Does Carbon Accounting Relate To Financial Accounting?

Carbon accounting and financial accounting are different, but there is a useful connection between them.

Both rely on accurate records, consistent processes and reliable data.

Many of the figures needed for carbon accounting are already captured through normal business activity. Supplier invoices, utility bills, travel expenses and vehicle costs can all provide information for both financial and emissions reporting.

Looking at environmental and financial information together can also help directors understand the wider impact of decisions.

For example, reducing energy consumption may lower both emissions and operating costs. Changing suppliers, vehicles or travel arrangements may also affect both environmental performance and profitability.

Should Your Business Start Measuring Carbon Emissions?

There is no single answer for every company.

If customers are asking for environmental information, sustainability is becoming important during tenders or the business wants to set credible emissions targets, carbon accounting may be worth considering.

A sensible starting point is to understand why you are measuring emissions and what you want the information to help you achieve.

Starting with a smaller, reliable set of data is often more useful than trying to measure everything immediately.

Get Support With Your Business Reporting

As businesses grow, the information directors need can extend beyond traditional year-end accounts.

AGILE Accountants supports owner-managed limited companies and fast-growth businesses with accounting, management information and financial reporting. We can help you build reliable processes, understand your business data and create clearer information to support better decisions.

Speak to AGILE Accountants about strengthening your financial reporting and creating better information to support your growing business.

Frequently Asked Questions About Carbon Accounting

What is the difference between carbon accounting and a carbon footprint?

A carbon footprint is the total greenhouse gas emissions associated with a business or activity. Carbon accounting is the process used to measure, record and track those emissions over time.

Do Small Businesses Need To Measure Carbon Emissions?

Not all small businesses are required to measure carbon emissions, but doing so can be useful when customers, lenders or larger organisations ask for sustainability information.