ESG data management: what to collect and how to use it
Written by: Will Bourns, Solutions Manager – Impacts and Dependencies | Last updated: 27.10.2026
A business can collect thousands of sustainability figures and still struggle to explain its performance. Energy records sit with Operations, purchasing information with Finance and Procurement, and workforce data with HR. Without agreed definitions and clear ownership, bringing these sources together becomes a recurring challenge.
Effective ESG data management starts with a purpose. That means understanding how the business affects people and the environment, and how it depends on resources such as energy, water, materials and its supply chain, alongside measuring performance against targets. With that understanding in place, data can support reporting requirements and decisions about where to act.
What is ESG data?
ESG stands for environmental, social and governance. ESG data includes numbers, explanations and evidence about an organisation’s practices, impacts and performance. Environmental information covers energy, emissions, water, waste and materials. Social information may include workforce composition, employee turnover, safety and human rights. Governance information covers oversight, policies, training and how concerns are addressed.
ESG data and sustainability data overlap, with terminology varying between organisations. Neither should be confused with ESG ratings, which interpret company information using a provider’s methodology.
Why does a company need ESG data?
Relevant data establishes a baseline and enables progress against targets to be reviewed. It also supports disclosures to customers, investors and other stakeholders. The information required depends on the organisation’s activities and applicable requirements.
Its value extends to everyday decisions. Energy data can identify sites needing investigation; workforce information can reveal turnover patterns; purchasing records can help prioritise supplier engagement. Leaders need context to judge the response. Even incomplete information can support decisions when its limitations are understood.
Effective ESG data management starts with a purpose. With that understanding in place, data can support reporting requirements and decisions about where to act.Will Bourns, Solutions Manager Impacts and Dependencies
Which ESG data should your organisation collect?
Start with material topics: the significant sustainability impacts, risks and opportunities associated with your operations and value chain. Work backwards from your targets to identify the information needed to establish a baseline and measure progress. Then map reporting requirements and stakeholder requests, collecting shared information once wherever possible.
Several assessments help determine which information matters. A materiality assessment identifies the topics most significant to the business and its stakeholders. Carbon measurement shows where emissions arise across operations and the value chain, pointing to the activity data needed for the largest sources. Nature assessments reveal where operations and suppliers affect or rely on ecosystems, for example through water use or land use. Supply chain analysis identifies the purchased goods, commodities and suppliers carrying the greatest environmental and social risk. Together, these assessments focus collection on information that will inform decisions, rather than everything that could be measured.
Define each measure’s unit, reporting period, organisational boundary, source and calculation method. For intensity measures, specify the denominator, such as emissions per unit produced.
For carbon accounting data collection, distinguish inputs from results. Electricity consumption in kWh is source data; associated greenhouse gas emissions are calculated using an appropriate emissions factor. Scope 3 data collection may draw on purchasing expenditure, product quantities or supplier emissions information, depending on the calculation method[1].
A simple data register makes responsibilities visible. These examples are a starting point, not a universal checklist.
Data required
Likely owner
Where to find it
Energy and fuel consumption
Operations or Facilities
Utility bills, meter readings and fleet records
Purchasing expenditure and quantities
Finance and Procurement
Accounting and purchasing systems
Workforce and commuting information
HR
HR records and employee surveys
Waste volumes and treatment routes
Operations or Facilities
Waste contractor reports
How do you manage ESG data across a business?
Identify who supplies each dataset, who checks it and who approves the result. Start with existing systems and records. Give contributors consistent definitions and collection schedules that reflect reporting deadlines and management needs.
Review submissions for missing entries, duplicates, inconsistent units and incomplete coverage. Investigate unexpected changes: a sharp fall in energy consumption could reflect efficiency improvements, but it could also mean missing bills or a site omitted from reporting. Understanding the difference prevents an apparent improvement from becoming a misleading conclusion.
Retain supporting evidence and record assumptions, estimates and limitations. Prioritise improvements where gaps could most affect decisions. Protect sensitive information through appropriate access and aggregation. Internal review prepares data for reporting; independent assurance is a separate process.
Simply Sustainable used a bespoke collection tool to gather data against WSH’s strategic targets and worked with stakeholders across its businesses to explain performance and challenges. This demonstrates how data collection supports both accountability and useful reporting.
A spreadsheet with clear controls may suit a simple process. As contributors and reporting needs grow, repeated consolidation, version confusion and difficulty tracing evidence can indicate that dedicated technology would help.
Choose a platform around your requirements, considering compatibility with existing systems, permissions, evidence storage, review workflows and ease of use. Establish definitions and responsibilities first.
Digital reporting also makes consistent data definitions increasingly important. For organisations reporting under the CSRD, work on XBRL tagging of European Sustainability Reporting Standards disclosures illustrates this direction. Tags make reported information readable by software, supporting analysis and comparison. Preparing for this starts with clearly defined measures, consistent units and traceable evidence[2].
For emissions measurement, Simply Carbon combines our emissions calculator platform with expert support to simplify the process and build confidence in the footprint. Sustainability expertise remains essential when setting boundaries, assessing assumptions and interpreting results. A platform helps organise and calculate information; people determine what the results mean for the business.
How do you use ESG data to improve decisions and reporting?
Compare results with baselines and targets, then investigate the reasons for change. Separate operational improvements from changes in business size, reporting coverage or methodology.
For example, increased waste at one site should prompt checks of purchasing, production and disposal records. If overordering is contributing, the site manager can adjust ordering practices and review waste volumes in subsequent months. This connects a metric to investigation, an accountable action and a follow-up review.
Report achievements alongside missed targets and uncertainties. Use each reporting cycle to refine definitions, close important gaps and remove unnecessary requests.
Build a clearer picture of sustainability performance
Begin with your priority measures, assign owners and establish how results will inform decisions. Our impacts and dependencies solutions help you understand where your business affects and relies on people and nature, from materiality and nature risk to supplier engagement, and connect that understanding with clear, evidence-based disclosures. If emissions measurement is your immediate challenge, explore our carbon footprinting and GHG accounting services or speak to our team about Simply Carbon, which pairs our emissions calculator platform with expert support.
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