ESG Reporting for PE-Backed Companies: From Request to Deliverable
If a GP or customer has asked you for ESG reporting, you have probably already figured out what they want. The harder question is how to actually produce it. Where the data comes from, who in your organization needs to be involved, and what the output should look like are all critical components of reporting.
That is what this post covers. Not which metrics to track, but how to get from a reporting request to a completed deliverable.
Start with the format, not the data
Before you collect anything, understand what you are being asked to produce. ESG reporting requests come in several different formats and each one requires a different kind of output.
A completed questionnaire is the most common. Your GP or customer sends you a form with specific questions and you fill it in. The output is the completed form. This is usually the most straightforward format because the questions tell you exactly what data you need.
A data template is similar but structured as a spreadsheet. You are given a set of fields to populate with specific numbers. GPs using the EDCI framework typically send something like this. The output is a populated spreadsheet, not a narrative document.
A formal GHG inventory report is a more structured document that presents your emissions data with methodology notes, data sources, and assumptions. Some GPs and customers ask for this specifically, particularly if they need to use your data in their own reporting and need it to be defensible.
A summary ESG document is a short narrative overview of your ESG program, initiatives, and data. Some GPs ask for this as part of an annual portfolio review. It is less structured than a formal report but more narrative than a completed questionnaire.
Knowing which format is expected before you start collecting data saves significant rework. Producing a narrative summary when the GP wanted a data template means doing it again.
Who needs to be involved internally
ESG data does not live in one place. A useful way to think about it is by pillar — environmental, social, and governance — and which internal function owns the data for each.
Environmental
Finance usually holds utility payment data, expense records, and capital goods purchasing information. For a GHG inventory this is often the most important starting point. Facilities or office management holds lease documents, square footage data, and sometimes utility account information directly. If you lease space, the landlord may need to be contacted for building-level energy data. Operations holds data on company vehicles, fuel use, manufacturing inputs, or waste if relevant to your business.
Social
HR is typically the primary source for almost all social metrics: headcount, turnover, benefits, training hours, and diversity data. If you track employee engagement scores or run an annual survey, that data lives here too. Health and safety records, including incident rates, are usually owned by HR or operations depending on your company structure.
Governance
Legal or compliance holds existing policies, governance documents, and board composition information. If you have a code of conduct, a whistleblower policy, or a sustainability policy, legal knows where they are and whether they are current. IT holds information on data security practices, breach history, and relevant certifications like SOC 2 or ISO 27001, which matter for companies handling sensitive customer data.
Process Ownership
Someone needs to own the data collection process end to end. In most private companies at this stage, that person is the CFO, the COO, or a senior finance or operations manager. It is rarely a dedicated sustainability role because most companies do not have one yet.
Whoever takes it on needs three things: access to the right people across the business, enough seniority to get responses when they follow up, and a clear deadline to work toward. Without seniority, data requests get deprioritized. Without a deadline, they get deferred indefinitely.
If the request is coming from a GP, frame the internal ask the same way. This is an investor reporting requirement, it has a deadline, and you need the data by a specific date. That framing moves things faster than a general sustainability request.
For companies bringing in outside support, a fractional ESG consultant typically owns the process architecture, including the data map, the tracker, the timeline, and the output format. The internal point person owns the relationships and the follow-up. That division works well because it plays to what each party is actually good at.
How to collect the data without creating a project
The most common mistake in a first ESG reporting cycle is treating data collection as a separate workstream that runs alongside the business. It creates overhead and delays.
A more practical approach is to map each data point to its source first, then make targeted requests to the right people with specific asks and deadlines. Rather than sending a general "we need ESG data" request to your team, send finance a request for twelve months of utility payments for each office location by a specific date. Send HR a request for headcount by gender and annual turnover figures by the same date.
Specific requests get responses. General ones get questions.
Give people context too. Most employees have not been asked for this kind of data before. A one-sentence explanation, "We are completing our annual ESG report for our investor and need this data by the end of the month,” removes the uncertainty and reduces back and forth.
Track the gaps from the start
Build a gaps tracker at the beginning of your first reporting cycle, not after. A simple spreadsheet with five columns works: the data point being requested, the internal owner, the status (have it, requested, not available), the gap approach if applicable, and the date it was resolved.
Run through it in your weekly check-ins during data collection. It makes gaps visible early, keeps owners accountable, and gives you a clear record of how you handled incomplete data.
The tracker also becomes the foundation of your data map for next year. Once the first cycle is complete, update the status column and you have a starting checklist for the following year.
What to do when the data is not there
Gaps are normal in a first reporting cycle. For emissions accounting, the GHG Protocol has established approaches for handling incomplete data. Industry averages or spend-based estimates typically fill gaps where primary data is not available. Data gaps are a natural consequence of growing businesses. A company that moved to a new HR platform or acquired a European unit can disclose related gaps.
Document every gap and the approach used to address it. A GHG inventory that notes "electricity data for the Austin office was unavailable for Q1; estimated using the office's square footage and regional grid average" is more credible than one that silently omits the Austin office or presents a number without explanation.
GPs and customers who receive a lot of ESG data know it is imperfect in a first year. What they are evaluating is whether the approach is reasonable and consistent. Transparency about gaps is better than false precision.
What the output actually looks like
Once the data is collected, the output depends on the format requested. For a questionnaire or data template, this is largely a matter of populating the fields accurately and checking for consistency. For a formal GHG inventory report, there is more structure involved. The final will include methodology documentation, emission factor sources, calculation assumptions, and a summary of results.
A few things to check before submitting anything:
Numbers are internally consistent. If your Scope 1 and 2 emissions total appears differently in two places in the same document, that will raise questions
Units are correct and consistent. Metric tons of CO2 equivalent is the standard unit for GHG data. Mixing units or using the wrong ones is a common error.
The reporting year is clearly stated. Data needs a reference year to be meaningful.
Run a post mortem after the first cycle
Once the output is submitted, take 30 minutes to debrief while the process is still fresh.
What data was hardest to get and why? If utility data from the landlord took three weeks, start that request six weeks earlier next year. If HR turnover data was easy, note the contact and format so you do not have to figure it out again.
Where did you have to estimate or fill gaps? Document every gap, what you used to fill it, and whether primary data might be available next year. Some gaps close over time as internal tracking improves. Others are structural.
What took longer than expected? Data collection almost always takes longer than the analysis. If one pillar was slower than the others, find out whether it was a data availability problem or a follow-up problem. They have different solutions.
The output of the post mortem should be two things: an updated data map with next year's contacts, timelines, and known gaps noted, and a short list of process improvements. One page is enough.
Track the timing and cycles of requests
As part of the post mortem, note when every request arrived during the year. When did the GP send the annual questionnaire? When did the customer RFP land? Was there a deadline that caught you off guard?
Most GP ESG requests follow a predictable cycle tied to their LP reporting calendar. If your GP asks for data every February, start data collection in November. If a major customer sends supplier questionnaires every April, have your standard responses ready in March.
Build a request calendar alongside your data map. For each recurring request, note who sends it, when it typically arrives, when the deadline is, and how long data collection took last time. After two or three cycles this becomes one of the most useful planning tools you have. It turns ESG reporting from a reactive scramble into a predictable annual process.
If you are in your first year and do not have historical timing data yet, ask your GP or customer directly when they expect to send their next request. Most will tell you. That one piece of information lets you start planning rather than waiting.
What annual reporting looks like after the first cycle
The first cycle is the hardest. Once you have done it once, the process becomes much more routine.
Most companies that handle annual ESG reporting well have reduced it to a defined process that runs for four to six weeks each year. The data sources are known, the contacts are established, and the output format is set. Year two takes a fraction of the time year one did.
If you have received an ESG reporting request and want help working through what it requires and how to produce it, get in touch or learn more about fractional ESG support and carbon footprint consulting.
Read more about private company ESG strategy
If a GP or customer has asked you for ESG reporting, you have probably already figured out what they want. The harder question is how to actually produce it — where the data comes from, who in your organization needs to be involved, and what the output should look like.