Sustainability ranks last. That’s your opening.
Based on the ICEN Annual Benchmarking Report 2026/27.

A new survey of in-house corporate event professionals has an uncomfortable finding for anyone in our corner of the industry. Sustainability comes last.
The ICEN Annual Benchmarking Report 2026/27 asked 115 corporate event professionals to rank their planning priorities. Sustainability, which it defines as CO2 tracking and waste reduction, came 9th out of 9. Only 16% rated sustainability requirements and reporting as a significant challenge for the next 12 months. It was the lowest of every challenge listed.
It would be easy to read that as “nobody cares”. We think the rest of the report says something more useful.
The real problem is measurement
Look at what teams are worried about. 85% rate budget pressure and cost scrutiny as a major challenge. 82% say the same of proving ROI and commercial value. The objection event teams hear most often is “we can’t measure the ROI”, reported by 45%.
Senior leaders aren’t the obstacle. 79% of respondents say their senior stakeholders believe strongly in the value of events. But only 13% find budgets easy to approve. The report’s diagnosis is that events have a currency problem, not a value problem. Leaders agree events matter, but they won’t sign off without numbers they trust.
Most teams are stuck at the same point. 83% measure registrations or attendance, and only 34% attribute revenue. Attendance tells you who turned up. It doesn’t tell finance what the event delivered.
Sustainability has the same problem
Carbon data for events has a lot in common with ROI data. It’s often collected late, can be estimated, and reported once the event is over. It rarely uses a method the finance team recognises. That makes it easy to rank last, because it feels like an extra task rather than a source of evidence.
The report points to what changes this, and it applies to carbon as much as to pipeline:
- Write the definition down. Teams with a documented engagement scoring model rate their pipeline evidence 3.71 out of 5. Teams without one rate it 2.82. Informal tracking sits close to having no model at all.
- Connect the data. Teams whose event data flows into their CRM rate their evidence 3.78. Teams moving data by hand rate it 2.48.
- Measure the whole portfolio. Easy budget approval is 22% for teams running 30 or fewer events a year and 4% for teams running 60 or more. The report’s answer is one set of measures applied to every event, rather than a separate story for each.
The report calls for a standard rather than a tool. A shared, documented method is what makes numbers credible to the people who control budgets. We agree.
What this means for responsible events
We read the findings this way.
Stop using sustainability as a separate agenda. If carbon and waste (not the most exciting of factors) rank last in a list of priorities, a standalone sustainability pitch will keep ranking last. The priorities that rank first are content quality, ROI and measurement, and delivering on wider business KPIs. ESG (NOT carbon) data earns its place by serving those: consistent, comparable and defensible evidence about what an event cost and what it delivered.
Treat carbon AND social value like any other event measure. You’re already delivering social value in delivering events as they are. You’re just not measuring it and showing it as brand-generated value. Both social and carbon should use an agreed method and be reported after every event. It should be comparable across a programme, and someone should own it. That is the same advice the report gives for ROI.
Plan for the portfolio, not the one-off. For teams running dozens of events a year, a single flagship impact report doesn’t help. A consistent method across both factors every event does – and demonstrates your team and event value.
Expect the gap to close. The report shows sustainability reporting as a low-ranked skill and training budgets as scarce, with only 19% of organisations running a structured programme. Regulation and client disclosure requirements aren’t waiting for event teams to catch up. Teams with a measurement habit in place will be better placed when the questions come. Which they will. Seen it from several global corporates this month alone.
A note on the data
This was a small sample of 115 respondents, weighted towards finance and banking (47%) and technology (26%), and to the UK (52%). The sustainability question was narrow, so it may understate interest in wider reporting requirements. So the report is not a verdict on the whole market.
The takeaway
The profession is asking for defensible numbers. Sustainability sits low on the list partly because it hasn’t yet been presented as one.
At event:decision, that’s the case for measuring carbon and social value as rigorously as anything else: a documented method, consistent across events, and clear enough to stand up in a budget conversation. When teams can show that, a sustainable and responsibly delivered program stops being an extra and starts being part of the evidence.
If you’re building a measurement framework for your events programme, we’d be glad to talk.







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