Turn event data into sustainability reporting you can defend.
EventZero structures emissions data across the seven categories that matter for events, applies current international emissions factors, and produces reporting your stakeholders can scrutinise. Set up your first event today.
No credit card required. Full access for 14 days.
- Aligned to ISO 20121 and the GHG Protocol
- Seven emissions categories built for events
- International emissions factors updated annually
- Audit-ready outputs for boards and procurement panels
Most event sustainability reporting falls apart under questioning
The data exists. It sits in venue invoices, delegate travel bookings, catering orders, freight manifests and supplier emails. By the time an event closes, it is scattered across inboxes and spreadsheets in formats that will not reconcile.
That creates three problems.
The numbers cannot be traced
A figure in a spreadsheet is only as credible as the method behind it. When a board member or an auditor asks how it was calculated, most teams cannot show the working.
Travel is the biggest number and the hardest to collect
Across in-person events, travel commonly represents 60 to 80 percent of total emissions, with the higher end typical where attendance is international. It is also the category most often estimated or left out.
Measurement stops at the report
A completed footprint tells you what happened. It rarely tells you what to change next time, or whether last year's decisions actually worked.
What you will have by the end of the trial
The trial is not a tour of the product. It is a working measurement of a real event.
- 1
A complete event footprint.
One real event measured across energy, travel, accommodation, food and beverage, freight, production materials and waste.
- 2
A breakdown you can interrogate.
Emissions by category, by venue and by supplier, with the activity data and factor applied visible behind every figure.
- 3
The two or three decisions that matter.
The categories driving most of your footprint, and where reduction effort is worth spending.
- 4
Reporting you can circulate.
Output structured for the people who will question it, whether that is a sustainability lead, a client, a board or a procurement panel.
- 5
A view of what happens at scale.
A portfolio dashboard showing how one event sits against a whole program, which is where the value compounds.
Most teams have their first event measured well before day 14.
Three steps
- 1
Set up your event
Create the event, set its scope and add attendee and venue detail. No preparation required beyond what you already hold.
- 2
Bring in the data
Enter, upload or request data across all seven categories. Suppliers can be invited to submit their own data on paid plans, which removes the chasing.
- 3
Measure and act
EventZero applies current emissions factors, structures the result, and identifies where reduction effort will have the most impact.
No credit card required.
Three ways teams use EventZero
In-house event and sustainability teams
You are accountable for numbers that will be reported upwards, and increasingly disclosed. EventZero gives you a portfolio-wide view of every event in your program with a method you can put in front of a board without qualification.
Event agencies and production companies
Clients are asking for sustainability reporting during the proposal stage, and the ones who cannot answer are being screened out. EventZero lets you offer measurement and reporting as a service across every client event, without adding headcount.
Government and public sector
Procurement criteria and public accountability leave no room for estimates that cannot be substantiated. EventZero produces transparent, standards-aligned reporting designed for scrutiny, with the methodology documented.
Seven categories, built for events
Generic carbon platforms were built for corporate operations. Events emit differently, across categories that appear and disappear in a matter of days.
Energy.
Venue electricity, generators, lighting and AV load.
Travel.
Delegate, speaker and crew air travel and ground transport.
Accommodation.
Hotel nights across delegates, crew and speakers.
Food and beverage.
Catering by menu composition, with waste accounted for.
Freight.
Equipment transport, logistics and courier movements.
Production materials.
Staging, signage, print and fabrication.
Waste.
Waste to landfill, recycling and diversion rates.
See how each category is measured
Built to be questioned
Credibility in this space comes from method, not claims.
- Standards-aligned.
- Reporting is structured to ISO 20121 and the GHG Protocol, with event emissions treated within a Scope 3 framing where that applies to your organisation.
- Current factors.
- EventZero maintains an international emissions factor database, updated twice a year. Outdated factors are one of the fastest ways to lose an audit conversation.
- Transparent working.
- Every figure shows its activity data, its factor and its source. Estimated values are flagged as estimates rather than presented as measured.
What you get in the trial
Included in the 14-day trial
Available as soon as you start.
- Full event setup and measurement
- All seven emissions categories
- Automated calculations using current factors
- Event-level dashboard
- Portfolio summary dashboard
Available on paid plans
Not in the trial — add any of these when you upgrade.
- Supplier portal and supplier data requests
- Reduction tracking year on year
- Downloadable PDF reporting and CSV bulk upload
- AI insights
- Integrations with event management systems
Plans start at $149 per month. No credit card is required to start, nothing is charged during the trial, and you decide what happens at the end of it.
Before you start
Measure one event. Then decide.
Fourteen days is enough to measure a real event, see where the footprint sits, and know whether the reporting stands up. That is a better basis for a decision than a demo.
No credit card required. Full access for 14 days.