Live events are great. Yet, they come with a caveat – much higher CO2 emissions compared to virtual events. So how to reduce events CO2 footprint?
Est. read time: 4 min
About the author: leading EU-based NGO, which works hard to deliver change in the way we organise events, travel and go about our daily lives.
3 steps on how to reduce events CO2 footprint

Good news: it’s actually a lot easier than the formula in this picture.
1. Estimate CO2 emissions in advance
You are able to calculate your event’s CO2 emissions by taking into consideration only 3 variables: transportation (✈️), energy (⚡) and accommodation (🛌). That’s not at all scary, right? How to calculate it? Find the full guide with simple steps at the bottom of this blog post.
Why does it matter? For starters, you will see areas, where you can work to reduce your carbon footprint. Secondly, knowing your CO2 estimate will help you to plan your offsetting budget accordingly (it’s around $6 per 1 tonne of CO2).
2. Reduce the actual CO2 emissions during the event
[wpdiscuz-feedback id=”3rw4azouvb” question=”Anything your organization does, that could be shared with others?” opened=”0″]There are many ways to make your event friendlier to the planet[/wpdiscuz-feedback]. And, a lot of them doesn’t require any additional effort. Okay, perhaps a tiny bit. See below for yourself:
🌍 Encourage greener travel
A train ride is about 5 times greener than a flight. And, obviously, a bike ride emits zero carbon. So, how about asking the event’s participants to consider that?
Want to know all about greener travel? Read our full guide or a shorter blog post.
📄 Don’t print
In today’s world, tickets, receipts and invoices are acceptable in a digital format. The same goes for the event’s resources (e.g. info-packs). Thus, there is no need to print any of that.
🏟️ Choose appropriate venues
Choosing a size appropriate venue is a good step towards decreasing the emissions of CO2. What’s the appropriate size? In simplified terms, it’s around 1.2 square meters (sqm) per every seated participant. So, around 120 sqm for 100 people.
🌞 Lots of natural light
This goes without saying, but sunlight is so much more pleasant than lamp-light. Also, natural light doesn’t require any electricity = zero emissions. Hence, choosing a venue with lots of windows can help reduce your CO2 footprint.
On the other hand, be careful about picking a sun-drenched venue in peak summer. As that might require a lot of extra AC.
🌿 Vegetarian beats meat
A vegan or vegetarian meal has approximately a 1 kg CO2 footprint per serving. On the opposite end, having a lamb meal produces an 8 kg CO2 footprint. Shocking, isn’t it?
Find more tips & numbers in the full guide at the bottom of this post.

Support green projects, organise tree-planting events and stick to your CO2 footprint reduction plan
3. Offset the produced emissions
So, you’ve calculated and reduced your CO2 emissions… what’s next? A logical thing to do would be to compensate (offset) that CO2 footprint. How to do that:
🤝 support green projects that reduce our overall CO2 footprint by 1000s of tonnes
🌳 organize tree-planting events (1 tree absorbs around 1 tonne of CO2 during its lifetime)
✍️ reduce your CO2 emissions for the following year by having a plan how to emit less CO2 (and sticking to that plan)
More steps
Surely, more can (and should be done) to lessen events CO2 footprint. For example, publishing your CO2 emissions report. Need a template for it? Check out our full guide on how to reduce CO2 in events: