Green Week 2021


Image of an email icon

Email’s Carbon Footprint

Friday 26 February 2021

Everything in life has a carbon footprint – even emails.

For example, below you can see the average carbon footprint of different types of emails:

  • Average spam email: 0.3 g CO2e (carbon dioxide equivalent)
  • Standard email: 4 g CO2e
  • Email with “long and tiresome attachments”: 50 g CO2e

The information above is from the book “How Bad are Bananas?: The Carbon Footprint of Everything“ by Mike Berners-Lee.

While these numbers may not seem like a lot at a first glance, if you take into account how many emails are sent and received each day, it will start adding up.

So what can I do to reduce my impact?

  1. Reduce the size of your emails – e.g. compress pictures and reduce file sizes (or send a link to files – see point 4)
  2. Update your mailing lists on a regular basis – e.g. remember to remove contacts that unsubscribe and update a changed email address immediately.
  3. Double check the content in your email before you send to ensure it contains all the relevant information to avoid a follow-up email.
  4. Share files or information via file share (e.g. via OneDrive or SharePoint) rather than adding an attachment to your email.

Source and more information: Carbon Literacy Project in “The Carbon Cost of an Email”



Image from Trinity Green Data Centre

Green IT in Trinity - Green Data Centre

Thursday 25 February 2021

In the Green Data Centre in Trinity, the mechanical, lighting, electrical and computer systems are designed for maximum energy efficiency and minimum environmental impact.

The focus is on sustainability, reduced operational costs, reduced carbon footprint and return on investment.

The hourly Power Usage Effectiveness (PUE) of the Centre, which means the ratio between the total energy that the facility uses and the energy used to power the IT equipment, is 1.15.

View video on the Green Data Centre in Trinity

Learn more about Green IT



How to make your IT Greener

23 February 2021

Technology has allowed many of us to work from home, which made it possible for the University to switch to remote working and learning in March 2020 when we entered the first lockdown due to the global pandemic.

If you are using technology on a daily basis, have you thought about how you can make your IT greener? Below we’ve put together some tips to help you become more sustainable when using technology while working or studying remotely.

Tips for making your IT greener

To save energy and to to reduce your carbon footprint:

  1. Turn off your computer monitors when not in use and set your laptop / computer to go on standby after a certain number of minutes to save energy
  2. Turn off devices overnight and at the weekends
  3. Share large files via cloud using file shares such as Microsoft OneDrive, Teams or SharePoint rather than via email (see article on Email's carbon footprint)
  4. Buy the right equipment – laptops use much less energy than powerful desktop computers
  5. Buy equipment that will last – the manufacturing process accounts for 70% of the natural resources used in a computer’s lifetime (see article on Green Computing, Wikipedia)

Learn more about Green IT



Poster with text - Trinity Green Week Feb 22nd - 26th. 2030: Time for a Game Change.

Trinity Green Week 2021

22 February 2021

Monday 22nd – Friday 26th February is Green Week in Trinity.

Trinity has the longest running Green Week of any university/college in Ireland. This year the theme “2030: Time for a Game Change” was chosen to align with the next ten years being crucial, in terms of radically changing how we live on the planet.

Launch of Green Week

The official launch of Trinity’s Green Week will take place today, Monday 22nd February at 1pm.

Chancellor Mary McAleese, Provost Patrick Prendergast, Sustainability Advisor Michele Hallahan and Students' Union Environmental Officer Aine Hennessy will be speaking at the event.

Register for the Green Week Launch

All Events

There will be a number of other events hosted in Trinity throughout the week. To get an overview of all events, check out the Green Week events calendar below.

Green Week Events Calendar

More Information about Sustainability in Trinity

Trinity Green Week

Trinity Green Pages