Cardiff's Millennium Stadium is working with the British Standards Institution to become the UK's first certifiably sustainable green event venue.
The Cardiff venue, which will play host to a number of high-profile events this year including Monster Jam and a Wales v South Africa rugby match, is hoping to gain certification to the British Standard BS 8901.
Millennium Stadium manager Gerry Toms said the venue has prioritised its commitment to sustainability.
"While we have always considered our impact on the environment, and have introduced systems such as rain and waste recycling in the past, we are now looking at more ways to run the business more efficiently and build for the future," he added.
The building already harvests rainwater within its pitch irrigation system, recycles all of its waste and monitors energy and water consumption.
Its new measures include the installation of LED lighting to reduce electricity consumption.