The organizers of the Paris Olympics want to reduce the environmental impact of the event.
Paris wants its emissions to be half of what they were in the past.
"With Birmingham, we are bound by a shared vision, and that's why we're working on Paris 2024," said Grenon.
The vision is to deliver a spectacular celebration, showcasing the best of our cities and harness the power of sports to unite and create long- lasting benefits for society, but also taking care of the impact that these events are going to leave behind."
The Olympics and the Paralympics are the biggest events in the world. We want to set a new model for these games so that we are in line with what society is asking of us.
We are reducing our emissions by 50% compared to the average of London and Rio. All of the emissions will be offset by us. The first games to be fully aligned with the Paris Agreement would be us. Climate ambitions are very important.
The goal of the Paris Agreement was to cut the greenhouse gas emissions that are causing global warming.
Efforts were made to limit global temperature rises to 1.5C and to keep them below 2.0 before the Industrial Revolution.
Major sporting events have had an impact on the environment. Travel, energy and food are the biggest contributors to a sport's carbon footprint.
The Tokyo Olympics' post-Games sustainability report calculated that the event had a total carbon footprint of between 1.96 million and 2.42 million tonnes of carbon dioxide, though it claimed the 2020 event (held in 2021) went "beyond carbon neutrality" through a range of reduction and mitigation measures.
The report said that emissions were lower than they could have been because there weren't as many fans.
The football World Cup in Qatar this year has plans to limit its impact but it is estimated that it will produce 3.6 million tonnes of carbon dioxide, which is more than any country's annual emissions.
One strand of its approach is to reuse or renovation existing sites instead of building new ones.
Paris has followed suit.
"In order to reduce our emissions by 50%, we have to make very strong decisions very early on, such as using 85% of existing or temporary infrastructure." We are not building very much. Wherever we are building, we are building low carbon and it has to be used after.
The Paris organizers took advice from their counterparts in the UK on how to plan for a sustainable Games.
"We really found that it was important to share best practices among large sports eventsOrganisers, including approaches to Catering and Waste Management."
We were able to take their experience into account when assessing our own options for the Olympics and Paralympics.