Can someone confirm that the council actually stipulated that the club would need to provide a fully costed net-zero carbon plan? That would make the stadium not just 'environmentally friendly', but probably the most climate friendly stadium worldwide? That is a hell of a challenge.
The only stadium that I can find that comes close to net zero carbon is the Climate Pledge Arena in Seattle (
https://climatepledgearena.com/), which cost over $1bn to renovate.
I've got to be an honest I'm quite concerned that the council have - perhaps inadvertently- set the club an almost impossible target to meet?