They might be making $200 billion of commitments to invest in sustainable projects, but it's up to them to define what “sustainable” means. That's why you might be interested in defining “sustainable” as well, and coming up with other words or at least requiring them to provide very specific information on what they mean when they say “sustainable”.
That brings me back to what I was saying about the Competition Act. Now, if you say that you're investing in sustainable projects, you need to have proof, but you're not required to disclose this proof. If you require banks that say that they're sustainable to explain how and to provide all the evidence, then you're providing an additional layer of transparency.