They are working on the tech, not rolling it out.

To answer your questions:

1) Capture stations will be setup wherever the people who license the tech or purchase equipment want it to be setup.

2) The easiest way to guarantee the electricity used is Green is to only plug the equipment into Green electricity sources. Which makes economic sense too if you can afford the initial outlay. Plus it means you can sell your methane as a Green fuel without being put on trial for fraud, a bonus if that is a better market.

For hydrogen in Europe to be considered green - if I’m not mistaken - you need not just carbon neutral sources, but also you need them built specifically for the purpose of capturing hydrogen. It can be tracked.