[Someone]

FTA: “A key barrier to electrification is often the limitations of the local electricity grid – it's hard to get access to a big connection for powering your trains. "That problem has only become much, much worse," says Mr Murray.”

⇒ This moves production close to where power is consumed, removing/decreasing the need for new grid infra.

[tsimionescu]

The article claims this, but the huge amount of electrified rail that already exists, and has for 50 years, suggests the problem isn't as difficult as they make it out.