@Uneek
Firstly you need your DD to look at her tenancy agreement.
Is there any clause re: utilities?
Secondly she needs to know who is the named party re: billing utilities.
This is helpful: glide.co.uk/guides/when-your-housemate-isnt-paying-bills/
In our case, the Uni acts a broker for landlords and provides maintenance for the property.
There is a set amount included in each housemates weekly rent for utilities that if they exceed they have to top up.
However, that top up is proportional so in a house of 4 (in our case) the liability would only be our child's share and the Uni would reclaim the rest from any non-payer.
In return for this contract all the housemates had to have a guarantor (and we are one for our child).
In our case we told DS to have an early convo about utility usage and they are all being sensible.
We don't want them to be cold, but neither wasteful by leaving lights on or turning the heating off and then "blasting" it when they freeze - rather a sensible temperature that's maintained is more cost efficient as is employing other simple strategies such as closing curtains/doors and sharing the oven to cook together where possible.
When I was at Uni I had the same experience as a pp with some housemates being heating refuseniks, only to find they'd very nicely kitted out their rooms with electric blankets and fan heaters. That issue was swiftly resolved.
Basically your DD shouldn't assume the jumper crowd are practicing what they preach.
Finally, it's all very well saying students should "suffer" as we all did and put up with it.
Not so great if a child has asthma for example.....