Is there electricity provision for CPAP machines?

We have seen an increase in demand for power supply on group campsites for medical reasons.
Running power all over the event site is expensive, and the infrastructure in place is limited.
We are asking groups requiring power for CPAP machines to consider requesting a battery unit from their medical provider, or consider an external portable battery bank.
We will provide facilities in subcamps to recharge the battery banks.
For chilled medication storage, each subcamp will offer a fridge in which locked and labelled tins can be placed and accessed as needed.