the DNO can be called out FOC to isolate in the AM and re-energise in the PM.
The DNO cannot charge for this service.
Not quite. This is what EDF says in their leaflet "Information for electricians and other parties seeking de-energisation of supplies to enable electrical wiring activity to be undertaken on a customer’s electrical installation".
The only parties EDF Energy permits to work upon distribution and metering equipment in EDF Energy’s ownership or control are EDF Energy’s own employees and contractors undertaking distribution activities, and the Meter Operator appointed to the premises concerned by the appointed Electricity Supplier. The appointed Meter Operator undertakes work under instruction from the appointed Electricity Supplier, with such work being limited to operating service termination cut-out fuse/isolation device and working upon associated metering and making or remaking connections to customer’s installation.
I guess the DNO does not charge for the service because they don't do it.
