A senior figure at Northern Powergrid has said the company is being “careful” not to “overpay” for flexibility and suggested some distribution network operators (DNOs) may be procuring more than they actually need “just to have a high number”. Discussing the company’s draft business plan for the RIIO2 price controls, policy and markets director Patrick Erwin said it is also refraining from creating separate body to perform its distribution system operator (DSO) functions, describing this as an “artificial distinction”.