Private 5G networks are an example of NPNs
Non-Public Networks (NPNs) are private 5G networks. NPNs can be deployed using shared licensed spectrum via a network operator. NPNs can be deployed as standalone networks as well, either using licensed or unlicensed spectrum, depending on local regulatory approval.
The 3GPP’s definition of Non-Public Network (NPN) was laid out in Release 16, and refined in Release 17.
“A Non-Public Network (NPN) enables deployment of a 5G System for private use,” said 3GPP.