Siemens has been the standard for quality and innovation for meter mounting equipment for over half a century. Most utilities will not hook up to a meter socket unless it is approved by them. These approvals can change without notice. Before purchasing or installing this meter socket, confirm approval with your local utility. Some utilities do not maintain lists, so just because a utility is not listed below does not mean that this device cannot be used on their network. Current Utility Approvals NSTAR Boston MA Central Maine Power Augusta ME Duke Energy (NC) Greensboro NC Delaware Electric Coop Greenwood DE Maine Public Service Co Presque Isle ME National Grid (NIMO) Albany NY PP&L (Pennsylvania Power & Light Co.) Hazleton PA Entergy (LA) New Orleans LA United Illuminating Company New Haven CT Unitil (NH) HAmp,ton NH