Minnesota Legislature
Office of the Revisor of Statutes
Minnesota Administrative Rules
7826.0200 DEFINITIONS.
Subp. 2.
Bulk power supply facility.
"Bulk power supply facility" means the interconnected system that encompasses the electric generation resource, transmission lines, transmission substations, and associated equipment that, upon a total, simultaneous, and sustained interruption, disrupts service to all distribution feeders exiting that substation when those distribution feeders do not have service restoration interconnections with alternate sources.
Subp. 3.
Cold weather rule.
"Cold weather rule" means the set of protections against disconnection during the heating season set forth in Minnesota Statutes, sections 216B.096 and 216B.097.
Subp. 4.
Customer average interruption duration index or CAIDI.
"Customer average interruption duration index" or "CAIDI" means the average customer-minutes of interruption per customer interruption. It approximates the average length of time required to complete service restoration. It is determined by dividing the annual sum of all customer-minutes of interruption durations by the annual number of customer interruptions, using storm-normalized data.
Subp. 5.
Customer complaint.
"Customer complaint" means any call center communication by a utility customer in which the customer states a grievance related to the utility's provision of service to that customer.
Subp. 6.
Interruption.
"Interruption" means an interruption of service to a customer with a duration greater than five minutes.
Subp. 7.
Major service interruption.
"Major service interruption" means an interruption of service at the feeder level or above and affecting 500 or more customers for one or more hours.
Subp. 8.
Resolved.
"Resolved," used in regard to customer complaints, means that the utility has examined the complainant's claims, conducted any necessary investigation, and done one of the following:
C.
provided the customer with information that demonstrates that the situation complained of is not reasonably within the control of the utility; or
D.
refused to take the action the customer requested and communicated that refusal to the customer.
Subp. 9.
Storm-normalized data.
"Storm-normalized data" means data that has been adjusted to neutralize the effects of outages due to major storms.
Subp. 10.
System average interruption duration index or SAIDI.
"System average interruption duration index" or "SAIDI" means the average customer-minutes of interruption per customer. It is determined by dividing the annual sum of customer-minutes of interruption by the average number of customers served during the year, using storm-normalized data.
Subp. 11.
System average interruption frequency index or SAIFI.
"System average interruption frequency index" or "SAIFI" means the average number of interruptions per customer per year. It is determined by dividing the total annual number of customer interruptions by the average number of customers served during the year, using storm-normalized data.
Subp. 12.
Utility.
"Utility" means any person, corporation, or other legal entity engaged in the retail distribution of electric service to the public, with the following exceptions:
C.
persons distributing electricity only to tenants or cooperative or condominium owners in buildings owned, leased, or operated by those persons;
D.
persons distributing electricity only to occupants of a manufactured home or trailer park owned, leased, or operated by those persons; and
Subp. 13.
Work center.
"Work center" means a portion of a utility's assigned service area that it treats as an administrative subdivision for purposes of maintaining and repairing its distribution system.
Statutory Authority:
MS s 216B.81
History:
27 SR 1174; L 2009 c 110 s 37
Published Electronically:
June 2, 2009
Official Publication of the State of Minnesota
Revisor of Statutes