SC Energy Data

Grid

Line Miles
The table below shows electric distribution and transmission line miles in South Carolina. Distribution lines deliver the electric power to individual customers. Transmission lines carry the electricity from power plants to different regions and substations.
 
Table 1
2017 Electric Line Miles
Utility
Distribution Line Miles
Transmission Line Miles
SCE&G
18,343
3,728
Santee Cooper
2,934
5,112
Duke Energy Carolinas
19,061
5,023
Duke Energy Progress
5,260
930
Municipalities
4,306
2,027
SC Cooperatives 75,190 --
Total
125,094
16,820
 
SAIDI/SAIFI
Electric power system reliability can be measured and reported in several different ways to provide performance trends, both in outage duration and in outage frequency.
 
The Institute of Electrical and Electronics Engineers (IEEE) defines the generally accepted reliability indices in its standard number 1366, “Guide for Electric Distribution Reliability Indices.”
 
The most common measurement indices that distribution utilities follow and share are the System Average Interruption Duration Index (SAIDI) and the System Average Interruption Frequency Index (SAIFI).
 
SAIDI indicates the total duration of interruptions for the average customer across the electric system during a predefined period of time such as a month or a year.
 
SAIFI indicates how often the average customer experiences a sustained interruption over a predefined period of time, typically a year.
 
For more information on SAIDI and SAIFI see EIA’s video on the topic. 
 
Table 2
SAIFI and SAIDI Reliability Data
Year ending December 31, 2017
Utility
Without MEDs
With MEDs
SAIFI
SAIDI
SAIFI
SAIDI
SCE&G
1.14
81.82
1.85
329.61
Santee Cooper
0.32
18.82 0.54 37.48
Duke Energy Carolinas
1.13
186 1.65 650
Duke Energy Progress
1.65
179 1.65 179
Central Electric Power Cooperative, Inc. - Transmission Level
0.17
12.70 0.22 21.4
Abbeville
1.32
320.73 1.32 320.73
Bamberg
--
0.81 0.06 7.46
Bennettsville
--
--
--
--
Camden
--
--
--
--
Clinton
--
--
--
--
Easley
1.42
109.8
*
*
Georgetown
--
--
--
--
Greenwood
--
--
--
--
Greer
0.95
1.2
--
--
Gaffney
--
--
--
--
Laurens
0.07
4.7
0.12
10.43
Orangeburg
1.4
2.13 1.92 3.47
Newberry
--
--
--
--
Rock Hill
0.76
1.15 1.13 1.98
Seneca
59
45 70 50.9
Union
--
--
--
--
Westminster
--
--
--
--
Winnsboro
--
--
--
--
* No Major Event Days (MED) in 2017
 
Smart Meters
Smart meters record the consumption of electricity in intervals of usually an hour or less and relay the data back to the electric provider. The electric provider can use this information for monitoring and/or billing purposes. The meters also allow electric providers to remotely “see” what the consumer experiences regarding power quality and make adjustments to improve their electric utility service without requiring the consumer to initiate contact with their provider.
 
Automatic Meter Read (AMR) meters, also known as drive-by meters, communicate data about a customer’s energy use and/or outage status to electric providers by sharing information over power lines or to nearby collection equipment through radio frequencies.
 
Advanced Metering Infrastructure (AMI) meters are more advanced than AMR meters and enable two-way data communication. This system allows for better outage reporting, remote disconnection of service, the installation of load-management devices, and a finer resolution of energy use. This finer resolution allows utilities to provide information and services that give customers better control over their energy costs by capturing hourly energy use and demand data.
 
Table 3
2017 Smart Meter Penetration in South Carolina
Utility
Total Number of Meters
Manually Read Meters
AMR Meters
AMI Meters
Number of Meters
Time of Use Rate Ready
Number of Meters
Implementing Time of Use Rate
SCE&G
742,627
187
719,965
22,475 22,475 1,559
Santee Cooper
178,738
45,253 124,585 5,900 5,983 34
SC Cooperatives
794,588
-- 34,059 760,529 567,028 55,787
Duke Energy Carolinas
598,454
1,926 38,523 558,005 558,005 5,898
Duke Energy Progress
173,300
3,182 161,669 8,449 8,449 4,973
Municipalities
172,136
46,349 73,163 52,624 5,915 28
Total
2,659,843
96,897
1,151,964
1,407,982
1,167,855
68,279

DOWNLOAD DATA ARCHIVE: Grid- Smart Meter Penetration 2016-2017