SC Energy Data

Capacity

The demand for electricity depends on numerous variables, one of which is weather dependent – with peaks resulting from air conditioning use in the summer and heating use in the winter. Most of South Carolina’s utilities tend to reach their peak demand in the summer, although recently they have experienced peaks in both summer and winter. Utilities need sufficient capacity to meet this demand, which is defined as the maximum electric output a generator can produce under specific conditions and is measured in MW.

Electric capacity in South Carolina is not necessarily consumed in the state. South Carolina has two multi-state utilities (Duke Energy Carolinas and Duke Energy Progress) that share the electricity generated in both South Carolina and North Carolina among their customers in the Carolinas. The pro rata share data represents the portion of electricity generation capacity allocated in South Carolina.

Table 1
SCE&G
2018 Capacity (MW)
Fuel Type
Winter
Summer
Coal
1,739
1,734
Biomass
55
55
Combustion Turbines- Natural Gas and Oil
408
348
Natural Gas - Boiler and Combined Cycle
2,325
2,159
Pumped Storage
576
576
Hydroelectric
191
183
Solar
0
121
Nuclear
661
441
Total
5,955
5,617

DOWNLOAD DATA ARCHIVE: Capacity: SCE&G 2016-2018

Table 2
Santee Cooper
2018 Capacity (MW)
Fuel Type
Winter
Summer
Coal
3,530
3,500
Biomass
103
103
Combustion Turbines- Natural Gas and Oil
815
676
Natural Gas - Boiler and Combined Cycle
520
460
Pumped Storage
--
--
Hydroelectric
142
142
Solar
4
4
Nuclear
322
322
Total
5,436
5,207

DOWNLOAD DATA ARCHIVE: Capacity: Santee Cooper 2016-2018

Table 3
Duke Energy Carolinas
2018 Capacity (MW)
Fuel Type
Winter
Summer
Coal
1,841
1,826
Biomass
--
8
Combustion Turbines- Natural Gas and Oil
889
1,545
Natural Gas - Boiler and Combined Cycle
646
691
Pumped Storage
578
578
Hydroelectric
298
328
Solar
1
16
Nuclear
1,993
1,939
Total
6,246
6,931

DOWNLOAD DATA ARCHIVE: Capacity: Duke Energy Carolinas 2016-2018

Table 4
Duke Energy Progress
2018 Capacity (MW)
Fuel Type
Winter
Summer
Coal
503
496
Biomass
--
12
Combustion Turbines- Natural Gas and Oil
473
395
Natural Gas - Boiler and Combined Cycle
422
360
Pumped Storage
--
--
Hydroelectric
32
32
Solar
1
41
Nuclear
519
496
Total
1,950
1,832

DOWNLOAD DATA ARCHIVE: Capacity: Duke Energy Progress 2016-2018