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
2016 Capacity (MW)
Fuel Type
Winter
Summer
Coal
1,739
1,734
Biomass
55
55
Natural Gas - Combustion Turbines
408
348
Natural Gas - Boiler
346
345
Natural Gas - Combined Cycle
1,408
1,310
Oil - Turbine
-
-
Pumped Storage
576
576
Hydroelectric
226
218
Solar
-
3
Nuclear
661
647
Total
5,419
5,236

 

Table 2
Santee Cooper
2016 Capacity (MW)
Fuel Type
Winter
Summer
Coal
3,530
3,500
Biomass
103
103
Natural Gas - Combustion Turbines
630
517
Natural Gas - Boiler
-
-
Natural Gas - Combined Cycle
520
460
Oil - Turbine
185
159
Pumped Storage
-
-
Hydroelectric
241
241
Solar
3
3
Nuclear
331
324
Total
5,543
5,306

 

Table 3
Duke Energy Carolinas
2016 Capacity (MW)
Fuel Type
Winter
Summer
Coal
1,578
1,569
Biomass
-
-
Natural Gas - Combustion Turbines
737
637
Natural Gas - Boiler
39
39
Natural Gas - Combined Cycle
323
303
Oil - Turbine
-
-
Pumped Storage
492
492
Hydroelectric
253
253
Solar
1
1
Nuclear
1,692
1,647
Total
5,114
4,941

 

Table 4
Duke Energy Progress
2016 Capacity (MW)
Fuel Type
Winter
Summer
Coal
467
461
Biomass
-
-
Natural Gas - Combustion Turbines
256
217
Natural Gas - Boiler
-
-
Natural Gas - Combined Cycle
389
341
Oil - Turbine
194
165
Pumped Storage
-
-
Hydroelectric
30
30
Solar
6
6
Nuclear
481
460
Total
1,822
1,679