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
2017 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
1,754
1,655
Pumped Storage
576
576
Hydroelectric
226
218
Solar
--
7
Nuclear
661
441
Total
5,419
5,034

DOWNLOAD DATA ARCHIVE: Capacity: SCE&G 2016-2017

Table 2
Santee Cooper
2017 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
241
376
Solar
4
4
Nuclear
331
322
Total
5,544
5,441

DOWNLOAD DATA ARCHIVE: Capacity: Santee Cooper 2016-2017

Table 3
Duke Energy Carolinas
2017 Capacity (MW)
Fuel Type
Winter
Summer
Coal
1,841
1,826
Biomass
--
8
Combustion Turbines- Natural Gas and Oil
889
720
Natural Gas - Boiler and Combined Cycle
434
505
Pumped Storage
578
578
Hydroelectric
297
327
Solar
1
11
Nuclear
1,993
1,939
Total
6,033
5,912

DOWNLOAD DATA ARCHIVE: Capacity: Duke Energy Carolinas 2016-2017

Table 4
Duke Energy Progress
2017 Capacity (MW)
Fuel Type
Winter
Summer
Coal
539
532
Biomass
--
12
Combustion Turbines- Natural Gas and Oil
517
430
Natural Gas - Boiler and Combined Cycle
452
385
Pumped Storage
--
--
Hydroelectric
34
34
Solar
1
10
Nuclear
555
531
Total
2,097
1,934

DOWNLOAD DATA ARCHIVE: Capacity: Duke Energy Progress 2016-2017