WattBuy’s Guide to

Electricity in
Johnston

South Carolina

Header Graphic

The State of Electricity in Johnston

Here's the average monthly bill, usage, and carbon footprint of residents in Johnston

Average monthly bill

January

$233highest

February

$143

March

$142

April

$139lowest

May

$154

June

$168

July

$180

August

$169

September

$162

October

$147

November

$140

December

$170

Carbon Emissions

526 lbs CO₂

Monthly Usage

1,065 kWh

Where does Johnston’s electricity come from?

Johnston's energy comes from Nuclear, Natural Gas, Coal, Solar, and Hydroelectric. Nuclear is the largest source of electricity, providing 59% of Johnston's energy. Natural Gas is the second largest source, making up 20%. Coal provides 14% of the energy in Johnston. Solar provides 4% of the energy in Johnston. Hydroelectric provides 3% of the energy in Johnston.

59%

Nuclear

20%

Natural Gas

14%

Coal

4%

Solar

3%

Hydroelectric

Solar energy in Johnston

The state of solar in Johnston

Solar power is on the rise, helping homeowners save on their electricity bills and power their homes sustainably.

0 kWh

Energy generated by average sized system

$13,766

Average system cost

(after federal incentive)

10 years

Payback period

Learn More about solar
Net Metering Available

Get paid for the extra solar you produce

Net metering policies in Johnston can help solar panel owners save money and reduce their carbon footprint. When your solar panels generate more electricity than you use, you can send the excess back to the grid and receive credit on your next bill. Just something to keep in mind when considering solar panels.

Utilities in Johnston

Dominion Energy - South Carolina

Dominion Energy - South Carolina Rates

Dominion Energy - South Carolina has several different electricity rates for residential customers, as shown in the table below.

Rate NameRate TypeCost Per kWh
6 (Residential Service Energy Conservation Rate)Fixed12¢ to 13¢
5 (Residential Service Time-Of-Use)TOU10¢ to 27¢
2 (Low Use Residential Service)Fixed10¢
8 (Residential Service)Fixed13¢ to 15¢
7 (Residential Service Time-Of-Use Demand)TOU8¢ to 9¢

Learn About Electricity in Other Cities in South Carolina

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