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Annual savings (estimate) Bill savings
$1791.0 57%
Annual savings (estimate) $1791.0
Local installers | No obligation
Bill savings 57%
Based on: 40 kWh/day usage · 13 kW solar · 5 kWh battery · typical tariffs

Solar & Battery Savings in South Carolina, United States Get quotes from local installers

Design solar and battery systems for South Carolina using Photonik's professional design platform. South Carolina has strong coastal and upstate sun with growing residential adoption. Duke Energy Progress and Duke Energy Carolinas serve most homeowners. Export compensation is typically low, so daytime self-use drives payback.

Compare solar savings and payback across US states →

Solar Energy Savings in South Carolina

How Solar Reduces Your Electricity Bills

The calculations below show how your electricity bills change with solar.

What drives your savings in South Carolina

South Carolina's retail rates average around 12c/kWh with export credits near 4c/kWh under Dominion Energy and Duke Energy net metering — a wide gap that makes self-consumption-focused sizing essential. Coastal and upstate markets see strong solar resource (4.5–5 kWh/m²/day) and heavy summer AC loads. South Carolina exempts the added value of solar from property tax assessments, improving long-term economics for homeowners who size systems to offset daytime consumption.

Panel Placement Tool South Carolina

Loading panel placement tool...

This is a simplified panel layout tool — if you hit issues here, or need multiple groups, shading, or generation calcs, use the full Photonik design tool.

Your usage & system size South Carolina

Energy usage & tariffs

Energy consumption patterns in South Carolina reflect the state's humid subtropical climate, with high cooling needs during hot summers. The average South Carolina household uses between 30-40 kWh per day, with higher consumption during summer months for air conditioning. Energy-efficient properties throughout South Carolina often use significantly less through modern insulation, efficient HVAC systems, and smart thermostats.

Before installing solar, consider reducing your energy consumption through improved insulation and energy-efficient appliances. This is particularly valuable in South Carolina, where reducing consumption can lower required solar system size and improve returns.

5 kWh 100 kWh
$ /kWh
$ /kWh
%

lightbulb Note: These are simplified estimates. For detailed tariff inputs and advanced calculations, use the full Photonik app.

Representative flat export rate (feed-in tariff). What you earn per kWh of surplus solar exported to the grid. Your actual rate depends on your provider, plan, and time of day.

See how export rates work →

Estimated at 75% of the retail grid rate. A battery lets you store daytime solar and export during expensive peak hours, so each exported kWh is typically worth more than a flat feed-in tariff. Real returns depend on your time-of-use tariff and battery efficiency.

See how export rates work →

Solar system size

You'll need around 10.5kW of solar to match your average consumption in South Carolina. We recommend sizing between 15.8kW and 21.1kW for optimal results, accounting for daily and seasonal variations. South Carolina has good solar potential, with most regions averaging 4.5-5.0 kWh/kW/day annually.

A 15.8 kW system in South Carolina generates approximately 68.2 kWh daily on average, with seasonal variation from 3.44 kWh/kW/day in December to 4.83 kWh/kW/day in April. South Carolina's solid solar irradiance and favourable net metering make solar attractive for homeowners across the state.

1 kW 20 kW

lightbulb

A 13 kW system in South Carolina can generate approximately 20468.0 kWh annually based on local sun conditions.

Battery storage

With solar-only (no battery), a 15.8 kW system provides approximately 50% self-usage in South Carolina, depending on your consumption patterns, drawing 50% from the grid. Adding a 10 kWh battery increases energy independence to approximately 72% annually, reducing grid reliance to 28%. Battery storage is valuable in South Carolina, allowing you to store excess summer generation for evening use and providing backup power during outages.

A battery shifts solar energy from daytime overproduction into evening peak use. For accurate battery savings and ROI calculations specific to your utility, use the full Photonik design tool.

0 kWh 30 kWh

lightbulb A 0kWh battery will make you about 0% self sufficient.

The sweet spot for most households is 5 – 13 kWh — larger batteries add independence but with diminishing payback, especially where feed-in tariffs are low.

System Pricing & Payback for South Carolina

Use the full Photonik solar planning and design platform to model a complete system for your home — including detailed costs, equipment options, and financial returns.

Try Photonik Solar Design

For a quick price guide, see the United States solar calculator.

Solar Installers Charleston

Charleston is the coastal SC hub in Dominion Energy South Carolina / legacy SCE&G territory. Retail ~12c/kWh with low export ~4c/kWh — self-consumption sizing is critical. Strong coastal sun and high summer humidity drive AC loads. Historic peninsula has strict aesthetic rules; West Ashley and Mount Pleasant suburbs are the main residential markets.

Example local businesses with published addresses; not ranked by Photonik or by star ratings.

  • Alder Energy Systems — 495 Jessen Lane, Charleston, SC 29492
  • SCSP Solar — 460 King St, Suite 200, Charleston, SC 29403

Compare multiple installer quotes through Solar Reviews.

Solar Installers Columbia

State capital in the Midlands, Dominion Energy SC territory. University of South Carolina and state-government employment base. Piedmont sun resource (~4.5–5 kWh/m²/day); ranch and colonial homes with good roof pitch. SC property tax exemption on solar adds value.

Example local businesses with published addresses; not ranked by Photonik or by star ratings.

  • Sunrun — 95B Sunbelt Blvd, Columbia, SC 29203
  • SunPro Solar — 630 Blue Ridge Ter, Columbia, SC 29203
  • Poly Energy — 1682 Lake Murray Blvd, Columbia, SC 29212

Compare multiple installer quotes through Solar Reviews.

Solar Installers North Charleston

Tri-county metro's industrial and residential mix, Dominion Energy SC. More affordable housing stock than peninsular Charleston; flat and low-slope roofs on post-war homes common. Boeing and port employment; growing suburban solar market in Park Circle and Ladson areas.

Example local businesses with published addresses; not ranked by Photonik or by star ratings.

  • Blue Raven Solar — 3251 Landmark Dr, Suite 242, North Charleston, SC 29418
  • Boss Energy — 4365 Dorchester Rd, Suite 301, North Charleston, SC 29405

Compare multiple installer quotes through Solar Reviews.

Solar Installers Greenville

Upstate SC hub, Duke Energy Carolinas territory (distinct from coastal Dominion). Strong Piedmont sun with less coastal humidity. Revitalized downtown and fast-growing suburbs (Simpsonville, Greer) have new construction with solar-ready roofs. Manufacturing-sector economy supports steady residential interest.

Example local businesses with published addresses; not ranked by Photonik or by star ratings.

  • Gold Path Solar — 128 Millport Cir, Suite 200, Greenville, SC 29607
  • Firefly Solar — 1200 Woodruff Rd, Suite F16, Greenville, SC 29607

Compare multiple installer quotes through Solar Reviews.

Solar Installers Mount Pleasant

Affluent Charleston suburb, Dominion Energy SC. New-build communities (Carolina Park, Tides) often include solar provisions or minimal HOA friction. Coastal exposure — corrosion-resistant racking and hurricane wind ratings matter. High home values support larger systems with battery backup.

Example local businesses with published addresses; not ranked by Photonik or by star ratings.

  • EMPWR Solar — 1007 Johnnie Dodds Blvd, Suite 111, Mount Pleasant, SC 29464

Compare multiple installer quotes through Solar Reviews.