Whole-home generators in Charleston, SC

What it costs in Charleston

Turnkey packages from the dominant local specialist are listed at $9,500 to $30,000 depending on size and site work. A typical 22 kW air-cooled whole-home install in the region runs $10,500 to $13,500 installed. Simpler local estimates band around $6,000 to $11,000 for smaller or essentials-only setups — that lower band usually means a smaller unit, less electrical work, or a home that already has the right gas service.

The Charleston wait is the real story

Charleston is close to a one-specialist market: one large Generac franchise handles most of the volume, backed by general electricians with much thinner generator profiles. That franchise's own responses to customer complaints state quoted timelines of 6 to 8 months for permitted sites and 5 to 7 months for non-permitted sites. Multiple local employers were hiring generator technicians at the same time in our review — a sign crews, not demand, are the bottleneck.

Translation: if you want a generator before next hurricane season, the quote needs to happen months before you want the install.

Local things that affect your price

• Permits and inspections: City of Charleston, Charleston County, Mount Pleasant, and Summerville each run their own electrical/gas permit path. Permitted jobs sit in the longer timeline band.
• Gas service: Many Lowcountry homes need a gas meter upsizing or a new propane tank. That is real money and real scheduling.
• Flood and elevation: Pad placement has to respect flood zones and elevation — your installer should raise it in the first visit, not the last.
• Historic and HOA rules: Placement, screening, and noise rules can limit where the unit sits in parts of Charleston and Mount Pleasant.

Areas we cover

Charleston, Mount Pleasant, West Ashley, James Island, Johns Island, Daniel Island, North Charleston, Hanahan, Summerville, Goose Creek, and nearby Lowcountry communities.

Get a free whole-home generator quote

Free for homeowners. No charge to request a quote. We review every request and connect you with one local installer who serves your area.

Full name Email Mobile phone City / area Select oneCharlestonMyrtle BeachMount PleasantSummervilleNorth CharlestonConwayGeorgetownOther SC coast Home sizeSelect oneUnder 1,500 sq ft1,500-2,500 sq ft2,500-3,500 sq ft3,500-5,000 sq ftOver 5,000 sq ftNot sure Generator size interestSelect oneEssentials only (10-14 kW)Most of the home (18-22 kW)Whole home (24-26 kW+)Not sure — help me size it TimelineSelect oneAs soon as possibleWithin 1-3 monthsWithin 3-6 monthsJust researching for now What worries you most about outages?Select oneHurricane seasonMedical equipment / healthFood loss / well pump / sump pumpHeat and humidityWorking from homeOther Anything else we should know? (optional)

Company

I agree that Coastal SC Generator Guide may share my information with one local generator installer so they can contact me by phone, text, and email about a quote, and may contact me about my request. Message and data rates may apply. Consent is not a condition of purchase. Reply STOP to opt out of texts.

Installers on the coast are booking 5 to 8 months out. Submitting early does not lock you into anything — it gets you a real price and a place in line to consider.

Get my free quote