Solar Installation — South Carolina license requirements
01 The project
The starting point is the work itself — Solar Installation in South Carolina. The job determines which trades are involved, and the trades determine which license classifications may be required.
| Component | Trade |
|---|---|
| Solar energy system | Solar |
| Electrical interconnection | Electrical |
02 Jurisdiction
This project is evaluated for South Carolina — the two-track, three-threshold state. The CLB commercial track licenses general and mechanical contractors above $10,000 total cost of construction (S.C. Code § 40-11-30), through an entity qualified by a 70%-pass qualifying party, backed by the license group's net worth or a surety bond in lieu, renewed biennially. The RBC residential track licenses a residential builder above $5,000 (≤3 floors, ≤16 units) and issues residential specialty credentials above $500 — a licence after exam for plumbers/electricians/HVAC, a no-exam registration for the rest. South Carolina jurisdiction page.
www.llr.sc.gov returned a 20-second timeout to this project's fetcher and to a real browser render, so the CLB and RBC fee figures, the 10/31 renewal dates and the residential bond amounts were surfaced from Google's index of those official URLs rather than machine-read (flagged reported). The statute behind every threshold and classification was read in full from scstatehouse.gov. Permit fees, local construction rules and any municipal business-licence rate were not researched and remain LOCAL_AUTHORITY_REQUIRED. The residential/commercial overlap on buildings is CONFLICT-SC-001, resolved by scope with both statements published side by side. State requirements are not the complete story for any locality.
03 Trade → license
Relations below are recorded per state — only this jurisdiction's classifications are shown.
Trades involved: Solar, Electrical.
- May require RES-SPECIALTY-REGISTRATION — Residential Specialty Contractor — Registration (RBC, no exam) reported S-SC-40-59 rule SC-NO-SOLARThere is NO standalone South Carolina solar credential; a RESIDENTIAL solar install runs on the NO-EXAM specialty REGISTRATION, because § 40-59-20(7) lists 'solar panel installers' in the registration branch (rule SC-NO-SOLAR). 'reported' because the conclusion is assembled from the registration list plus the verified absence of a solar credential.
- Component basis GC-SPECIALTY — General Contractors — Specialty (CLB) confirmed S-SC-40-11 rule SC-NO-SOLARCOMMERCIAL solar also has no standalone credential: § 40-11-410(4)(j) puts solar-panel work under the General Contractor Specialty / Miscellaneous Metals subclassification — roof mount needs GC Roofing or Building (rule SC-NO-SOLAR).
- Alternative path MECH-ELECTRICAL — Mechanical Contractors — Electrical (CLB) confirmed S-SC-40-11 rule SC-ELECTRICAL-50VThe WIRING of a solar array is a separate credential family: § 40-11-410(4)(j) says 'Wiring and connections only may be performed by a licensed Mechanical Contractor with the Electrical subclassification', and work above 50 volts needs it (rule SC-ELECTRICAL-50V).
04 Scope
What the official sources say about the work involved — typed assertions, never a boolean "covers". Interpretations are marked as such.
- Requires another classification MECH-ELECTRICAL Electrical Work Above 50 Volts Needs Electrical Subclassification (requires) S.C. Code Ann. § 40-11-410(5)(d) S-SC-40-11 Above 50 volts the ELECTRICAL subclassification is mandatory — a general building licence alone does not cover it.
- Officially excluded RES-SPECIALTY-REGISTRATION Construct Additions Without Residential Builder Supervision (may_not_perform) S.C. Code Ann. § 40-59-20(7) S-SC-40-59 The home-addition boundary: a specialty tradesperson doing an ADDITION needs a residential builder over them (rule SC-RBC-ADDITION).
- Officially included RES-SPECIALTY-REGISTRATION Residential Solar Panel Installation By Registration (may_perform) S.C. Code Ann. § 40-59-20(7) S-SC-40-59 Residential solar rides the NO-EXAM specialty registration — again no standalone solar credential (rule SC-NO-SOLAR).
- Officially excluded GC-SPECIALTY Fences Not Over Seven Feet Need No Licence Under Misc Metals (may_not_perform) S.C. Code Ann. § 40-11-410(4)(j) S-SC-40-11 A hard statutory limit — a ≤7-ft fence needs no Misc Metals licence (a useful minor-work boundary).
- Requires another classification GC-SPECIALTY Solar Roof Mount And Wiring Split Across Two Subclassifications (requires) S.C. Code Ann. § 40-11-410(4)(j) S-SC-40-11 Commercial solar is SPLIT across existing subclassifications — no credential titled 'solar' exists (rule SC-NO-SOLAR).
05 Requirements
| Requirement | Kind | Statement | Source |
|---|---|---|---|
| No standalone South Carolina solar contractor credential (verified absence) S.C. Code Ann. §§ 40-11-410(4)(j), 40-59-20(7) (read 2026-10-05) | exemption | South Carolina issues NO separate solar licence or registration. Solar panel work is reached inside EXISTING credentials: § 40-11-410(4)(j) puts fabrication/assembly/installation of solar panels under the General Contractor Specialty / Miscellaneous Metals subclassification (roof mounting needs GC Roofing or Building; wiring needs Mechanical Electrical; structural roof upgrades need GC Building or Structural Framing), and § 40-59-20(7) lists 'solar panel installers' among the RESIDENTIAL specialty REGISTRATION areas. There is no credential titled 'solar'. | S-SC-40-11Source S-SC-40-11 — South Carolina General Assembly — Code of Laws Title 40 (Professions and Occupations), Chapter 11 (Contractors) and Chapter 59 (Residential Home Builders)S.C. Code Ann. Title 40, Chapter 11 — Contractors (Contractor's Licensing Board), official unannotated text — S.C. Code Ann. §§ 40-11-410(4)(j), 40-59-20(7) (read 2026-10-05) https://www.scstatehouse.gov/code/t40c011.php Retrieved 2026-10-05 · last verified 2026-10-05 Read IN FULL 2026-10-05 directly from the official www.scstatehouse.gov host (status 200). Key sections credited: § 40-11-10 (board created under LLR; nine members, seven licensed contractors + two consumers); § 40-11-20 (definitions — 'contractor', 'general contractor', 'mechanical contractor', 'mechanical construction', 'license classification', 'license group', 'qualifying party', 'total cost of construction', 'net worth', 'working capital'); § 40-11-30 (LICENSING REQUIREMENT — 'No entity or individual may practice as a contractor … for which the total cost of construction is greater than ten thousand dollars for general contracting or greater than ten thousand dollars for mechanical contracting without a license', raised from $5,000 by 2023 Act No. 69 eff. 2023-05-19); § 40-11-100 (administrative penalties ≤$500 first / ≤$1,000 second / ≤$2,500 per day); § 40-11-110 (discipline, incl. (15) failure to maintain net worth/working capital/surety bond and (21) contracting beyond a group or outside a classification); § 40-11-200 (unlicensed practice is a misdemeanor ≤1 year and/or ≤$5,000; no bid or contract without a licence); § 40-11-230 (qualifying party: 70%+ technical exam + 70%+ SC-law exam; primary qualifying party needs 2 years full-time experience within the previous 5 years); § 40-11-240 (entity licensure); § 40-11-250 (ALL licences renew BIENNUALLY, 90-day retroactive grace); § 40-11-260 (net worth/working capital by license group for General AND Mechanical); § 40-11-262 (SURETY BOND in lieu of a financial statement, in the net-worth amount for the group, State of South Carolina as obligee); § 40-11-410 (license classifications — the four General Contractor classifications and the Mechanical subclasses). |
| Siding, masons, drywall, carpenters, stucco, painters and solar installers need only a REGISTRATION S.C. Code Ann. § 40-59-20(7) (scstatehouse.gov, read 2026-10-05) | registration | S.C. Code Ann. § 40-59-20(7): 'Vinyl and aluminum siding installers, masons, dry wall installers, carpenters, stucco installers, painters and wall paperers, and solar panel installers must be issued specialty contractor registrations, if the other requirements of this article are met.' | S-SC-40-59Source S-SC-40-59 — South Carolina General Assembly — Code of Laws Title 40 (Professions and Occupations), Chapter 11 (Contractors) and Chapter 59 (Residential Home Builders)S.C. Code Ann. Title 40, Chapter 59 — Residential Home Builders (Residential Builders Commission), official unannotated text — S.C. Code Ann. § 40-59-20(7) (scstatehouse.gov, read 2026-10-05) https://www.scstatehouse.gov/code/t40c059.php Retrieved 2026-10-05 · last verified 2026-10-05 Read IN FULL 2026-10-05 directly from the official www.scstatehouse.gov host (status 200). Key sections credited: § 40-59-10 (Residential Builders Commission created; eight members — two consumers, four active residential builders, one residential specialty contractor); § 40-59-20(6) ('residential builder' — constructs/superintends a residential building NOT over three floors and NOT more than sixteen units in any single apartment building, 'when the cost of the undertaking exceeds five thousand dollars'); § 40-59-20(7) ('residential specialty contractor' — special-skills work 'when the undertakings exceed five hundred dollars and are not regulated by the provisions of Chapter 11'; CANNOT construct additions without supervision by a residential builder; thirteen named areas — plumbers, electricians, HVAC, siding, insulation, roofers, floor covering, masons, drywall, carpenters, stucco, painters/wallpaperers, solar panel installers; plumbers/electricians/HVAC get LICENSES after exam, the rest get REGISTRATIONS; a residential builder licensed by exam may do any specialty area without a separate credential); § 40-59-25 (roofing-contract 5-business-day cancellation after a claim denial; deductible rebate is a misdemeanor); § 40-59-30 (unlicensed practice is a misdemeanor, fine $500–$10,000 and/or 30 days; an unlicensed firm cannot file a mechanics' lien or sue to enforce the contract). |
| Licence required for general or mechanical contracting over $10,000 S.C. Code Ann. § 40-11-30 (scstatehouse.gov, read 2026-10-05) | license | S.C. Code Ann. § 40-11-30 verbatim: 'No entity or individual may practice as a contractor by performing or offering to perform contracting work for which the total cost of construction is greater than ten thousand dollars for general contracting or greater than ten thousand dollars for mechanical contracting without a license issued in accordance with this chapter.' The $10,000 figure was raised from $5,000 by 2023 Act No. 69 (H.4115) § 3, effective 2023-05-19. | S-SC-40-11Source S-SC-40-11 — South Carolina General Assembly — Code of Laws Title 40 (Professions and Occupations), Chapter 11 (Contractors) and Chapter 59 (Residential Home Builders)S.C. Code Ann. Title 40, Chapter 11 — Contractors (Contractor's Licensing Board), official unannotated text — S.C. Code Ann. § 40-11-30 (scstatehouse.gov, read 2026-10-05) https://www.scstatehouse.gov/code/t40c011.php Retrieved 2026-10-05 · last verified 2026-10-05 Read IN FULL 2026-10-05 directly from the official www.scstatehouse.gov host (status 200). Key sections credited: § 40-11-10 (board created under LLR; nine members, seven licensed contractors + two consumers); § 40-11-20 (definitions — 'contractor', 'general contractor', 'mechanical contractor', 'mechanical construction', 'license classification', 'license group', 'qualifying party', 'total cost of construction', 'net worth', 'working capital'); § 40-11-30 (LICENSING REQUIREMENT — 'No entity or individual may practice as a contractor … for which the total cost of construction is greater than ten thousand dollars for general contracting or greater than ten thousand dollars for mechanical contracting without a license', raised from $5,000 by 2023 Act No. 69 eff. 2023-05-19); § 40-11-100 (administrative penalties ≤$500 first / ≤$1,000 second / ≤$2,500 per day); § 40-11-110 (discipline, incl. (15) failure to maintain net worth/working capital/surety bond and (21) contracting beyond a group or outside a classification); § 40-11-200 (unlicensed practice is a misdemeanor ≤1 year and/or ≤$5,000; no bid or contract without a licence); § 40-11-230 (qualifying party: 70%+ technical exam + 70%+ SC-law exam; primary qualifying party needs 2 years full-time experience within the previous 5 years); § 40-11-240 (entity licensure); § 40-11-250 (ALL licences renew BIENNUALLY, 90-day retroactive grace); § 40-11-260 (net worth/working capital by license group for General AND Mechanical); § 40-11-262 (SURETY BOND in lieu of a financial statement, in the net-worth amount for the group, State of South Carolina as obligee); § 40-11-410 (license classifications — the four General Contractor classifications and the Mechanical subclasses). |
| License group sets the per-job financial ceiling for bidding and performing S.C. Code Ann. §§ 40-11-20(13), 40-11-110, 40-11-260 (read 2026-10-05) | license | S.C. Code Ann. § 40-11-20(13): 'License group' means the financial limitations for bidding and performing general or mechanical construction. § 40-11-110(A)(21) makes 'contracting or offering to contract for construction work exceeding the limitations of a group or outside the classification or subclassification of a license' grounds for discipline. § 40-11-260 fixes each group's maximum job size and financial floor. | S-SC-40-11Source S-SC-40-11 — South Carolina General Assembly — Code of Laws Title 40 (Professions and Occupations), Chapter 11 (Contractors) and Chapter 59 (Residential Home Builders)S.C. Code Ann. Title 40, Chapter 11 — Contractors (Contractor's Licensing Board), official unannotated text — S.C. Code Ann. §§ 40-11-20(13), 40-11-110, 40-11-260 (read 2026-10-05) https://www.scstatehouse.gov/code/t40c011.php Retrieved 2026-10-05 · last verified 2026-10-05 Read IN FULL 2026-10-05 directly from the official www.scstatehouse.gov host (status 200). Key sections credited: § 40-11-10 (board created under LLR; nine members, seven licensed contractors + two consumers); § 40-11-20 (definitions — 'contractor', 'general contractor', 'mechanical contractor', 'mechanical construction', 'license classification', 'license group', 'qualifying party', 'total cost of construction', 'net worth', 'working capital'); § 40-11-30 (LICENSING REQUIREMENT — 'No entity or individual may practice as a contractor … for which the total cost of construction is greater than ten thousand dollars for general contracting or greater than ten thousand dollars for mechanical contracting without a license', raised from $5,000 by 2023 Act No. 69 eff. 2023-05-19); § 40-11-100 (administrative penalties ≤$500 first / ≤$1,000 second / ≤$2,500 per day); § 40-11-110 (discipline, incl. (15) failure to maintain net worth/working capital/surety bond and (21) contracting beyond a group or outside a classification); § 40-11-200 (unlicensed practice is a misdemeanor ≤1 year and/or ≤$5,000; no bid or contract without a licence); § 40-11-230 (qualifying party: 70%+ technical exam + 70%+ SC-law exam; primary qualifying party needs 2 years full-time experience within the previous 5 years); § 40-11-240 (entity licensure); § 40-11-250 (ALL licences renew BIENNUALLY, 90-day retroactive grace); § 40-11-260 (net worth/working capital by license group for General AND Mechanical); § 40-11-262 (SURETY BOND in lieu of a financial statement, in the net-worth amount for the group, State of South Carolina as obligee); § 40-11-410 (license classifications — the four General Contractor classifications and the Mechanical subclasses). |
06 Rule: SC-NO-SOLAR
VERIFIED ABSENCE: South Carolina publishes NO standalone solar contractor credential. § 40-59-20(7) lists 'solar panel installers' in the residential REGISTRATION branch (no exam), and § 40-11-410 splits COMMERCIAL solar across existing subclassifications — GC Specialty / Miscellaneous Metals for the panels, GC Roofing or Building for the roof mount, Mechanical Electrical for the wiring. 'reported' because the conclusion is assembled from those lists plus the verified absence of a solar credential.
| Outcome | Conclusion | Caveats |
|---|---|---|
| residential-solar | sc_no_standalone_solar_credential_residential |
|
| commercial-solar | sc_no_standalone_solar_credential_commercial | — |
| not-solar-work | sc_solar_rule_not_triggered | — |
07 Rule: SC-ELECTRICAL-50V
§ 40-11-410's Mechanical Contractor ELECTRICAL subclassification covers work under 600 volts, and work ABOVE 50 volts needs the Mechanical-Electrical (or Public Electrical Utility) subclassification; the same section makes the wiring/connections inside GC Specialty / Miscellaneous Metals (commercial solar) performable only by a licensed Mechanical Contractor with the Electrical subclassification. Research §D: 'Electrical (<600 V; work >50 V needs Electrical or Public Electrical Utility)'.
| Outcome | Conclusion | Caveats |
|---|---|---|
| over-fifty-volts-unlicensed | sc_mechanical_electrical_license_required |
|
| over-fifty-volts-licensed | sc_mechanical_electrical_license_held | — |
| fifty-volts-or-less | sc_electrical_below_fifty_volts | — |
08 Rule: SC-RBC-REGISTERED-SPECIALTY
S.C. Code Ann. § 40-59-20(7): siding, insulation, roofers, floor covering, masons, drywall, carpenters, stucco, painters/wallpaperers and solar panel installers are residential specialty areas issued as REGISTRATIONS — no examination — where the undertaking exceeds $500 and is not regulated by ch. 11.
| Outcome | Conclusion | Caveats |
|---|---|---|
| registration-trade-over-five-hundred | sc_specialty_registration_required |
|
| registration-trade-at-or-below-five-hundred | sc_specialty_registration_not_triggered | — |
| not-a-registration-trade | sc_not_a_registration_specialty_trade | — |
09 Rule: SC-CLB-THRESHOLD
S.C. Code Ann. § 40-11-30: 'No entity or individual may practice as a contractor … for which the total cost of construction is greater than ten thousand dollars for general contracting or greater than ten thousand dollars for mechanical contracting without a license issued in accordance with this chapter.' The figure was raised from $5,000 by 2023 Act No. 69 § 3 (eff. 2023-05-19). Work AT OR UNDER $10,000 needs no CLB licence; the residential track is a separate question (SC-RBC-BUILDER).
| Outcome | Conclusion | Caveats |
|---|---|---|
| commercial-above-threshold | sc_clb_license_required |
|
| commercial-at-or-below-threshold | sc_clb_license_not_required | — |
| residential-track | sc_clb_not_the_residential_track | — |
10 No solar credential — the split answer
| Question | South Carolina answer | Source |
|---|---|---|
| Standalone solar licence? | none exists — verified absence (rule SC-NO-SOLAR) | S-SC-40-11 |
| Residential install? | the no-exam specialty registration — § 40-59-20(7) names solar panel installers (rule SC-RBC-REGISTERED-SPECIALTY) | S-SC-40-59 |
| Commercial install? | GC Specialty / Miscellaneous Metals (panels) + GC Roofing or Building (roof mount) + Mechanical Electrical (wiring above 50 V) — "reported" because assembled (rule SC-ELECTRICAL-50V) | S-SC-40-11 |
| Over $10,000 commercial? | the CLB track applies in every case (rule SC-CLB-THRESHOLD) | S-SC-40-11 |
11 Fees and the credential boundary
| Question | South Carolina answer | Source |
|---|---|---|
| CLB initial / renewal fee | $350 initial, $135 on-time renewal, biennial on 10/31 (surfaced from llr.sc.gov) — rule SC-CLB-FEE | S-SC-CLB-FEES |
| RBB application / licence / renewal | $135 / $220 / $220 — rule SC-RBC-FEE | S-SC-RBC-LICENSURE |
| Residential specialty credential? | licence after exam (plumber/electrician/HVAC) or no-exam registration — rule SC-RBC-SPECIALTY | S-SC-40-59 |
| Is there a standalone solar credential? | no — verified absence (rule SC-NO-SOLAR) | S-SC-40-11 |