Is plug-in solar legal in South Carolina? (2026)
South Carolina has no law that specifically addresses plug-in solar as of 2026-09-20. That is not the same as illegal. It means no statute answers the question either way, so your utility's rules are the ones to check.
Not addressed
South Carolina has no plug-in solar law; a 2026 balcony solar panel bill (H. 4579) never left committee before the regular session ended in May 2026.
- Watt cap
- —
- Permit
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- Interconnection
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- Utility notice
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- Equipment
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- Law
- —
- Signed
- —
- Effective
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Official sources
- scstatehouse.govwww.scstatehouse.gov/sess126_2025-2026/bills/4579.htm
- scstatehouse.govwww.scstatehouse.gov/code/t02c001.php
- scstatehouse.govwww.scstatehouse.gov/sess126_2025-2026/bills/883.htm
Research notes
H. 4579 'Balcony Solar Panels' (Rep. Burns) prefiled 2025-12-16, introduced 2026-01-13, still in House Labor, Commerce and Industry. The bill would bar deeds/HOA documents/leases and the State from prohibiting balcony solar panels; it contains NO watt cap and NO utility interconnection exemption (read the bill text). Secondary sources describe H 4579 as a 'Plug-In Solar Device Access Act' by Rep. Robbins exempting devices from interconnection — that description does not match the official bill and is wrong. The regular session must adjourn sine die by the second Thursday in May (S.C. Code 2-1-180; 2026-05-14); the 2026 sine die resolution (S. 883) limits post-May-14 business to budget, vetoes, appointments, pre-existing conference reports, redistricting, etc. — S. 883 itself shows 'in conference committee' on its page, but under either path H. 4579 is not eligible, and the 126th General Assembly (2025-2026) ends in 2026, so the bill is dead.
“—” means our record has no sourced value · Not legal advice
If you rent
Without a state law, you need two yeses: your landlord’s, and your utility’s. Start with the utility, because a landlord will ask whether it’s allowed. Ask these three questions and get the answers in writing:
- “Do you have an interconnection requirement for a plug-in solar device under 1,200 watts with a UL-listed inverter?”
- “If it never sends power back to the grid, does that change your answer?”
- “Can you send me that in writing, or point me to the tariff section?”
If you get a written answer, send it to hello@mlighthouse.com. We’ll add it to this page with the utility named and you left out.
If you own your home
You have the same utility question as a renter, and one more option: a conventional rooftop or ground-mount system goes through your utility’s standard interconnection process instead. It costs more and takes longer, but the rules are written down.
What an 800 W kit makes in South Carolina
A railing-mounted panel hangs close to vertical, so it makes less than a tilted rooftop panel. These figures use a vertical panel on purpose.
Yearly output
718
kWh / year
800W, south-facing railing, no shade
Electricity rate
15.65
¢ / kWh
EIA, 2025-07 to 2026-06
Yearly savings
$90
per year, before kit cost
assumes 80% self-use
Sun
5.18
peak sun hours / day
optimal tilt, Columbia
Output is modeled at Columbia with PVGIS 5.3, European Commission Joint Research Centre, ERA5 weather data.
Kits sold in the US
These kits are sold in the US. We rank them on published specs, certification and price and have not tested them. South Carolina has no plug-in solar law yet, so ask your utility before you connect one.
Some links in this section are affiliate links. We earn a commission if you buy through them, at no extra cost to you.
Lowest cost per watt
Bright Saver Balcony 360 W
360 W
Two panels and a 360 W microinverter, sold at cost by a nonprofit. The cheapest way into plug-in solar we can find, and the only kit here whose inverter is described against UL 3700.
- Panels
- Two 180 W panels, 46 × 34 in, 11 lb each
- Certification
- Inverter listed as “UL 3700 compliant” (Hoymiles HiFlow Pro LV)
- Warranty
- 12-year inverter warranty
- Price
- $414.17 as of 2026-09-22
At-cost price from a 501(c)(3) nonprofit, not a retail price.
Bright Saver is a nonprofit we cover editorially. We earn nothing from this link.
Built-in battery
EcoFlow STREAM Ultra
800 W
800 W of on-grid output with 1.92–11.52 kWh of storage, so power made in the afternoon can run the evening. Pairing it with the STREAM Microinverter raises output to 1,200 W.
- Panels
- Not included
- Certification
- “UL1741-Certified & IEEE1547-Certified”
- Warranty
- 10 years
- Price
- Not published
EcoFlow lists no price until you configure the system.
Panels are not included, and EcoFlow's own page says plug-and-play use is currently available only in Utah, under H.B. 340.
Complete kit on Amazon
PluggedSolar 800 W Plug and Play
800 W
A complete kit sold as one box on Amazon. The panels sit in the sun and the cord goes to an outlet, so nothing is hard-wired.
- Panels
- Four 200 W panels, with a microinverter and a 50 ft cord
- Certification
- “UL 1741 code compliant for anti-islanding safety protection” (pluggedsolar.com); no lab listing published
- Warranty
- Not published
- Price
- $1,395.00 as of 2026-09-22
Amazon price read through the Creators API.
PluggedSolar publishes no lab listing for this kit and no warranty term we could find. Its Amazon listing estimates 1,500 kWh a year, which assumes panels angled at the sun.
We earn a commission if you buy through this link. It costs you nothing extra.
Most power
Craftstrom 1200 W Plug-in Solar Kit
1,200 W
Six panels and three 350 W microinverters with a smart power meter, for a yard, fence or long deck. The most output of anything here, at the highest price per watt.
- Panels
- Six 200 W bifacial semi-flexible panels
- Certification
- Inverters “ETL-certified to UL 1741 and IEEE 1547”
- Warranty
- 10 years on panels, inverters and power meter
- Price
- $3,309.00 as of 2026-09-22
Listed by the reseller My Own Watts.
Craftstrom sells through dealers, so prices differ by seller. We have no affiliate relationship with any of them.
- Anker SOLIX sells balcony systems in Europe, not in the US. We'll add them when a US model ships.
Questions about South Carolina
Is plug-in solar legal in South Carolina?
South Carolina has no law that specifically addresses plug-in solar as of 2026-09-20. That is not the same as illegal. It means no statute answers the question either way, so your utility's rules are the ones to check.
How much could an 800W kit save in South Carolina?
About $90 a year, before the kit's cost, for an unshaded 800W panel on a south-facing railing at 15.65¢/kWh. That assumes you use 80% of what it makes. Run the calculator for your own numbers.