Best Energy Companies in South Carolina, United States
The 73 best Energy companies in South Carolina, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: SCANA Corporation.
Our analysis of 171 Energy companies
$71.4b in tracked funding; 82% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Energy companies in South Carolina
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | SCANA Corporation Electricity and natural gas distribution company | $110M | 227 mo ago | Acquired | Kevin Marsh CEO | 1924 | — | — | — |
| 2 | Fremont Petroleum Oil and gas production and development company | $23M | 116 mo ago | Public | — | 2006 | — | — | 1 expansion |
| 3 | Alternus Independent power producer, developing utility scale clean energy projects | $21M | 26 mo ago | Public | Vincent Browne Group CEO | 2000 | WordPressPleskMySQL+17 | — | — |
| 4 | Zero Industrial Developer of fully financed thermal energy storage projects | $10M | 14 mo ago | Series A | Ted Kniesche Co-Founder & CEO | 2024 | — | — | 1 job opening |
| 5 | BarberWind Turbines Innovative wind turbine technology for distributed generation, cost-effective and transportable | $8M | 33 mo ago | Series A | — | 2010 | — | — | — |
| 6 | Integrated Environmental Technologies Manufacturer of drag reducing chemicals for transporting oil in pipelines | $4M | 135 mo ago | Public | David LaVance CEO | 2008 | — | — | — |
| 7 | American Eagle Energy Oil exploration and production company | $4M | 154 mo ago | Deadpooled | Bradley Colby CEO & President | 2009 | — | — | — |
| 8 | Colite Technologies Provider of commercial solar installation, renewable lighting, and energy storage solutions | $2M | 86 mo ago | Seed | Kevin O'hara President & CEO | 2016 | WordPressApple iCloud MailMicrosoft 365+30 | — | 1 job opening · 1 partnership |
| 9 | York Electric Provider of electric power and related services to members. 37Growth top 35%Market bottom 43%Funding bottom 36%Tech bottom 36% All 7 signals ▾Growthtop 35% Marketbottom 43% Fundingbottom 36% Techbottom 36% Productbottom 36% Customersbottom 33% Globalbottom 29% Growth: Fresh capital in last 24 mo Market: 40 employees (top 41% of Energy Efficiency) · Top-5,000,000 web property rank vs industry peers · Fliar Intelligence Index 37/100 | $1M | 23 mo ago | Funding Raised | — | 2000 | WordPressMySQLPHP+19 | — | 1 partnership |
| 10 | VBASE Oil Producer of oils and lubricants | $1M | 21 mo ago | Seed | Jeff Dimaio President and CEO | 2021 | — | — | 1 launch |
| 11 | Insulsteel Provider of energy-efficient steel frame system for construction industry | $500K | 127 mo ago | Seed | Steve Bostic CEO | 2004 | — | — | — |
| 12 | Refuel Fuel retailing company | $450K | 116 mo ago | Acquired | — | 2008 | WordPressMySQLPHP+31 | — | 2 expansions |
| 13 | Optima Process Systems Midstream refining company | $169K | 82 mo ago | Seed | Robert Gibbs Co-Founder | 2018 | — | — | — |
| 14 | Thermo-Pur Technologies Manufacturer of high-tensile strength metal components using innovative forming processes. | $100K | 177 mo ago | Seed | Jeff Hesla CEO & President | 2010 | — | — | — |
Top 12 Energy companies in South Carolina
#1
Series A · Charleston, South Carolina · founded 2024$10Mraised▾
Developer of fully financed thermal energy storage projects. It provides a complete suite of development services, from feasibility studies to ongoing operations. This includes equipment selection, project design, permitting, electricity procurement, financing, and project execution. The company manages electricity procurement to secure the lowest cost and cleanest energy sources, minimizing carbon emissions. Projects are fully financed, allowing customers to purchase heat under a Heat-as-a-Service contract. The company also handles project design, construction, and start-up operations, ensuring reliable assets. Post-completion, it offers operational and maintenance services or collaborates with customers who opt for self-management. A disciplined, milestone-based development process ensures alignment with project goals.
- Apr 2025Series A$10M
#2
Public · Fort Mill, South Carolina · founded 2000 · 6 employees$20.5Mraised▾
Alternus Clean Energy is a utility scale transatlantic clean energy independent power producer (IPP) listed on Nasdaq. They develop clean energy projects and have recently completed a business combination with Clean Earth Acquisitions Corp. They are focused on expanding their renewable energy portfolio.
- Apr 2024Post IPO—
- Apr 2021Unattributed$10.7M
- Jun 2019Unattributed$9.8M
#3
Seed · Anderson, South Carolina · founded 2021$1Mraised▾
Producer of oils and lubricants
- Sep 2024Seed$2.5M
#4
Funding Raised · York, South Carolina · founded 2000 · 40 employees$1.1Mraised▾
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- Jul 2024Grant (prize money)$1.1M
#5
Series A · Greenville, South Carolina · founded 2010 · 4 employees$8.4Mraised▾
Innovative wind turbine technology for distributed generation, cost-effective and transportable. This groundbreaking company engineers large wind turbines designed for the distributed wind market, offering a greener and more cost-effective electricity supply. Their revolutionary design eliminates the nacelle and gearbox, reducing purchase, installation, and maintenance expenses. The patent-pending airfoil blades capture a greater percentage of available wind, delivering higher annual electricity output. The lightweight and robust turbine fits into standard containers, enabling installation in previously inaccessible locations. The self-erecting lifting system eliminates the need for giant rental cranes and enhances resilience to severe weather. This technology transforms wind power, providing a productive, transportable, and hurricane-resilient solution for industrial parks, data centers, small communities, farms, ranches, water treatment plants, and other commercial complexes.
- Sep 2023Series A$3.8M
- Jun 2021Series A$2.6M
- Apr 2019Seed$1.8M
- Nov 2014Seed$200K
#6
Acquired · Cayce, South Carolina · founded 1924 · 6000 employees$110Mraised▾
Electricity and natural gas distribution company
#7
Public · Florence, South Carolina · founded 2006 · 42 employees$23.1Mraised▾
Oil and gas production and development company. This entity engages in the exploration, extraction, and development of oil and gas resources. Its operations encompass the entire lifecycle of these resources, from initial exploration and drilling to production and eventual sale. The company's focus is on efficient and responsible resource management.
- Sep 2016Post IPO$1.6M
- Feb 2012Post IPO$21.4M
#8
Public · Little River, South Carolina · founded 2008 · 12 employees$4Mraised▾
Integrated Environmental Technologies Ltd is a US based company engaged in the production of a hypochlorous acid based solution, commonly known as anolyte and anti-oxidizing, mildly alkaline solution, commonly known as catholyte. It markets anolyte under the brand name Excelyte and catholyte under the brand name Catholyte Zero. The group also manufactures equipment to produce Excelyte and Catholyte Zero. It sells the products to customers in the oil and gas industry and in other industries. Its oil and gas customers are located in Utah, New Mexico and Texas and the other customers are located in the geographical regions throughout the US. The firm segments its activitiesmore
- Feb 2015Post IPO$3M
- Sep 2013Post IPO$896.2K
- May 2010Post IPO$94K
#9
Deadpooled · Spartanburg, South Carolina · founded 2009 · 19 employees$4Mraised▾
American Eagle Energy is a US based public company focused on exploration and production of oil. The company has interests in the Bakken and Three Forks shale formations in the Williston Basin.
- Aug 2013Post IPO—
- Jan 2013Post IPO$4M
#10
Seed · Columbia, South Carolina · founded 2016$1.9Mraised▾
Provider of commercial solar installation, renewable lighting, and energy storage solutions. The company delivers complete solar photovoltaic systems, off-grid renewable lighting, and electric vehicle charging equipment. Services include design, engineering, installation, and maintenance. The company assists businesses in securing tax credits, grants, and loans for renewable energy projects.
- Apr 2019Seed$1.9M
#11
Seed · Charleston, South Carolina · founded 2004$500Kraised▾
Provider of energy-efficient steel frame system for construction industry
- Nov 2015Seed$500K
#12
Acquired · Mount Pleasant, South Carolina · founded 2008 · 121 employees$450Kraised▾
Fuel retailing company
- Oct 2016Seed$450K
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Energy coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
How research on Grid Energy Storage is moving in the United States
A read on the academic research around Grid Energy Storage — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 5,941 United States-affiliated papers.
- Electric Power Research Institute204
- Pacific Northwest National Laboratory202
- Argonne National Laboratory193
- Northeastern University151
- Massachusetts Institute of Technology124
- Battery (electricity)57→359
- Electrolyte37→318
- Electrochemistry30→240
- Cathode32→224
- Anode37→209
- Renewable energy40→492
- Battery (electricity)59→507
- Power (physics)8→227
- Electrolyte27→244
- Electrochemistry37→240
- Battery (electricity)35→184
- Renewable energy24→156
- Electrolyte13→114
- Electrochemistry10→80
- Cathode9→72
Where energy storage is researched across United States
Location clusters by institution affiliation — each city's volume, stance tone, and a quick read on its hot topic, what's advancing, the opening opportunity, and the main concern.
Who's filing energy storage patents in the United States
United States energy storage patent filing is accelerating — 8,522 filings from 3,681 assignees (2016–2025), led by General Electric, ESS Technology, GM Global TECH Operations; annual filings 687→1058.
- General Electric592
- ESS Technology276
- GM Global TECH Operations233
- Fastcap Systems205
- UNIV California180
- Rondo Energy157
- United Technologies154
- Battelle Memorial Institute146
Common questions
Riya reads income statements for fun. She covers the real money in a sector — revenue, growth, who actually earns — and never met a vague claim she didn't want a number for.