Best Solar Energy Companies in Austin, United States
The 36 best Solar Energy companies in Austin, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: SolarBridge.
Our analysis of 50 Solar Energy companies
$17.8b in tracked funding; 84% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Solar Energy companies in Austin
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | SolarBridge Manufactures microinverters | $326M | 150 mo ago | Acquired | — | 2004 | WordPressMySQLPHP+17 | 100 patents Advanced solar inverter control, power conditioning, and PLC communication technologies. | — |
| 2 | Treaty Oak Clean Energy Developer of utility scale solar projects 65Funding top 23%Talent bottom 49%Global bottom 48% All 3 signals ▾Fundingtop 23% Talentbottom 49% Globalbottom 48% Funding: Raised $300M across 1 rounds · 1 rounds over 1 yrs (1.0/yr) Talent: 1 named leader on record · 1 C-suite/founder profile curated rank vs industry peers · Fliar Intelligence Index 65/100 | $300M | 13 mo ago | Acquired | Chris Elrod Chief Executive Officer | 2021 | — | — | — |
| 3 | Industrial Sun Developer of solar energy projects | $120M | 42 mo ago | Series C | — | 2016 | — | — | — |
| 4 | Accelergen Developer of renewable power generation and solar energy projects 5Funding bottom 48%Global bottom 29%News bottom 27%Market bottom 12% All 4 signals ▾Fundingbottom 48% Globalbottom 29% Newsbottom 27% Marketbottom 12% Funding: Raised $30.0M across 2 rounds · 2 rounds over 3 yrs (0.7/yr) Global: Single-market focus (United States) rank vs industry peers · Fliar Intelligence Index 5/100 | $30M | 21 mo ago | Series B | — | 2020 | — | — | — |
| 5 | FTC Solar Developer of solar energy power projects 69Patents top 23%Fin. health top 24%Product top 26%Innovation top 38% All 12 signals ▾Patentstop 23% Fin. healthtop 24% Producttop 26% Innovationtop 38% Fundingtop 39% Growthtop 44% Techtop 45% Newstop 49% Marketbottom 47% Moatbottom 47% Globalbottom 44% Partnersbottom 32% Patents: 95 patents matched (strict assignee match) · 70 filings since 2022 vs 23 in 2017-21 Fin. health: Revenue ~$99.7M (FY2024) · Net margin 188.8% rank vs industry peers · Fliar Intelligence Index 69/100 | $15M | 21 mo ago | Public | — | 2017 | DrupalApple iCloud MailMicrosoft 365+25 | 95 patents Design and hardware for solar photovoltaic tracking systems, including frames, cables, and damping. | 1 partnership |
| 6 | Circular Energy Solar installation and financing services services | $12M | 134 mo ago | Deadpooled | — | 2009 | — | — | — |
| 7 | Astrowatt Thin film C-Si solar technology developer | $7M | 156 mo ago | Deadpooled | Dharmesh Jawarani Co-Founder | 2006 | — | 20 patents Advanced semiconductor device fabrication with metal‑containing layers and separation etch techniques. | — |
| 8 | Atonometrics Solar measurement systems leader, enhancing PV performance with innovative sensors | $5M | 25 mo ago | Seed | William Stueve CEO & President | 2007 | WordPressMySQLPHP+27 | 33 patents Photovoltaic panel soiling detection and monitoring using optical and microscopic imaging. | — |
| 9 | ZTRIC Renewable energy solutions provider: solar installations, energy storage, and O&M services | $2M | 29 mo ago | Seed | Jayant Mhetar Co-Founder & CEO | 2015 | WordPressMySQLPHP+23 | — | 1 job opening |
| 10 | Concurrent Design Concurrent Design, Inc. - Engineering Design Services | $1M | 130 mo ago | Acquired | — | 1994 | — | — | — |
Top 12 Solar Energy companies in Austin
#1
Acquired · Austin, Texas · founded 2021 · 20 employees$300Mraised▾
Developer of utility scale solar projects
- Aug 2025Conventional Debt$300M
#2
Series B · Austin, Texas · founded 2020 · 4 employees$30Mraised▾
Developer of renewable power generation and solar energy projects
- Dec 2024Conventional Debt$20M
- May 2023Series B$30M
#3
Public · Austin, Texas · founded 2017 · 221 employees$15Mraised▾
Developer of solar energy power projects
- Dec 2024Post IPO$15M
#4
Series C · Austin, Texas · founded 2016 · 45 employees$120Mraised▾
Developer of solar energy projects
- Feb 2023Series C$90M
- Jan 2022Series B$30M
#5
Seed · Austin, Texas · founded 2007 · 11 employees$4.6Mraised▾
Solar measurement systems leader, enhancing PV performance with innovative sensors. The company specializes in designing and manufacturing advanced sensors for solar energy installations. Their products support a wide array of PV performance assessment and monitoring applications, including module power measurement, I-V data analysis, soiling detection, and irradiance monitoring. They offer solutions like in-situ I-V measurement devices, optical soiling sensors, PV reference cells, and meteorological sensors. These technologies cater to module power, irradiance, and soiling measurement needs, ensuring optimal performance and minimizing degradation. Their innovative and proprietary products are protected by multiple patents, reflecting their commitment to technological advancement in the solar energy sector. They provide critical tools for performance optimization and monitoring in solar energy applications.
- Jul 2024Grant (prize money)$199.7K
- Jun 2020Grant (prize money)$1.3M
- Jul 2019Grant (prize money)$1.3M
- Jan 2012Seed—
#6
Acquired · Austin, Texas · founded 2004 · 79 employees$326Mraised▾
Manufactures microinverters. Company manufactures microinverter and monitoring solutions. company specializing in the development and manufacturing of microinverter solutions for photovoltaic (solar) panels. The company's mission is to facilitate the adoption of rooftop solar power by making solar systems simpler, more reliable, and more cost-effective.
- Mar 2014Series E$42M
- May 2012Series D$250M
- Feb 2012Grant (prize money)$1.1M
- Sep 2011Grant (prize money)—
#7
Seed · Austin, Texas · founded 2015$2Mraised▾
Renewable energy solutions provider: solar installations, energy storage, and O&M services. The company develops custom renewable energy solutions, offering end-to-end services encompassing hardware, installation, and customer support. Specializing in on-grid and off-grid solar facilities, they cater to industrial, commercial, and residential clients with rooftop/ground-mounted solutions. They provide tailored energy storage solutions for electric vehicles, off-grid installations, and UPS. Their dedicated maintenance team offers comprehensive operational and maintenance support for solar power plants through continuous monitoring and effective troubleshooting. They focus on clean energy access, cost reduction, and environmental stewardship. They offer remote monitoring, proactive service, and extended warranties. The company builds or buys renewable assets, solar and storage, that can generate or store clean electricity.
- Mar 2024Seed$6.1M
#8
Deadpooled · Austin, Texas · founded 2009 · 9 employees$12.2Mraised▾
Circular Energy is a full-service solar design-installation company catering service to homeowners and commercial property owners The company also offers financing, capital solutions, capital and operational lease.
- Jun 2015Series A$3M
- Oct 2014Series A$5.5M
- Jun 2013Series A$2.7M
- Sep 2012Seed$327.9K
#9
Deadpooled · Austin, Texas · founded 2006$6.6Mraised▾
Astrowatt was a developer of thin film crystalline silicon solar panels at an efficiency of 15%. The company claimed that the substrates of the solar cell was 25 to 50 microns thick and used 0.22 grams per watt of silicon. The target was to reach a cost of $0.30 per watt, compared to then current costs of $0.70 to $0.80 per watt. Currently the company is not active.
- Sep 2013Grant (prize money)$1.6M
- Oct 2011Grant (prize money)$1.5M
- Oct 2011Series A$5M
- Sep 2011Grant (prize money)$1.6M
#10
Acquired · Austin, Texas · founded 1994 · 20 employees$1Mraised▾
Concurrent Design provides custom machine for manufacturing tools and automation machinery which includes solar equipment testing machines among a lot of other like Tolerance analysis, Material selection, Volume production scale-up integration etc. The company also offers solar manufacturing equipment for product development.
- Nov 2015Grant (prize money)$1M
#11
Seed · Austin, Texas · founded 2010$50Kraised▾
Publisher of a community-focused quarterly magazine. It features local news, stories, and events, celebrating the diversity of its community. The magazine aims to provide a platform for underrepresented voices and strengthen community bonds through informed participation. Content focuses on local artists, people, and happenings, maintaining political neutrality while supporting local businesses. The publication is distributed through key businesses and community centers.
- Oct 2011Seed$50K
#12
Late Stage · Austin, Texas · founded 2009—raised▾
Offers consulting, advisory and due diligence services to the energy industry
- Jun 2024PE—
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Solar Energy coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
What Austin researches in solar pv
- The University of Texas at Austin32
- IBM Research - Austin1
Common questions
Rohit lives in the feed. He covers what's moving right now — the funding rounds, launches and shifts breaking across the trade press — and ties them back to where the sector is heading.