Best Solar Energy Companies in Austria
The 46 best Solar Energy companies in Austria in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Enery.
- ResearchAndMarkets.com
- MarketsandMarkets
Our analysis of 100 Solar Energy companies
$30.5b in tracked funding; 83% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Solar Energy companies in Austria
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Enery Developer of solar energy projects | $225M | 20 mo ago | Funding Raised | — | 2019 | WordPressApple iCloud MailMicrosoft 365+24 | — | 1 expansion |
| 2 | Energie Graz Developer of solar and wind energy projects | $4M | 45 mo ago | Funding Raised | — | 2002 | Cart FunctionalityMagentoApple iCloud Mail+14 | — | — |
| 3 | Heliovis Concentrated solar thermal technology developer | $2M | 105 mo ago | Series C | Holger Sindemann Chief Executive Officer | 2009 | — | 111 patents Inflatable solar concentrator systems for floating solar power generation | — |
| 4 | Fresnex Company that provides solar steam generation systems for industrial applications | $1M | 99 mo ago | Funding Raised | — | 2012 | — | 7 patents High‑precision optical mirror modules for telescopic and imaging systems | — |
| 5 | Sunplugged Manufacturer of lightweight, flexible photovoltaic modules for integration into various applications | $1M | 71 mo ago | Public | — | 2007 | — | — | — |
| 6 | Pixel Energy Provider of renewable energy project development, structuring, and financing solutions | $296K | 32 mo ago | Funding Raised | Franz K Co-Founder | 2022 | — | — | — |
| 7 | EET Solar panel & products installation company | $164K | 41 mo ago | Funding Raised | Christoph Grimmer Co-Founder | 2017 | Cart FunctionalityWooCommerceWordPress+27 | — | — |
| 8 | Ertex Solar Provider of solar services for commercial & residential | $116K | 131 mo ago | Funding Raised | Daniel Gutlederer CEO | 2004 | WordPressMySQLSalesforce+31 | — | 1 expansion |
Top 12 Solar Energy companies in Austria
#1
Funding Raised · Vienna, Vienna · founded 2019 · 150 employees$225.2Mraised▾
Developer of solar energy projects
- Dec 2024Conventional Debt$225.2M
#2
Funding Raised · Graz, Styria · founded 2002 · 94 employees$4.3Mraised▾
Die Energie Graz gestaltet und sichert als Energiedienstleister einen wesentlichen Teil der Infrastruktur in der steirischen Landeshauptstadt Graz. Wir versorgen die Grazer:innen mit Strom, Gas und Fernwärme aus einer Hand. Zusätzlich stellen wir unser Know-How in Form innovativer Services und Dienstleistungen, wie Photovoltaik und Elektromobilität, zur Verfügung. Über 350 Mitarbeiter:innen sorgen für die sichere Versorgung unserer Kund:innen mit Energie.
- Nov 2022Grant (prize money)$1.1M
- Sep 2020Grant (prize money)$139.7K
- Feb 2019Grant (prize money)$3.1M
#3
Funding Raised · Linz, Upper Austria · founded 2022$296.4Kraised▾
Provider of renewable energy project development, structuring, and financing solutions. It offers investment models for photovoltaic plants, enabling shared investments. The company supports energy projects by coordinating stakeholders and provides financing options for investors. It manages project implementation from setup to financial aftercare, ensuring investors receive returns. Additionally, it facilitates the sharing and utilization of electricity, promoting independence from traditional energy suppliers. The company offers services for energy communities, assisting with establishment, billing, and administration. It supports project initiators and businesses in modeling and structuring energy solutions and develops software to support the energy transformation process.
- Dec 2023Grant (prize money)$296.4K
#4
Funding Raised · Graz, Styria · founded 2017 · 80 employees$163.8Kraised▾
Solar panel & products installation company
- Mar 2023Grant (prize money)$53.3K
- Jan 2020Grant (prize money)$55.1K
- Aug 2019Grant (prize money)$55.4K
#5
Public · Austria · founded 2007$1.2Mraised▾
Manufacturer of lightweight, flexible photovoltaic modules for integration into various applications. The company develops and manufactures these modules for integration into building envelopes, devices, and vehicles. It has developed a thin-film cell interconnection that allows for the adjustment of photovoltaic module specifications. The company is scaling up its technologies for mass production, including commissioning a roll-to-roll production facility for its solar foil.
- Sep 2020Grant (prize money)$540.9K
- Oct 2019Grant (prize money)$633K
#6
Funding Raised · Leobersdorf, Lower Austria · founded 2012$1.2Mraised▾
Fresnex is a company that specializes in providing innovative solar steam generation systems for industrial applications. They have developed a cheap and easy-to-install solar mirror module that helps generate solar steam for various industries. Their goal is to reduce dependency on fossil fuels and promote sustainable energy solutions.
- May 2018Grant (prize money)$628.5K
- Oct 2017Grant (prize money)$264.2K
- Jan 2017Grant (prize money)$236.1K
- Dec 2015Grant (prize money)$54.6K
#7
Series C · Wiener Neudorf, Lower Austria · founded 2009 · 16 employees$1.7Mraised▾
Heliovis develops, produces and markets the HELIOtube technology which is a lightweight pneumatic solar concentrator, a solar thermal technology. The system acts similar to a high functioning Parabolic Trough Concentrator, at lower costs, that can be used across multiple processes and functions such as process heat, solar cooling, water desalination, enhanced oil recovery as well as the generation of electricity.
- Oct 2017Grant (prize money)$58.1K
- Aug 2016Series C—
- Nov 2015Grant (prize money)—
- Nov 2015Grant (prize money)$1.6M
#8
Funding Raised · Amstetten, Lower Austria · founded 2004$116.4Kraised▾
Manufacturer and distributor of solar modules intended to integrate solar technology into building architecture. The company specializes in the integration of photovoltaic panels into laminated safety glass technology that allows power generation, shading, light control, thermal insulation and façade design, thereby enabling municipalities, energy supply companies, public utilities and property operators to give new functionalities to their building's envelope.
- Sep 2015Grant (prize money)$116.4K
#9
Funding Raised · Bregenz, Vorarlberg · founded 2013 · 6 employees—raised▾
Manufacturer and seller of solar outdoor lighting systems intended for streets and customer-specific micro solar solutions. The company's self-sustaining, solar outdoor lighting products ensure illumination for the respective area.
#10
Funding Raised · Pettenbach, Upper Austria · founded 1945 · 51 employees—raised▾
Global family-owned company specializing in welding, solar energy, and battery charging solutions. The company delivers quality products and innovative solutions across diverse sectors. With a strong emphasis on research and development, they provide cutting-edge technologies for perfect welding, efficient solar energy utilization, and optimized battery charging. Their offerings cater to home owners, business owners, installers, and partners, ensuring a broad reach and impact. They focus on sustainability and long-term success, fostering a culture of innovation and employee empowerment. The company provides solutions for intralogistics, car workshop equipment, and automated welding, demonstrating its versatility and commitment to technological advancement.
#11
Public · Maria Enzersdorf, Lower Austria · founded 1922 · 7229 employees—raised▾
Provider of energy, water, and related services. This includes electricity, natural gas, heating, water supply, and e-mobility solutions for residential, business, and municipal customers. They offer various services such as photovoltaic installations, high-speed internet, and bonus programs. The company also provides support services, including customer service portals and energy efficiency consultations. Additional offerings encompass career opportunities and investor relations.
#12
Acquired · Graz, Styria · founded 1992—raised▾
Solid is a solar engineering company that specialises in large-scale solar thermal energy plants. The company is involved in planning, building, delivering, assembling and operating large-scale solar plants, providing hot water, room heating, industrial process heat and district heating for towns and villages. The company also designs and builds solar chilled water plants and their project sizes are typically in a range from 300 kWt to MW class plants.
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 flat
How research on Solar Photovoltaics is moving in Austria
A read on the academic research around Solar Photovoltaics — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 168 Austria-affiliated papers.
- TU Wien22
- Institute of High Energy Physics19
- Graz University of Technology18
- AEE Institute for Sustainable Technologies17
- Johannes Kepler University of Linz12
- Perovskite (structure)7
- Photovoltaic system6
- Solar energy6
- Energy conversion efficiency5
- Renewable energy5
- Photovoltaic system2→28
- Solar energy1→16
- Solar cell2→9
- Perovskite (structure)1→5
- Optoelectronics2→4
- Photovoltaic system8
- Renewable energy7
- Heterojunction3
- Solar cell3
- Nanotechnology3
Where solar pv is researched across Austria
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.
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.