Best Energy Companies in Harju County, Estonia
The 69 best Energy companies in Harju County, Estonia in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Sunly.
Our analysis of 441 Energy companies
$135.1b in tracked funding; 76% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Energy companies in Harju County
| # | Company | Disclosed funding | Revenue | Employees | Founded | Founder | Tech stack | Recent signals |
|---|---|---|---|---|---|---|---|---|
| 1 | Harju Elekter Distributor of electricity | — | $72M FY2023 | 988 | 1968 | Tomas Prusas CEO | WordPressApple iCloud MailMicrosoft 365+21 | — |
| 2 | Enefit Developer of wind energy projects | — | $71M FY2023 | — | 1939 | — | Node.jsTailwind CSSNext.js App Router+20 | — |
| 3 | Eesti Varude Keskus Provider of oil storage services | — | $33M FY2023 | 10 | 2021 | — | — | — |
| 4 | Eesti Gaas Developer of solar energy projects | — | $29M FY2023 | 240 | 1865 | Ants Noot CEO | — | — |
| 5 | Elenger Marine Provider of LNG bunkering operations | — | $24M FY2023 | 1 | 1864 | — | — | — |
| 6 | Enefit Green Developer & producer of wind, solar, and biomass energy | $345M | $6M FY2023 | — | 2016 | Aavo Karmas CEO | Node.jsTailwind CSSNext.js App Router+18 | — |
| 7 | Roofit.solar Developer of building-integrated solar modules | $18M | $6M FY2023 | 80 | 2016 | Raimond Russak Co-Founder | WordPressMySQLPHP+21 | 1 partnership |
| 8 | AdNext Company that specializes in the production and trade of rapeseed and biodiesel products, as well as providing… | — | $5M FY2023 | 2 | 2013 | — | — | — |
| 9 | Morek Company provides electrical connector products | — | $5M FY2022 | — | 2004 | — | WordPressMySQLPHP+26 | 1 job opening · 3 launchs |
| 10 | IMD Engineering Provides industrial engineering services and equipment and spare parts supplier | — | $2M FY2023 | 7 | 2012 | Kirill Vojevodin Owner | — | — |
| 11 | HeatConsult OÜ Company specializing in state-of-the-art designs for district heating and district cooling networks… | — | $2M FY2023 | 17 | 2011 | — | — | — |
| 12 | Amperia Provider of HVAC servicing, fire fighting equipment maintenance, and electrical installation management… | — | $2M FY2023 | 11 | 2012 | — | — | — |
| 13 | Baltic Power Engineering Project developer and service provider | — | $963K FY2023 | 2 | 2009 | Toomas Koovit CEO | — | — |
| 14 | Greenbit.Energy Independent power producer in the wind and solar sector | — | $954K FY2022 | 6 | 2019 | — | — | — |
| 15 | Algrades Offers advanced solutions for various industries, leveraging the expertise of top engineering professionals | — | $726K FY2023 | 3 | 2021 | — | — | — |
| 16 | Fillenergi Company that sells a range of products, primarily focusing on heating pellets, industrial wood, coal, oils… | — | $642K FY2023 | 3 | 2012 | — | — | — |
| 17 | Europellet Wood pellet supplier that offers pellets for various industries, with a focus on providing efficient and… | — | $436K FY2023 | 1 | 2016 | — | WordPressMySQLPHP+19 | — |
| 18 | UBIK Solutions Manufacturer of solar powered products | $57K | $393K FY2021 | 1 | 2011 | — | — | — |
| 19 | Elektro Nordic OU Manufacturer and supplier of electronic components and materials | — | $348K FY2022 | 2 | 2011 | — | — | — |
| 20 | Elektriteenus Company providing electricity solutions and services, offering a range of products and packages to… | — | $301K FY2023 | 1 | 2011 | — | — | — |
| 21 | AGEOS TRADING Company providing wholesale trade services for various goods, with a team of experienced professionals… | — | $259K FY2023 | 1 | 2022 | — | — | — |
Top 12 Energy companies in Harju County
#1
Series C · Tallinn, Harju County · founded 2018 · 89 employees$624.5Mraised▾
Developer of solar energy projects
- Dec 2024Series C$63M
- Aug 2024Conventional Debt$335M
- Jun 2023Conventional Debt$32.4M
- Oct 2022Conventional Debt$194M
#2
Seed · Tallinn, Harju County · founded 2018 · 30 employees$3.6Mraised▾
EV charging solution. It offers reliable, smart, and cost-effective charging for both business and private customers. It provides chargers that are efficient, save money, and have a sleek design.
- May 2025Seed$1.7M
- May 2024Seed$323.1K
- Sep 2023Seed$1.4M
- Sep 2023Grant (prize money)$1.7M
#3
Funding Raised · Tallinn, Harju County · founded 2016$345.4Mraised▾
Developer & producer of wind, solar, and biomass energy
- Sep 2023Conventional Debt$193.3M
- Dec 2021Grant (prize money)$608K
- Nov 2021Grant (prize money)$3M
- Oct 2021Grant (prize money)$3.8M
#4
Series A · Tallinn, Harju County · founded 2016 · 80 employees$17.9Mraised▾
Developer of building-integrated solar modules
- Mar 2023Series A$6.8M
- Mar 2023Grant (prize money)$2.1M
- Oct 2021Series A$9.1M
- Nov 2019Series A—
#5
Series A · Tallinn, Harju County · founded 2019 · 40 employees$3.1Mraised▾
Developer of nuclear energy project
- Mar 2023Series A$1.8M
- Jun 2021Seed$1.2M
#6
Funding Raised · Tallinn, Harju County · founded 2005$762Kraised▾
Solintel is a company that specializes in off-grid smart street lights powered by solar energy. They offer sustainable solutions for lighting in smart cities and have partnerships with companies in Greece and Cyprus. They also provide specialized consulting services for obtaining telecommunications licenses and managing businesses in Brazil.
- Oct 2016Grant (prize money)$762K
#7
Deadpooled · Tallinn, Harju County · founded 2011 · 1 employees$56.9Kraised▾
Developer of micro and string inverters for photovoltaics designed to offer smart and efficient power conversion and renewable energy management. The company's power electronic technology allows the combination of the key advantages of the PV microinverters and PV power optimizers in just one device that makes solar energy easy available, enabling clients to efficiently develop portfolios of distributed energy projects and accelerate the deployment of distributed renewable energy.
- Feb 2019Grant (prize money)$56.9K
#8
Funding Raised · Tallinn, Harju County · founded 2019 · 4 employees$19Kraised▾
Developer of an energy-tracking platform designed to track the outcome of GHGs with granularity and traces a carbon-neutral cargo's compensation activities and status. The company's platform unlocks the possibility of splitting the task of reaching an LNG carbon-neutral cargo by providing a solution for multi actors to decarbonize a cargo, enabling clients to have access to a single origin of truth to provide LNG buyers and sellers with a decentralized interoperable view of carbon-neutral LNG.
- Jul 2021Grant (prize money)$19K
#9
Series A · Tallinn, Harju County · founded 2016 · 43 employees—raised▾
Manufacturer of electricity generators
#10
Funding Raised · Tallinn, Harju County · founded 2010—raised▾
Independent transmission system operator for electricity and natural gas
#11
Late Stage · Tallinn, Harju County · founded 2002—raised▾
Bestair is an innovative company in Europe that focuses on providing energy-saving heating and cooling solutions. They are driven by a vision of a world that utilizes energy-saving solutions and are expanding their use in Europe.
- Jan 2022PE—
#12
Funding Raised · Tallinn, Harju County · founded 1998—raised▾
Developer of battery test cells technology focused on sealed electrochemical cells for testing lithium-ion and air battery systems. The company offers products including electrochemical test cells, rechargeable batteries and other related products that allow assembly of electrochemical test cells with various configurations for characterization of aprotic, aqueous and combined chemistries, allowing researchers to quickly and reproducibly test electrode materials and electrolytes on a lab scale.
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 Estonia
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 57 Estonia-affiliated papers.
- Tallinn University of Technology38
- University of Tartu12
- Estonian University of Life Sciences5
- Ministry of Agriculture3
- Skeleton Technologies1
- Battery (electricity)4
- Renewable energy4
- Power (physics)4
- Microgrid3
- Converters3
- Battery (electricity)16
- Photovoltaic system8
- Renewable energy7
- Electrical engineering6
- Electrode5
- Photovoltaic system1
- Sizing1
- Rooftop photovoltaic power station1
- Quality (philosophy)1
- Photovoltaics1
Where energy storage is researched across Estonia
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
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.