Best Energy Companies in Estonia
The 147 best Energy companies in Estonia in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Sunly.
$1.0 billion in disclosed funding across 147 Energy companies in Estonia makes this one of the more concentrated clean-energy bets in the Baltics, and this directory ranks them by equity raised and recent funding momentum. The capital isn't spread evenly. Sunly alone accounts for $624 million of that pool, and Enefit Green sits at $345 million, meaning two names are carrying most of the weight before you even reach the rest of the field. VOOL, Roofit.solar, Kik, and Solarstone fill out the top tier, but their funding totals are measured in single-digit millions, not hundreds.
So what's actually moving underneath the headline number? Solar electricity generation, solar PV, and EV battery technology are the themes drawing the most coverage right now, and energy-sector app installs are running at roughly 28% YoY growth across 138 tracked products, which tells you where the distributed-energy infrastructure buildout is heading. I'd also watch the grid-edge readiness signals coming out of Europe, because Estonia's regulatory push toward flexible loads and distributed energy resources is giving local players a structural tailwind that pure funding figures don't fully capture. The most active backers here, Europa, EIC Fund, and United Partners, aren't writing speculative checks. They're tracking earned position in a market that green energy is increasingly reframing as an AI-infrastructure advantage.
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 Estonia
| # | Company | Revenue | Disclosed funding | Employees | Founded | Founder | Tech stack | Recent signals |
|---|---|---|---|---|---|---|---|---|
| 1 | Gren Provider of sustainable district heating, district cooling, and industrial energy | $44M FY2023 | — | 350 | 1999 | Ilkka Niiranen Chief Executive Officer | WordPressApple iCloud MailMicrosoft 365+17 | 1 expansion |
| 2 | Eesti Varude Keskus Provider of oil storage services | $33M FY2023 | — | 10 | 2021 | — | — | — |
| 3 | Eesti Gaas Developer of solar energy projects | $29M FY2023 | — | 240 | 1865 | Ants Noot CEO | — | — |
| 4 | EcoMetal Provider of lead acid battery recycler and metal extraction services | $27M FY2023 | — | — | 1999 | Toomas Koobas CEO | — | — |
| 5 | Kik Focuses on promoting sustainable development and environmental protection by providing information… | $11M FY2023 | $11M | 95 | 2000 | Andrus Treier CEO | DrupalApple iCloud MailTypeScript+17 | 1 partnership · 1 expansion |
| 6 | Enefit Green Developer & producer of wind, solar, and biomass energy | $6M FY2023 | $345M | — | 2016 | Aavo Karmas CEO | Node.jsTailwind CSSNext.js App Router+18 | — |
| 7 | Roofit.solar Developer of building-integrated solar modules | $6M FY2023 | $18M | 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 | Solarstone Building integrated solar panels | $3M FY2023 | $10M | 22 22 → 24 (+9%) | 2015 | Silver Aednik Co-Founder & CEO | StatamicPHPLaravel+22 | — |
| 10 | Amperia Provider of HVAC servicing, fire fighting equipment maintenance, and electrical installation management… | $2M FY2023 | — | 11 | 2012 | — | — | — |
| 11 | Baltic Power Engineering Project developer and service provider | $963K FY2023 | — | 2 | 2009 | Toomas Koovit CEO | — | — |
| 12 | Algrades Offers advanced solutions for various industries, leveraging the expertise of top engineering professionals | $726K FY2023 | — | 3 | 2021 | — | — | — |
| 13 | UBIK Solutions Manufacturer of solar powered products | $393K FY2021 | $57K | 1 | 2011 | — | — | — |
| 14 | Elektriteenus Company providing electricity solutions and services, offering a range of products and packages to… | $301K FY2023 | — | 1 | 2011 | — | — | — |
| 15 | 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 Estonia
#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
Funding Raised · Tallinn, Harjumaa · founded 2000 · 95 employees$10.5Mraised▾
Keskkonnainvesteeringute Keskus (KIKEE) is a non-profit organization focused on promoting sustainable development and environmental investment in Estonia. The organization provides education, training, and consulting services to help businesses and individuals adopt environmentally friendly practices. With a strong emphasis on biodiversity and climate protection, KIKEE aims to create a more sustainable future for Estonia and the world.
- Mar 2023Grant (prize money)$10M
- Nov 2021Grant (prize money)$190.8K
- Apr 2019Grant (prize money)$331.7K
#6
Series A · Viljandi, Viljandi County · founded 2015 · 22 employees$10.2Mraised▾
Building integrated solar panels
- Jul 2022Series A$10.2M
- Aug 2019Seed—
#7
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
#8
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
#9
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
#10
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
#11
Series A · Tallinn, Harju County · founded 2016 · 43 employees—raised▾
Manufacturer of electricity generators
#12
Funding Raised · Tallinn, Harju County · founded 2010—raised▾
Independent transmission system operator for electricity and natural gas
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.