Best Environment Companies in Tallinn, Estonia
The 35 best Environment companies in Tallinn, Estonia in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Sunly.
Our analysis of 309 Environment companies
$75.8b in tracked funding; 79% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Environment companies in Tallinn
| # | Company | Revenue | Disclosed funding | Employees | Founded | Tech stack | Web popularity | Recent signals |
|---|---|---|---|---|---|---|---|---|
| 1 | Enefit Developer of wind energy projects | $71M FY2023 | — | — | 1939 | Node.jsTailwind CSSNext.js App Router+20 | Top 5M | — |
| 2 | EG Ehitus Provider of water supply and sewerage services | $35M FY2023 | — | 110 | 2004 | WordPress Block EditorVisual ComposerwpBakery+25 | Top 50M | — |
| 3 | Eesti Gaas Developer of solar energy projects | $29M FY2023 | — | 240 | 1865 | — | — | — |
| 4 | Enefit Green Developer & producer of wind, solar, and biomass energy | $6M FY2023 | $345M | — | 2016 | Node.jsTailwind CSSNext.js App Router+18 | Top 10M | — |
| 5 | Balti Puurkaev Offers infrastructure development services | $6M FY2023 | — | 17 | 2008 | WordPressMySQLPHP+12 | Top 10M | — |
| 6 | Roofit.solar Developer of building-integrated solar modules | $6M FY2023 | $18M | 80 | 2016 | WordPressMySQLPHP+21 | Top 5M | — |
| 7 | Example Company Trader of recycled plastics and other waste materials | $3M FY2023 | — | — | 2000 | — | — | — |
| 8 | Nomine Consult Provider of energy, engineering, and environmental advisory services | $1M FY2023 | — | 13 13 → 23 (+77%) | 1993 | — | — | — |
| 9 | Airexa Provider of ventilation, cooling, and HVAC systems | $1M FY2023 | — | 1 | 2018 | — | — | — |
| 10 | WSG Engineering Provides reliable electrical solutions, including outdoor and indoor electrical work, solar park… | $1M FY2023 | — | 8 | 2020 | — | — | — |
| 11 | Greenbit.Energy Independent power producer in the wind and solar sector | $954K FY2022 | — | 6 | 2019 | — | — | — |
| 12 | Algrades Offers advanced solutions for various industries, leveraging the expertise of top engineering professionals | $726K FY2023 | — | 3 | 2021 | — | — | — |
| 13 | Kwota Provider of CO2 emission savings services | $559K FY2022 | $2M | 8 | 2021 | — | — | — |
| 14 | UBIK Solutions Manufacturer of solar powered products | $393K FY2021 | $57K | 1 | 2011 | — | — | — |
| 15 | Consultare Provider of environmental consulting services | $267K FY2023 | — | 2 | 2010 | — | — | — |
Top 9 Environment companies in Tallinn
#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
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
#3
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—
#4
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
#5
Seed · Tallinn, Harju County · founded 2021 · 8 employees$1.7Mraised▾
Operator of a carbon credits marketplace intended to offer digital validation and trading of recycled material carbon emission savings. The company offers an advantage for material producers for using recycled materials, enabling clients to reduce carbon dioxide emissions that also significantly increase material reuse.
- Apr 2022Seed$1.7M
#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
Acquired · Tallinn, Harju County · founded 2005 · 33 employees—raised▾
Nelija Energia (also known as 4Energia) is a Renewable Energy developer using the four primary sources, wind, solar, biomass and hydro. Nelja Energia owns and operates eleven wind farms in Estonia with the total capacity of 140.8 MW, and four wind farms in Lithuania with the total capacity of 78.9 MW. In addition, the company operates two biogas-fuelled co-generation plants in Estonia. The company claims to have nearly 1200 MW of project under development majorly in Wind. Total on-shore projects are for 120 MW and offshore of 1100 MW.
- 2011Series A—
#9
Acquired · Tallinn, Harju County · founded 1967 · 375 employees—raised▾
Integrated service provider for drinking and waste water system
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Environment coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
How research on Environmental Monitoring is moving in Estonia
A read on the academic research around Environmental Monitoring — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 51 Estonia-affiliated papers.
- Estonian University of Life Sciences12
- Tallinn University of Technology10
- University of Tartu9
- Ministry of Agriculture5
- Ministry of the Environment4
- Trophic level4
- Tracking (education)4
- Mesocosm4
- Foraging4
- Habitat4
- Habitat4
- Abundance (ecology)4
- Distribution (mathematics)3
- Environmental resource management2
- Baltic sea2
- Underwater6
- Biodiversity4
- Citizen science4
- Scale (ratio)4
- Environmental resource management3
Where environmental monitoring 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.