Best Energy Companies in Stockholm, Sweden
The 81 best Energy companies in Stockholm, Sweden in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Elvy Energy.
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 Stockholm
| # | Company | Last round | Disclosed funding | Employees | Founder | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|
| 1 | addtech Addtech Components markets and sells components and sub-systems in mechanics. | — | — | 4,108 | — | TYPO3 CMSPHPBootstrap+11 | — | — |
| 2 | Addtech Provider of electrical safety products & electrical installation services | — | — | — | Niklas Stenberg President & CEO | TYPO3 CMSPHPBootstrap+13 | — | — |
| 3 | Aligera Independent power producer | — | — | — | Jorgen Bender Founder & CEO | — | — | — |
| 4 | Baselight Manufacturer of LED lighting system | — | — | — | Andrej Dahllof Founder & CEO | — | — | — |
| 5 | Biogas Upgrading Modules Provider of upgrading solutions for biogas technologies | — | — | — | Petr Vasiliev Co-Founder & CEO | — | — | — |
| 6 | Biotisk Energier Provider of a digital currency price tracking application | — | — | — | Tareq Jaber Founder | — | — | — |
| 7 | Bright Sunday Developer of solar energy projects | — | — | 12 | Erik Strandberg Group Chief Financial Officer (Co-founder) | WordPressMySQLPHP+30 | — | — |
| 8 | Bruks Siwertell Manufacturer of dry bulk handling and wood processing systems | — | — | 1 | — | DrupalPHPSalesforce+16 | — | — |
Top 12 Energy companies in Stockholm
#1
Series A · Stockholm, Stockholm County · founded 2023$592.9Mraised▾
Provider of fixed-price energy subscriptions including solar, heat pump, battery. The subscriptions cover installation, service, maintenance, and repairs for a fixed monthly cost. The service includes energy analysis to determine the optimal energy system. The subscriptions aim to reduce energy costs and increase energy independence.
- May 2026Series A$6.9M
- Dec 2025Conventional Debt$585.9M
#2
Series C · Stockholm, Stockholm County · founded 2013$7.3Mraised▾
Blykalla is a Swedish deep-tech startup that is developing and building small modular reactors to deliver clean, safe, and scalable base load power. They are at the forefront of technological innovation in the energy sector and are focused on industrializing leading research.
- Dec 2025Series C$50M
- Feb 2025Series B$15.7M
- Feb 2025Grant (prize money)$2.6M
- Apr 2024Series A$7.3M
#3
Series A · Stockholm, Stockholm County · founded 2019 · 19 employees$8.6Mraised▾
Developer nuclear energy projects
- Mar 2025Series A$10.9M
- Aug 2023Seed$5.4M
- Dec 2022Seed$3.1M
- Dec 2022Grant (prize money)—
#4
Series A · Stockholm, Stockholm County · founded 2023$501.7Kraised▾
Geoffrey's Malibu offers an oceanside dining experience to escape the stresses of life. Geoff Tate is an American singer, songwriter, and wine maker. Geoffrey Moore provides custom search features for navigating the Palm Springs real estate market.
- Jan 2026Series A$10M
- Dec 2024Seed$2.5M
- Jul 2024Seed$501.7K
#5
Acquired · Stockholm, Stockholm County · founded 2013 · 132 employees$39.4Mraised▾
Manufacturer of solar roof tiles or building integrated photovoltaic tiles. It uses monocrystalline solar cells sandwiched between two large sheets of glass which reduces the number of connections and makes it cheaper.
- Jan 2023Series A$14.6M
- Sep 2022Series A$15.2M
- Apr 2021Seed$5.4M
- Dec 2020Seed$1.8M
#6
Public · Stockholm, Stockholm County · founded 2007 · 5 employees$12.5Mraised▾
Developer of X-ray systems for biomass and pulp analysis. These systems provide real-time analysis of moisture and ash content in various materials, enabling optimized industrial processes. The technology improves efficiency and reduces waste in bioenergy and pulp and paper production. Products include the Biomass Analyzer for biomass quality assessment and the FlowScanner for real-time wood chip analysis in pulp production. The company partners with manufacturers for production.
- May 2018Grant (prize money)$1.9M
- Apr 2016Series A$1.2M
- Mar 2015Grant (prize money)$1.8M
- Jun 2013Series A$4.6M
#7
Deadpooled · Stockholm, Stockholm County · founded 1987 · 1 employees$20Mraised▾
Developer of manufacturing technology for biofuels. The company provides a proprietary black liquor gasification technology that can be used to convert pulp and paper mills into biorefineries. The company's processing technology is used to create a synthetic gas product that can be converted into low-carbon fuels and chemicals, such as synthetic gasoline & diesel.
#8
Funding Raised · Stockholm, Stockholm County · founded 2012$595.2Kraised▾
Developer of biofuels and bioplastics from lignin. It converts lignin, a byproduct of the forest industry, into renewable lignin oil (Lignol®) using a patented, energy-efficient process. This Lignol® can be refined into a fossil-free drop-in fuel for gasoline, diesel, and jet engines. Additionally, the company's patented technology transforms lignin into bio-based plastics, offering alternatives to fossil-based plastics. These bioplastics are technically equivalent to their fossil counterparts but have a reduced carbon footprint.
- Dec 2023Grant (prize money)$480K
- Nov 2018Grant (prize money)$56.9K
- Jun 2018Grant (prize money)$58.3K
#9
Acquired · Stockholm, Stockholm County · founded 2013 · 43 employees$14Mraised▾
Developer of solar energy projects
- May 2017Series B$11.3M
- Oct 2015Series A$2.7M
#10
Series A · Stockholm, Stockholm County · founded 2009 · 31 employees$12.1Mraised▾
Developer of floating wind energy projects
- Apr 2016Series A$3.1M
- Nov 2014Series A$7.5M
- Sep 2014Series A$1.6M
#11
Public · Stockholm, Stockholm County · founded 2002 · 4 employees$7.5Mraised▾
Provider of online casino games and sports betting. This platform offers a variety of games, including traditional card games, slots, and mini-games. It also features online sports betting with various betting options. The platform emphasizes a user-friendly interface, advanced security measures to protect user data and funds, and efficient transaction processing for deposits and withdrawals. The platform also includes features such as secure account registration and password recovery options.
- Jul 2017Post IPO$2M
- Feb 2014Post IPO$425K
- Feb 2014Post IPO$240K
- Jan 2014Post IPO$200K
#12
Seed · Stockholm, Stockholm County · founded 2007 · 29 employees$2.9Mraised▾
Oil & gas exploration and production company
- Dec 2009Seed$2.9M
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 Sweden
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 409 Sweden-affiliated papers.
- Chalmers University of Technology94
- KTH Royal Institute of Technology91
- Uppsala University52
- Lund University30
- Luleå University of Technology22
- Battery (electricity)1→30
- Supercapacitor3→17
- Renewable energy1→13
- Capacitance2→12
- Anode1→10
- Renewable energy1→44
- Battery (electricity)2→43
- Automotive engineering1→17
- Electrode1→17
- Flexibility (engineering)1→13
- Battery (electricity)20
- Nanotechnology9
- Electrolyte7
- Flexibility (engineering)7
- Supercapacitor7
Where energy storage is researched across Sweden
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.