41 Best Energy Nuclear Startups in Stockholm to Watch in 2025

The Definitive Seedtable Ranking of Energy Nuclear Startups in Stockholm

We track 71,000+ companies and rank them dynamically using our Seedtable Score – a score that uses quantitative and qualitative data points to signal the momentum behind a company. We then monitor the list manually leveraging our expertise as founders and investors.

There are 41 start-ups with an aggregate funding of $9.6b. The average funding per company in this subset is $233.9m.

Last update to the database: Feb 18, 2025. See changelog.

See all results for this search

Track over 71,000 companies

Discover
Fast-growing Global startups

Seedtable uses technology and people to track over 71,000 companies to help you find the right ones to partner with.

Pricing + Sign up

12

Funding Rounds

$6.9b

Money raised

Northvolt develops sustainable lithium-ion batteries in conjunction with R&D, industrialization, and recycling to support clean energy.

2

Funding Rounds

$21.1m

Money raised

LeadCold is a company developing lead-cooled small nuclear reactor technology founded in 2013 by Janne Wallenius, Jesper Ejenstam and Peter Szakalos.

Location:

Key people:

8

Funding Rounds

$73.3m

Money raised

CorPower Ocean is a wave energy converter solutions provider founded in 2012 by Patrik Möller .

Location:

Key people:

$110.0k

Money raised

Spacept is a software platform that uses computer vision to process satellite images of infrastructure to enable safer, more efficient and sustainable operations and maintenance.

11

Funding Rounds

$208.8m

Money raised

New materials that enhance the efficiency of solar cells.

5

Funding Rounds

$181.7m

Money raised

Polarium is a lithium battery technology for telecom industry founded in 2022.

3

Funding Rounds

$2.1m

Money raised

Altered is a Stockholm-based developer of water faucet aerator technologies to reduce water consumption.

4

Funding Rounds

$34.0m

Money raised

Sunroof is a producer of roof-integrated solar panels founded in 2020 by Tom Roof.

1

Funding Rounds

$480.0k

Money raised

Enerpoly develops affordable, safe, and sustainable zinc-ion batteries for energy storage solutions.

1

Funding Rounds

$550.0k

Money raised

Krafthem is a Stockholm, Sweden-based developer of energy management and energy trading systems.

2

Funding Rounds

$16.4m

Money raised

Novatron is a developer of commercial fusion reactors founded in 2019 by Erik Oden.

Location:

Key people:

1

Funding Rounds

$5.8m

Money raised

Myrspoven is an AI-powered energy optimisation platform for buildings founded in 2017.

2

Funding Rounds

$6.4m

Money raised

Visual data inspection platform to optimize electricity grid performance.

2

Funding Rounds

$228.4m

Money raised

Aira is a manufacturer of intelligent heat pumps founded in 2022.

2

Funding Rounds

$1.5m

Money raised

Sustainable bio-batteries for small and large-scale energy storage.

2

Funding Rounds

$14.2m

Money raised

Fever is an API-centric platform for virtual power plants founded in 2022.

1

Funding Rounds

$21.8m

Money raised

Echandia is a maritime battery manufacturer founded in 2018.

$930.0k

Money raised

Service for fossil-free office recycling and sorting for companies.

3

Funding Rounds

$10.7m

Money raised

App to scan, sort and recycle items at home, and get rewarded for it.

2

Funding Rounds

$1.2m

Money raised

Alight is a solar energy producer founded in 2013 by Richard Nicolin.

Location:

Key people:

1

Funding Rounds

$1.5m

Money raised

Platform enabling investment in renewable energy and cleantech projects.

3

Funding Rounds

$11.8m

Money raised

Einride is a digital freight mobility platform founded in 2016.

$7.4m

Money raised

Cloover is a renewable energy subscription service founded in 2022.

2

Funding Rounds

$28.0m

Money raised

Exeger Sweden AB is a company in the energy industry founded in 2009.

Industries:

Location:

2

Funding Rounds

$7.5m

Money raised

Software-defined power system provider for the electricity sector.

Industries:

Location:

1

Funding Rounds

$11.0m

Money raised

Producer of fossil-free iron from residues and waste.

3

Funding Rounds

$1.6m

Money raised

Lectogo is a scandinavia's Network of rentable power banks founded in 2018.

2

Funding Rounds

$1.7b

Money raised

Northvolt is a manufacturer of sustainable lithium-ion batteries founded in 2016.

Location:

1

Funding Rounds

$1.3m

Money raised

Epishine is a developers of printed solar cells founded in 2016.

1

Funding Rounds

$23.8m

Money raised

Mine Storage is a large-scale energy storage solutions provider founded in 2000 by Thomas Johansson.

Location:

Key people:

$4.6m

Money raised

Cascade Drives is an electromechanical drives for heavy-duty applications founded in 2014.

Location:

2

Funding Rounds

$1.3m

Money raised

Cellfion is a bio-based membranes developers founded in 2021.

1

Funding Rounds

$2.3m

Money raised

Cling Systems is a recycling system developers for EV battteries founded in 2020.

Location:

1

Funding Rounds

$2.2m

Money raised

Solar-powered water distribution technology.

$3.0m

Money raised

Ecohelix is a producer of biopolymer founded in 2014.

1

Funding Rounds

$1.2m

Money raised

Stockholm Water Technology is a platform offering clean and sustainable water solutions.

1

Funding Rounds

$4.0m

Money raised

Arkion is an energy infrastructure inspection platform founded in 2019.

1

Funding Rounds

$2.2m

Money raised

Heat pumps and energy saving platform for home owners.

Location:

1

Funding Rounds

$20.0m

Money raised

Sustainable energy solutions provider focusing on development and integration.

Location:

1

Funding Rounds

$100.0k

Money raised

Envar is a B2B Marketplace founded in 2020.

1

Funding Rounds

$2.7m

Money raised

Greenely is an energy management platform founded in 2014.

Sign up to access our full database

Enter your email and get access to 71,000 + technology companies you can partner with.

Join 29000+ founders, operators, and investors.