Best Sustainability Tech Companies in Stockholm County, Sweden

Wave energy converter solutions provider. It has developed a point absorber with a heaving buoy on the surface which absorbs energy from the combined surge and heavy motion of the waves.

Funding rounds

• Jul 2025Series B—
• Feb 2025Grant (prize money)$2.6M
• Feb 2025Series B$15.7M
• Oct 2024Series B$35M

Founders & team

Patrik MollerCo-Founder & CEO

Investors

Midroc, Almi Invest, EIT InnoEnergy, European Innovation Council, SEB Venture Capital, Europa

Tech stack

CloudflareCloudflare Bot ManagementElementorGoogle AnalyticsHello ElementorHsts

Provider of heat pumps solution for energy efficiency. It offers air-source heat pumps for residential heating. It delivers innovative and affordable clean energy-tech solutions to accelerate the electrification of residential heating.

Funding rounds

• Aug 2025Series C$174.6M
• Jun 2024Conventional Debt$217.3M
• Jan 2024Series B$158.8M

Founders & team

Martin LewerthCEO

Investors

BNP Paribas, Altor Equity Partners, Collab Fund, Creades, Kinnevik, Lingotto

Tech stack

Amazon SesAmazon Web ServicesAnimate.CssApple Icloud MailBootstrapFont Awesome

Manufacturer of solar cells. It offers a proprietary material that improves the performance of the cell. It also uses technology which uses light-sensitive dye to collect energy like photosynthesis.

Funding rounds

• Dec 2025Grant (prize money)$13.8M
• Apr 2025Series B$15.1M
• Mar 2023Series B—
• May 2021Conventional Debt$20M

Founders & team

Giovanni FiliFounder & CEO

Investors

SoftBank, European Innovation Council, Swedbank, SEK, Ilija Batljan Invest, Vinnova

Tech stack

BabelCloudflareCloudflare Bot ManagementCookie ScriptCore-JsGoogle Analytics

Manufacturer of carbon-storing supplementary cementitious material for the construction industry. The company’s technology accelerates mineralisation to turn captured carbon dioxide into a stable mineral powder. This material reduces embodied carbon and permanently locks carbon dioxide into the built environment. The product is deployed in construction projects.

Funding rounds

• Dec 2025Grant (prize money)$4.7M
• Oct 2024Series A$25M
• Oct 2022Seed$7.9M

Founders & team

Marta SjögrenCo-FounderPol KnopsCo-founder / AdvisorJane WalerudCo-Founder

Investors

Walerud Ventures, Grantham Foundation, Pale Blue Dot, 2050do, Capnamic Ventures, Holcim

Tech stack

Animate.CssApple Icloud MailCookieyesFont AwesomeGodaddyGoogle Analytics

Developer of textile recycling technology that transforms blended textiles into fibers. The technology uses a waterless process that consumes less energy. It avoids depolymerization, maintaining fiber quality. The technology is scalable and modular, designed for large-scale commercialization.

Funding rounds

• Mar 2026Seed$11.6M

Founders & team

Jade BouledjouidjaFounder & CEO

Investors

Extantia, Course Corrected, Norrsken Launcher

Tech stack

CloudflareCookieyesGoogle AnalyticsGoogle Font ApiGoogle Hosted LibrariesGoogle Workspace

Developer of battery management systems and energy storage hardware solutions. These products facilitate energy storage for residential, commercial, industrial, and telecommunications applications. The hardware integrates with software to manage power availability, optimize energy consumption, and support grid stability. The systems enable users to store energy for reserve power, reduce costs through peak shaving, and participate in energy markets. The technology supports the integration of renewable energy sources by providing scalable storage capacity for various infrastructure requirements.

Founders & team

Stefan JanssonFounderLeif OttossonCEO

Investors

Vargas Holding, Alecta, Northvolt, Beijer Ventures, Formica, Absolute Unlisted

Tech stack

Animate.CssApple Icloud MailAxiosBootstrapCloudflareCloudflare Bot Management

Manufacturer of thin, light, and flexible solar panels for various roofs. These solar panels are designed for tile, metal, and membrane roofs. The products can be installed on existing roofs or during roof replacement. The company also manufactures machinery used in the solar panel production.

Developer of water treatment technologies for removing contaminants and extracting metals. The company’s patented technologies remove PFAS and heavy metals from water streams. These technologies facilitate the recovery and recycling of valuable metals from waste. The technologies address both short- and long-chain PFAS substances.

Provider of energy solutions for energy grid and their utility. It provides users with a company that focus on an energy organization that aims to help people generate and save energy. It also facilitate transactions, and establishing rules to govern the network in order to build trust and maintain quality.

Funding rounds

• Jul 2025Seed$3.5M

Founders & team

Mats LindelowCo-Founder & CEO

Investors

Verbundx, Arkwright X

Provider of banking tools integrating behavioral science and climate impact data. The company offers solutions for sustainable banking, climate literacy, and financial wellbeing. It delivers tools to boost customer engagement and promote sustainable financial choices. The company focuses on environmental and financial wellbeing through its products.

Funding rounds

• May 2024Series B$36.8M
• Jan 2022Series B$19M
• Sep 2021Series B$17M

Founders & team

Mathias WikstromCo-Founder & CEO

Investors

S&P Global, UBS, CommerzVentures, Motive Partners, PostFinance, Tenity

Tech stack

Amazon S3Amazon Web ServicesApple Icloud MailCloudflareCloudflare Bot ManagementCore-Js

Provider of an application that connects and optimizes home energy consumption. The application enables users to monitor electricity usage in real-time and control connected devices. It also allows users to sell surplus energy back to the grid. The application aims to help households reduce energy costs and promote sustainable energy practices.

Funding rounds

• Jul 2024Series A$8.7M
• Oct 2023Seed—
• Jun 2022Seed$2.1M
• Jul 2021Seed$2.2M

Founders & team

Fredrik HagblomCo-Founder & Head Of OperationsTanmoy BariCo-Founder & CEO

Investors

Luminar Ventures, Byfounders, Green Group, SVB, Europa, Korys

Tech stack

Amazon SesAmazon Web ServicesBootstrapCdnjsCloudflareCookieyes

Provider of textile-to-textile recycling solution. It is focused on decarbonizing and dewasting the industry through textile-to-textile recycling.

Funding rounds

• Mar 2024Series A$100M

Founders & team

Susanna CampbellCo-FounderDennis NobeliusCEO

Investors

Giant Ventures, IMAS Foundation, Volvo Cars, Norrsken VC, TPG, Vargas Holding

Tech stack

CdnjsCloudflareGoogle Font ApiGoogle Hosted LibrariesGsapHsts