Suez, a world leader in circular and digital solutions for water and waste, has acquired stakes in two North American start-up companies Airex Energy and Subeca.
Suez has acquired stake in two North American start-up companies Airex Energy and Subeca.
(Source: Pixabay)
Paris/France – In July 2023, Suez, Airex Energy and Groupe Rémabec announced the creation of the joint venture Carbonity to build Canada’s first biochar plant in Port-Cartier (Quebec). Produced from forestry and agriculture biomass, biochar offers several benefits: carbon sequestration, increased nutrient retention, optimized water availability and soil aeration. It was identified by the Intergovernmental Panel on Climate Change (IPCC) as one of the five most efficient negative-emission solutions.
Suez’s arrival as shareholder of Quebec-based Airex Energy illustrates the two firms’ desire to take their collaboration further, and additionally ties in with the low-carbon goals set out in Suez’s sustainable development roadmap. Capitalizing on Airex Energy’s technology, the two companies intend to develop annual production capacity of more than 350,000 tonnes of global biochar from hitherto insufficiently or unexploited agricultural and forest biomass resources. This collaboration also aligns with the 2050 net zero target qualified as indispensable at Cop 28.
Based in Dallas, Texas, Subeca is an Internet of Things (IOT) specialist that develops smart water metering solutions compatible with Amazon Sidewalk, a free-to-connect communication network for IOT that covers more than 90 % of the American population. Advanced metering infrastructure (AMI) is an essential tool to help reduce water consumption and preserve resources, cutting volumes by up to 16 % thanks to leak detection and use monitoring. Subeca’s IOT solution makes for the simple and cost-efficient deployment of this water metering. In the US, it could enable more than 40,000 water utilities and private companies currently locked out of advanced metering to gain access to remote water meter reading and monitor their consumption effectively.
Stay up to Date
Do you want the latest news, specialist articles and information on new products? Then you can register for our free newsletter:
Suez bought into a series A investment round whose participants also included Amazon’s Climate Pledge Fund, the Amazon fund that invests in climate tech firms, and Burnt Island Ventures, a leading venture capitalist in the water sector. Suez, one of the leading smart water metering solution providers with more than six million units deployed around the world, intends to capitalize on its expertise to support Subeca in scaling up its propositions and in its go to market strategy in the water sector’s vast global digital marketplace.
Amazon Sidewalk is a Low Power Wide Area Network (LPWAN) provided by Amazon in the United States. The Sidewalk infrastructure connects with the millions of Amazon consumer devices installed in American households.
These new investments are part of the drive to increase resources dedicated to innovation, with a 50 % rise in the budget dedicated to R&D and innovation between 2022 and 2027. The investments bring to 80 million euros the total amount invested since 2010 by the Suez Ventures fund dedicated to start-ups. Nearly 55 % of direct investment has gone into start-ups in France, and 45 % into start-ups specializing in digital tech.
These equity investments also reflect Suez’s open innovation approach. With its corporate venture activity, Suez develops synergies with innovative SMEs and start-ups all over the world to develop and support their growth and draw on complementary expertise in the water, waste, decarbonation and digital sectors.
“Resource preservation and carbon capture and storage can play a key role in rising to the challenges of climate change. We are pleased to support the developments of Airex Energy and Subeca. These investments reinforce our presence in North America and open up avenues for various synergies. Acquiring a stake in these firms offers evidence of SUEZ’s desire to incorporate complementary technologies into its value chain to provide its clients with ever more resilient and innovate solutions in water and waste services,” shares Sabrina Soussan, Chairman and CEO of Suez.
Date: 08.12.2025
Naturally, we always handle your personal data responsibly. Any personal data we receive from you is processed in accordance with applicable data protection legislation. For detailed information please see our privacy policy.
Consent to the use of data for promotional purposes
I hereby consent to Vogel Communications Group GmbH & Co. KG, Max-Planck-Str. 7-9, 97082 Würzburg including any affiliated companies according to §§ 15 et seq. AktG (hereafter: Vogel Communications Group) using my e-mail address to send editorial newsletters. A list of all affiliated companies can be found here
Newsletter content may include all products and services of any companies mentioned above, including for example specialist journals and books, events and fairs as well as event-related products and services, print and digital media offers and services such as additional (editorial) newsletters, raffles, lead campaigns, market research both online and offline, specialist webportals and e-learning offers. In case my personal telephone number has also been collected, it may be used for offers of aforementioned products, for services of the companies mentioned above, and market research purposes.
Additionally, my consent also includes the processing of my email address and telephone number for data matching for marketing purposes with select advertising partners such as LinkedIn, Google, and Meta. For this, Vogel Communications Group may transmit said data in hashed form to the advertising partners who then use said data to determine whether I am also a member of the mentioned advertising partner portals. Vogel Communications Group uses this feature for the purposes of re-targeting (up-selling, cross-selling, and customer loyalty), generating so-called look-alike audiences for acquisition of new customers, and as basis for exclusion for on-going advertising campaigns. Further information can be found in section “data matching for marketing purposes”.
In case I access protected data on Internet portals of Vogel Communications Group including any affiliated companies according to §§ 15 et seq. AktG, I need to provide further data in order to register for the access to such content. In return for this free access to editorial content, my data may be used in accordance with this consent for the purposes stated here. This does not apply to data matching for marketing purposes.
Right of revocation
I understand that I can revoke my consent at will. My revocation does not change the lawfulness of data processing that was conducted based on my consent leading up to my revocation. One option to declare my revocation is to use the contact form found at https://contact.vogel.de. In case I no longer wish to receive certain newsletters, I have subscribed to, I can also click on the unsubscribe link included at the end of a newsletter. Further information regarding my right of revocation and the implementation of it as well as the consequences of my revocation can be found in the data protection declaration, section editorial newsletter.