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Azola BIO

A cryogenic liquefaction solution to temporarily store excess biomethane production from AD plants.

October 2020
Gallery Azola BIO 1
Gallery Azola BIO 1


Azola BIO aims to help biomethane producers better capitalize on their investment by offering them the possibility to store biomethane flared during periods of low demand/grid congestion under liquid form, and delay/deport its injection into the network.

Azola BIO aims to tackle the following problems: -Loss of income impacting biomethane injection projects due to seasonal/recurrent low gas demand periods -Lost biomethane injected into gas distribution networks due to flared production as a response to congestion occurrences. -Lack of profitability for certain remote methanization projects that cannot be connected to a nearby network mesh. Azola developed a modular, no rotary machinery and low CAPEX solution for biomethane producers that comes with an integrated polishing, liquefaction-cryogenic storage, vaporization-reinjection, and plant control solution. The process uses an open cycle of liquid nitrogen for liquefaction, and where nitrogen is further valorised to regenerate the polishing unit's adsorption columns. The reinjection module uses a pressure build up PBU system, to vaporize and reinject the stored liquid biomethane into the grid. The whole process is automated for start-up and shutdown and could be remotely controlled and operated.

  • /
Label Date October 2, 2020
From France
Maturity stage Prototype testing in the real world
Looking For Network, New clients, Visibility, Credibility,

The environmental benefits

  • Avoid the release into the atmosphere of 172 tonnes of CO2
  • Nitrogen is valorised to regenerate the polishing unit's adsorption columns

The Financial benefits

  • Save around 12% of annual production capacity
  • Losses avoided by Azola: around 260,000 Nm3/year, approximately 260 k€/year
  • A less than 4 years payback-period

Activity Region

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  • Headquarters
  • Activity

Company Profile


An intermittent storage solution aimed at suppressing flaring in biomethane production sites during low demand periods.

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Headquarters 92270 Bois-Colombes, France

Networking Partner

International Cleantech Network

The International Cleantech Network (ICN) is a global network of 13 cleantech clusters on the international forefront of providing innovative and sustainable solutions to meet the growing demand for green technologies.

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Solutions Associated 82


ADEME - The French Agency for Ecological Transition- is a public agency under the joint authority of the Ministry for an Ecological Transition and the Ministry for Higher Education, Research and Innovation.

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Solutions Associated 52
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The information set out above, is solely for the purposes of information and the Solar Impulse Foundation does not provide any guarantee as to its authenticity, completeness or accuracy. This information does not constitute investment advice or a recommendation to buy into, transact or to enter into any agreement with any of the parties or persons mentioned above. Potential investors or interested parties are solely responsible for their investment or business decisions and for performing any due diligence required by the circumstances. The innovator AZOLA SAS has asserted ownership of the intellectual property rights for images, videos, and content showcased above, affirming full and unrestricted usage rights, and has provided explicit permission for the Solar Impulse Foundation to publish such information designated as "public" in the application form.