{"id":4769,"date":"2025-05-21T17:59:11","date_gmt":"2025-05-21T15:59:11","guid":{"rendered":"https:\/\/iamcarbonzero.com\/questions\/"},"modified":"2026-07-28T09:58:36","modified_gmt":"2026-07-28T07:58:36","slug":"questions","status":"publish","type":"page","link":"https:\/\/iamcarbonzero.com\/en\/questions\/","title":{"rendered":"Questions"},"content":{"rendered":"\t\t
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No matches found.<\/p>\n<\/div>\n\n\n

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Biomethane<\/h2>\n\n
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\n What is Biomethane?<\/span>\n <\/span>\n <\/div>\n
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Biomethane is 100% renewable energy<\/strong> obtained from organic waste from agricultural and livestock sources.<\/strong> Through an anaerobic fermentation process (oxygen-free and completely sealed), it is converted into a high-quality gas<\/strong> that is injected directly into the existing natural gas grid.<\/strong><\/p>\n

Waste from the surrounding area is treated and transformed into \u201cdigestate\u201d<\/strong>, a high-quality biofertiliser<\/strong> that returns organic matter and the nutrients needed for soil regeneration, and supports compliance with European regulations. All of this makes waste management easier<\/strong> and positions it as a benchmark for Circular Economy<\/strong>, Innovation<\/strong> and Decarbonisation<\/strong> in rural areas. <\/p>\n

From a more technical perspective, Biomethane is a renewable gas composed mainly of methane (CH\u2084)<\/strong> obtained from biogas after a purification process known as upgrading. Once purified, it can be injected into the gas grid as natural gas, or stored and transported as LNG (Liquefied Natural Gas) or CNG (Compressed Natural Gas). <\/p>\n <\/div>\n <\/div>\n\n

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\n How is Biomethane different from biogas?<\/span>\n <\/span>\n <\/div>\n
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Biogas is the initial product resulting from the anaerobic fermentation of organic waste in the digester. It then undergoes a purification process to obtain Biomethane, a high-quality gas very similar to fossil natural gas. This Biomethane is injected directly into the existing national gas grid infrastructure and blends with the natural gas we use in our homes, offering a greener alternative without requiring substantial changes to infrastructure. <\/p>\n

The most important difference is the business model: in the case of Biomethane, the priority is to obtain a high-quality gas through a fully sealed process with strict control of inputs, processing and outputs for each component.<\/strong> In the case of biogas, uses and processes can vary widely.<\/p>\n <\/div>\n <\/div>\n\n

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\n How is Biomethane produced?<\/span>\n <\/span>\n <\/div>\n
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Biomethane is a benchmark for the Circular Economy and decarbonisation. Plants convert organic waste, such as manure or agricultural residues, into Biomethane, a renewable gas with characteristics similar to natural gas. This process not only prevents methane\u2014a powerful greenhouse gas\u2014from being released into the atmosphere, but also creates high-quality biofertilisers that regenerate agricultural soils. All of this takes place in a controlled, sealed environment, eliminating odour emissions and contamination risks. <\/p>\n

Steps to produce Biomethane:<\/p>\n

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  1. Collection of organic feedstock. Our plants have strict intake controls and we only use organic agricultural and livestock waste.<\/strong><\/li>\n
  2. Anaerobic digestion (biogas production): the organic matter corresponding to the optimised feedstock mix for each project is introduced into a biodigester<\/strong>, where it breaks down in an oxygen-free, fully sealed environment.<\/li>\n
  3. Biogas purification: to convert biogas into Biomethane, impurities such as CO\u2082 (via absorption, membranes or cryogenics), hydrogen sulphide (H\u2082S) and other components generated during anaerobic digestion are removed. Once purified, the gas has a methane purity above 95%, similar to natural gas, and can be blended with it in the existing Spanish gas grid. <\/li>\n <\/ol>\n <\/div>\n <\/div>\n\n
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    \n What are the main applications of Biomethane?<\/span>\n <\/span>\n <\/div>\n
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    Biomethane can be injected into the natural gas grid or used as:<\/p>\n