September 16, 2020
Biogas injected into the natural gas grid: works begin!
Parc de l’Alba, which business area is known as Barcelona Synchrotron Park – also includes a future residential neighbourhood and different green areas (half of the total surface of the park) with an iconic 1km-wide biologic corridor.

Between 2007 and 2011, an excavation made in one of these green plots as the result of a former clay extraction activity was used to store waste bales from Barcelona Metropolitan Area waste recovery plants. Since the landfill has been closed, the biogas produced by the decomposition of bales organic material is extracted and burned in order to prevent its emission into the atmosphere.

To take advantage of the methane present in this biogas at a significant 60% concentration, Naturgy Energy Group (a Spanish utility formerly known as Gas Natural Fenosa), designed a pioneer project in Spain: setting up both an upgrading plant to filter methane and an injection plant to introduce this biomethane into the natural gas grid. The upgrading plant will use membrane separation technologies, an upgrading system that consists of the physical separation of CO2 and CH4 molecules based on their different size.

Once obtained all the permissions from the administrations and completed the bidding stage, Naturgy has started the construction of these two plants scheduled to start operating early next year.

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