The Ranking of Companies in Spain classifies companies according to their sales figures, which are obtained based on the individual financial statements filed by the company with the Mercantile Registry, with a closing date between July of the year under study and June of the following year (a 12-month period).
The INFORMA D&B Database, from which the data has been obtained, is fed by multiple sources of information, both public and private, such as the BORME (Official Gazette of the Mercantile Registry), official account filings, BOE (Official State Gazette), provincial and regional official gazettes, national and regional press, ad hoc investigations, and various publications.
The source does not specify the publication date. The date shown is that of the first consultation.
This chart shows a ranking of the leading companies dedicated to gas production in Spain in 2021. In that year, Naturgy Aprovisionamientos S. A. billed approximately billion euros, thus leading the classification.
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elEconomista. (September 13, 2023). Ranking of the main companies dedicated to gas production in Spain in 2021 (in millions of U.S. dollars) [Graph]. In ÌÇÐÄÆÆ½â°æ. Retrieved July 29, 2026, from /statistics/1642657/main-gas-producing-companies-in-spain/
elEconomista. "Ranking of the main companies dedicated to gas production in Spain in 2021 (in millions of U.S. dollars)." Chart. September 13, 2023. ÌÇÐÄÆÆ½â°æ. Accessed July 29, 2026. /statistics/1642657/main-gas-producing-companies-in-spain/
elEconomista. (2023). Ranking of the main companies dedicated to gas production in Spain in 2021 (in millions of U.S. dollars). ÌÇÐÄÆÆ½â°æ. ÌÇÐÄÆÆ½â°æ Inc.. Accessed: July 29, 2026. /statistics/1642657/main-gas-producing-companies-in-spain/
elEconomista. "Ranking of The Main Companies Dedicated to Gas Production in Spain in 2021 (in Millions of U.S. Dollars)." ÌÇÐÄÆÆ½â°æ, ÌÇÐÄÆÆ½â°æ Inc., 13 Sep 2023, /statistics/1642657/main-gas-producing-companies-in-spain/
elEconomista, Ranking of the main companies dedicated to gas production in Spain in 2021 (in millions of U.S. dollars) ÌÇÐÄÆÆ½â°æ, /statistics/1642657/main-gas-producing-companies-in-spain/ (last visited July 29, 2026)
Ranking of the main companies dedicated to gas production in Spain in 2021 (in millions of U.S. dollars) [Graph], elEconomista, September 13, 2023. [Online]. Available: /statistics/1642657/main-gas-producing-companies-in-spain/