Comisión de Regulación de Energía y Gas - CREG - What is it?
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What is it?

What is natural gas?Is a mixture of gases of high calorific that formed in the bowels of the earth through the years. The main component of this mixture is methane. The other ingredients, in small amounts, are other gases such as ethane, carbon dioxide (CO2) and water vapor, mainly.

It can be measured in units of volume (cubic meters m 3 or feet cubic ft 3 ) or energy (kilowatt hour or kWh BTU heat units).