Is it possible to utilize biogas as supplementary gasses in the natural gas grid?

Essentially Biogas and natural gas are the same type of gas with the composition of methane and carbon dioxide. Biogas is gaseous energy carriers obtained from plant-based or animal-based biomass while natural gas is mixture of hydro-carbon and forming from the fossil. So why does the question above arise?

Fig 1. Natural gas pipes (shutterstock)

The reason is coming from currently condition leaving fuel reserves depleted and climate change seriously impacted, causes the exploration of alternative fuel is needed to lessen the dependence on and consumption of fossil fuel and to secure the supply of fuel.

Fossil fuels that we currently use have many disadvantages as the global population increases, including high emissions and pollution, and most importantly, have a finite supply which the amount we use now simply isn’t sustainable while the global consumption is on the rise. In case of fossil gas, our known natural gas deposits could run out in just over 50 years left. In addition to emission, Global carbon emissions from fossil fuels accounts for 90% of all emissions from human activity. Moreover, burning of fossil fuels releases carbon dioxide and other greenhouse gases into the atmosphere, which impact to the air we breath linked to an increase in respiratory diseases and if the CO2 dissolve into the sea causes acidification which affect the lifecycle of marine organism. Renewable energy can be a great alternative to this, since its environmentally friendly and has infinite amount.

So can biogas fuel as renewable energy be supplementary gasses in natural gas grid? In terms of chemical proses, biomethane-rich biogas is identical with natural gas and fed into natural gas grid. Supplementary gasses are gas mixtures which are substantially different to the basic gas in terms of composition and combustion characteristics, can be added to the natural gas in a limited quantity. There are 2 terms of biogas connection to the natural gas grid, they are biogas conditioning and feed-in installation. Biogas conditioning consists of combustion characteristic, gas pressure, and other adaptation of the gas being fed in. Essential function of the feed-in installation are below

  • Measurement the gas composition
  • Conditioning of the biomethane (adaptation of the combustion characteristics of the biomethane to those of the natural gas in the gas grid including preussure level)
  • Creation of a structural connection between the biogas upgrading installation and the gas grid

In 2020, Ailesh Power propose a highly quality biogas with methane-rich and carbondioxide-poor named Gastra. This product is developed to be connected with existing gas grid, and also be recognized by PGN as the 2nd winner of PGN Startup Energy Competition, then will be incubated by PGN for further product development.

If you have any questions or concerns about the further explanation of this project, please do not hesitate to contact us by e-mail :

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