Powering Net Zero Commitments

More about biogas

Biogas is produced when organic materials  like food waste, waste water, plant waste and animal waste are broken down by bacteria in an oxygen-free environment through a process called anaerobic digestion. Through anaerobic digestion these biogas systems recycle the organic materials biogas. The captured biogas can be utilised to produce heat and electricity for use in fuel cells, engines or microturbines. By refining biogas further (removing carbon dioxide) it can be converted into biomethane which is a renewable natural gas or RNG which can be injected into gas grids or produce electricity. It can also be used as vehicle fuel which converted into compresses natural gas.

Project photos

Project information

The biogas project procures poultry litter as well as animal and agricultural waste  from nearby farms in the district. The collected litter and waste is delivered to a substrate storage area on the site and off-loaded onto a scraper floor and are then fed into 4 continuously stirred digesters through hopper pumps. The digesters have a total working volume of 16,000 m3. Under controlled conditions biogas is produced through a bio-methanation process, which recovers the methane (biogas) from the litter and waste. The biogas that is generated in the digesters is then piped out and cooled down to remove moisture before it is fed via blowers into 2 x 1.2 MW biogas engines (2.4 MW total capacity) for the generation of power. The generated electricity (after consuming for internal operation of the plant) is supplied to the state electricity board via a dedicated 22 kV transmission line feeder to the nearby substation. The supplied electricity is sold by the project participant to the distribution licensee as per the modalities of the Energy Biomass Purchase Agreement.

The plant is designed to operate on a mix of approximately 37,000 metric tonnes per annum of poultry litter, 58,000 metric tonnes per annum of agricultural waste streams from the sugar and tapioca processing industries and 1,825 metric tonnes per annum of cow dung. This should result in generation of around 7.9 million cubic meters of biogas per annum, which is expected to generate around 15.4 GWh of gross electricity.

The project supports the region’s objectives of reducing Greenhouse Gas emissions (avoiding methane release from waste) and to reduce the reliance on electricity generated from fossil fuel-fired power plants.

CO2 emissions reduction

An estimate of the project’s annual carbon emission reductions achieved.

Baseline emissions 30,890 MT CO2-e

Project activity emissions


7,118 MT CO2-e

0 MT CO2-e

Overall emissions reduction 23,772 MT CO2-e

Sustainable Development Goals

As a Paying.Green® member, your investment not only benefits the environment, but it also supports communities through the United Nations Sustainable Development Goals.

The project creates direct and indirect employment for the local rural population. It also provides indirect employment through waste collection and transportation.

The project creates economic activity through the diversification of the region’s energy supply, which contributes to further indirect job creation.

Reducing the danger of disease in people and animals as the controlled two-stage anaerobic digestion process nearly completely eliminates pathogens, germs and parasites. Improved air quality through the reduction of bad odour.

This project results in an estimated reduction in emissions of 23,772 MT CO2-e.

Project location

The IOT Mabagas biogas plants is located at 6/75-1, Ramaiyapatti Road Govindampalayam Thathayangarpatti Village Kannurpatti Post Puduchatram, Namakkal District 637014, Tamil Nadu, India.