Household Biogas – Hainan, China

Project Description

The project involves 15,555 households being equipped with a biodigester with an 8 m3 fixed dome tank, to replace old coal fired stoves

It involves the building of 15,555 biogas tanks where organic matter including manure and wastes are decayed anaerobically.  This biological digestion produces methane which is used for cooking and meets the thermal demands of the households, with the biogas stove having a rated power of 2.33 kW

The project results in a reduction of greenhouse gas emissions in two ways:

• The recovery and utilization of biogas from digested slurry in the biogas digester reduces methane emissions that would otherwise have been released.  It prevents these emissions by changing manure management practices
• The biogas is used as thermal energy, replacing coal currently used to meet the households’ daily energy needs for cooking and heating

The annual emission reduction for the project is estimated at over 53,000 tCO2e

Sustainability Beyond Carbon

The project helps address 3 Sustainable Development Goals (3, 12 and 13)

The project aims to:

• recover methane and substitute the consumption of fossil energy
• increase employment for the local people through the construction of methane pools and the follow-up service
• improve the living and cooking conditions and the health of the local people
• popularize practical energy technology and improve population quality

The project not only provides renewable energy, it also reduces expenditure on coal and significantly decreases production of smoke while cooking