Editing Biogas (section)

====China====
As of at least 2023, China is both the world's largest producer and largest consumer of household biogas.<ref name=":532">{{Cite book |last=Santos |first=Gonçalo |title=Chinese Village Life Today: Building Families in an Age of Transition |date=2021 |publisher=[[University of Washington Press]] |isbn=978-0-295-74738-5 |location=Seattle |pages=}}</ref>{{Rp|page=172}}

The Chinese have experimented with the applications of biogas since 1958. Around 1970, China had installed 6,000,000 digesters in an effort to make [[agriculture]] more efficient. During the last few years, technology has met high growth rates. This seems to be the earliest developments in generating biogas from agricultural waste.<ref>[http://ecotippingpoints.org/our-stories/indepth/china-biogas.html Biogas in China. Retrieved 27 October 2016]</ref>

The rural biogas construction in China has shown an increased development trend. The exponential growth of energy supply caused by rapid economic development and severe [[haze]] condition in China have led biogas to become the better eco-friendly energy for the rural areas. In [[Qing County|Qing county]], [[Hebei]] Province, the technology of using crop [[straw]] as a main material to generate biogas is currently developing.<ref>{{Cite book|last=Hu|first=Die|title=Proceedings of the 2015 International Conference on Mechatronics, Electronic, Industrial and Control Engineering |chapter=Hebei Province Qing County Straw Partnerships Biogas Application and Promotion Research |date=2015|location=Paris, France|publisher=Atlantis Press|doi=10.2991/meic-15.2015.260|isbn=9789462520622|doi-access=free}}</ref>

China had 26.5 million biogas plants, with an output of 10.5 billion cubic meter biogas until 2007. The annual biogas output has increased to 248 billion cubic meter in 2010.<ref>{{Cite journal|last1=Deng|first1=Yanfei|last2=Xu|first2=Jiuping|last3=Liu|first3=Ying|last4=Mancl|first4=Karen|date=2014|title=Biogas as a sustainable energy source in China: Regional development strategy application and decision making|journal=Renewable and Sustainable Energy Reviews|volume=35|pages=294–303|doi=10.1016/j.rser.2014.04.031|bibcode=2014RSERv..35..294D |issn=1364-0321}}</ref> The Chinese government had supported and funded rural biogas projects.<ref>{{Cite journal|last1=Chen|first1=Yu|last2=Yang|first2=Gaihe|last3=Sweeney|first3=Sandra|last4=Feng|first4=Yongzhong|date=2010|title=Household biogas use in rural China: A study of opportunities and constraints|journal=Renewable and Sustainable Energy Reviews|volume=14|issue=1|pages=545–549|doi=10.1016/j.rser.2009.07.019|bibcode=2010RSERv..14..545C |s2cid=154461345 |issn=1364-0321}}</ref> As of 2023, more than 30 million rural Chinese households use biogas digesters.<ref name=":532" />{{Rp|page=172}}

During the winter, the biogas production in northern regions of China is lower. This is caused by the lack of heat control technology for digesters thus the co-digestion of different feedstock failed to complete in the cold environment.<ref>{{Cite journal|last=He|first=Pin Jing|date=2010|title=Anaerobic digestion: An intriguing long history in China|journal=Waste Management|volume=30|issue=4|pages=549–550|doi=10.1016/j.wasman.2010.01.002|pmid=20089392|bibcode=2010WaMan..30..549H |issn=0956-053X}}</ref>