Alternative energy supply system to a rural village in Ethiopia

Table 4 Annual biogas energy production potential from the village biomass energy resources

Biogas energy sources	Dry matter	Availability	Available potential	energy potential	Useful energy potential (GJ/year)
Biogas energy sources	(t)	(%)	(t)	(GJ/year)	Burner	Electricity
Cow dung	70	0.4	28	172	103	52
Crop residues	75	0.3	23	198	119	59
Human feces	7.5	0.8	6	46	28	14
Human urine	3.8^a	0.8	3	23	14	7
CD + CR	145		51	389	233	117
CD + HE	81		37	285	171	85
CR + HE	86		32	243	146	73
CD + CR + HE	156		60	458	275	137

ISSN: 2192-0567