Sustainable Energy Research

Table 4 Weekly kerosene consumption before and after biogas plant installation

From: Cost-benefit Analysis and Financial Viability of Household Biogas Plant Investment in South Ethiopia

Variable	Plant size	Category	Minimum	Maximum	Mean ± SD	t value	p value
Kerosene (L)	6 m³	Before adoption	0.67	2.00	1.63 ± 0.68	17.202	0.000^a
	6 m³	After adoption	0.00	0.00	0.00 ± 0.00	17.202	0.000^a
	8 m³	Before adoption	1.00	2.33	1.72 ± 0.67	18.443	0.000^a
	8 m³	After adoption	0.00	0.00	0.00 ± 0.00	18.443	0.000^a

^aRepresents 1% level of significance

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