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

Sustainable Energy Research

Table 1 Estimation of installation costs of household biogas plants

Inputs (materials and labor) cost	Quantity of materials and labor size required for installation		Unit price (ETB)	Total cost of material and labor (ETB) required for installation
Inputs (materials and labor) cost	6 m³	8 m³	Unit price (ETB)	6 m³	8 m³
A. Civil construction cost
1. Cement (bags, 50 kg)	11	16	135	1485	2,60
2. Sand (barrows)	12	18	75	900	1350
3. PVC pipe (6 m length and 70 mm diameter with its elbow)	2	4	150	300	600
4. Galvanized steel (dome gas pipe), 1.5 m length and 60 mm diameter with its elbow		1	345	345	345
5. Iron bar (6 m length and 8 mm diameter with binds)	7	11	165	1155	1815
6. Transportation cost				210	240
Subtotal				4395	6510
B. Labor cost
1. Mason cost (paid by adopters)				1300	1600
2. Grave worker cost (barrows)	12	15	90	1080	1350
Subtotal				2380	2950
C. Total cost (A + B)				6775	9460
D. Subsidy
1. Cost of supply line				2420	2420
2. Mason (subsidized by NBPE)				3580	3580
Subtotal				6000	6000
E. Total installation cost (C + D)				12,775	15,460

The average installation costs vary among households due to differences in plant size and costs of materials and labor required. All figures in the table are rounded off to the nearest possible