Utilization of Rooftop Solar Units to Generate Electricity and Hydrogen: A Technoeconomic Analysis

Table 9

Present worth and annualized value of all costs over 20 years.

Component	Net present costs ($)					Annualized costs ($/yr)
	Capital	Replacement	O & M	Salvage	Total	Capital	Replacement	O & M	Salvage	Total
PV array	12,792	0	3,715	-10,217	6,290	282	0	82	-225	139
Electrolyzer	1,450	4,156	2,718	-3,936	4,388	32	92	60	-87	97
Hydrogen tank	2,400	0	4,531	-1,954	4,977	53	0	100	-43	110
Storage	3,200	6,054	227	0	9,481	71	134	5	0	210
Converter	600	1,720	453	-1,629	1,144	13	38	10	-36	25
System	20,442	11,930	11,644	-17,736	26,280	451	264	257	-391	581