Development of Optimal Tilt Angle Models of a Photovoltaic Module for Maximum Power Production: Ethiopia

Table 4

The seasonal and yearly optimal tilt angle of 44 cities in Ethiopia using the anisotropic model, equation (19).

Cities	Winter	Spring	Summer	Autumn	Annual
Adama	38	4.33	0	22.33	16.17
Addis Ababa	38.33	4.33	0	22.67	16.33
Adigrat	43	6.33	0	28	19.33
Arbaminch	35.33	3.33	0	19.33	14.50
Asela	37.33	4	0	21.33	15.67
Asosa	39.33	4.67	0	23	16.75
Assaita	40.33	5.33	0	25.33	17.75
Awash	38.33	4.33	0	22.33	16.25
Awassa	36.33	3.67	0	20.33	15.08
Axum	43	6.33	0	28	19.33
Bahir Dar	40.67	5.33	0	25.33	17.83
Butajira	37.33	4	0	21.67	15.75
Debre Birhan	39	4.67	0	23.33	16.75
Debre Markose	39.33	5	0	24	17.08
Degehbur	37.67	4.33	0	22.33	16.08
Dek Island	41	5.33	0	25.67	18
Dessie	40.33	5	0	25	17.58
Dilla	35.67	3.33	0	19.67	14.67
Diredawa	39	4.67	0	23.33	16.75
Dubti	40.33	5.33	0	25.67	17.83
Filtu	34.67	3	0	18.33	14
Finoteselam	40	5	0	24.33	17.33
Gambela	37	4	0	21.33	15.58
Gebreguracha	39.33	4.67	0	23.33	16.83
Geladi	36.33	3.67	0	20.67	15.17
Ginir	36.33	3.67	0	20.67	15.17
Godie	36.33	3.67	0	20.67	15.17
Gonder	41.67	5.67	0	26.33	18.42
Harar	38.33	4.67	0	23.33	16.58
Hosaena	36.67	4	0	21.33	15.50
Jima	36.33	3.67	0	21	15.25
Jinka	34.67	3.33	0	18.67	14.17
Kebri Dahir	36.33	3.67	0	20.33	15.08
Logia	40.33	5.33	0	25.67	17.83
Mega	33.33	2.67	0	17.33	13.33
Mekelle	42.33	6	0	27.33	18.92
Metekle	40	5	0	24.33	17.33
Metema	42	6	0	26.33	18.58
Mizan Teferi	35.67	3.67	0	20	14.83
Nekemt	38.33	4.33	0	22.33	16.25
Semera	40.33	5.33	0	25.67	17.83
Shashemene	36.33	3.67	0	21	15.25
Welyta Sodo	36.33	3.67	0	20.33	15.08
Ziway	37.33	4	0	21.33	15.67