Forecasting of Energy Production for Photovoltaic Systems Based on ARIMA and ANN Advanced Models

Table 8

Measured and forecasted values for 10 days, September 2013, based on ARIMA and ANN models. This table is reproduced from [35] under the permission of the editor.

Year	Month	Day	ARIMA (1,0,14) (Wh/mp)		ARIMA (1,0,7) (Wh/mp)		ANN (Wh/mp)
			Measured	Forecasted	Measured	Forecasted	Measured	Forecasted
2013	9	19	—	—	—	—	—	—
2013	9	20	6,624.2	6,123.75	6,624.2	5,721.44	6,624.2	5,431
2013	9	21	5,078	6,379.47	5,078	5,973.61	5,078	5,421
2013	9	22	6,997.1	5,857.37	6,997.1	5,038.02	6,997.1	5,315
2013	9	23	5,907	6,697.06	5,907	683.91	5,907	5,210
2013	9	24	5,595.3	5,228.81	5,595.3	5,847.36	5,595.3	5,019
2013	9	25	6,976.2	6,379.57	6,976.2	5,745.71	6,976.2	4,696
2013	9	26	6,661.8	5,745.95	6,661.8	5,755.16	6,661.8	5,668
2013	9	27	5,983.8	5,882.45	5,983.8	5,756.6	5,983.8	5,706
2013	9	28	4,089.2	5,472.23	4,089.2	5,755.73	—	—