Combined Prediction of Clean Energy Consumption in China Based on the Nonlinear Programming Model

Table 5

2020–2024 comprehensive forecast results of China’s clean energy consumption demand (10,000 tons of standard coal).

Year	GM (1,1)	Arima	Combined predictive value
2020	136678.45	112282.56	122240.96
2021	152440.26	119627.61	133021.74
2022	170019.73	127078.43	144607.07
2023	189626.46	134602.60	157063.34
2024	211494.26	142211.61	170492.79