(1) Stable growth of installed capacity In 2020, the Group’s consolidated installed capacity of wind power increased by 1,056.2 MW, and its accumulative consolidated installed capacity was 5,471.95 MW; its attributable installed capacity of wind power increased by 1,026.28 MW, and its accumulated attributable installed capacity was 4,965.90 MW. The Group’s commercial operation project capacity during the year increased by 694.1 MW, and its accumulated commercial operation project capacity was 4,400.25 MW. As at 31 December 2020, the total designed capacity of the wind power projects under construction of the Group was 632 MW.
(2) The utilization hours of wind farms continued to remain a relatively high level In 2020, the average utilization hours of the Group’s consolidated wind farms were 2,420 hours, representing a decrease of 52 hours as compared with 2019, mainly due to the slight decrease in average wind speed of the regions where the Group’s consolidated wind farms are located as compared with 2019, as well as the increase in the curtailment rate as a result of peak regulation and power rationing in different periods due to COVID-19 outbreak. The Group’s consolidated wind farms realized a power generation of 9,881 million kWh, representing an increase of 11.86% as compared with 2019. The average availability rate of wind power generation units was 98.31%.
(3) Steady progress in wind resources reserves In 2020, the Group’s approved capacity increased by 200 MW and the total approved unstarted project capacity amounted to 1,178 MW. During the Reporting Period, the Group’s wind power projects with a total of 615.8 MW were included in national approved plans. The accumulative capacity of the Group’s wind power projects falling within the national approved plans has reached 7,309.1 MW and its wind power projects are located in 16 provinces across China. During the Reporting Period, the Group’s agreed wind power capacity increased by 3,100 MW across 23 regions including Hebei, Henan, Shandong, Shanxi, Liaoning, Yunnan, Anhui, Gansu, Jiangxi, Jiangsu, Shaanxi, Sichuan, Tibet, Hubei, Hunan, Guangxi, Qinghai, Heilongjiang, Zhejiang, Chongqing, Xinjiang, Inner Mongolia and Jilin.
(4) Vigorous promotion of technological innovations The Company adheres to the integration of integrity and innovation and vigorously promoted technological innovations. In 2020, the Company obtained 7 invention patents, 28 utility patents and 35 software copyrights. The “Key Technologies and Application Demonstration of Large-scale Coupled Hydrogen Production from Renewable Energy Sources” (大規?？稍偕茉瘩詈现茪潢P鍵技術及應用示範) project developed by the Company together with entities including Hebei University of Science & Technology received special fund support with the approval of Hebei Provincial Science and Technology Department, setting a new record of the Company in special fund support received for undertaking provincial key research and development plan projects. The “Wind Power Cluster Smart Regulation and Efficient Consumption Technology based on Big Data and Cloud Platform and the Application Thereof” (基於大數據雲平臺的風電集群智慧調控與高效消納技術及應 用) project received the Second Prize of Science and Technology Progress in Hebei Province in 2020, which is of great significance to the Company’s future scientific and technological innovation.