Local newspaper article on environmental sustainability issues and clean energy

Trouble in renewable energy spotted in China's idled wind farms

This article addresses the shortcomings of renewable energy, quoting the wind farms in China as an example. It states that China has a large concentration of wind turbines in the country, "accounting for about one in every three turbines currently installed, according to the Global Wind Energy Council. In turn, Xinjiang Goldwind Science & Technology". However, even with its large capacity, the efficiency of the wind farms in China is outweighed by wind farms in USA which has only half the capacity of wind turbines.
China's wind capacity increased by 89 times from 2006 to 2015, while USA wind capacity only increased by 7 times. However, China's wind farms only produced 0.5 Terrawats/hour more electricy than USA.
The inefficiency of China's wind farms is due to various regions, which include the low quality wind turbines with low turbine efficiency used in their wind farms due to a shift on low cost energy production. Wind quality is also another factor which impacts the energy output of the wind farms in China, the breezes are weaker in China compared to USA and wind turbines work more efficiently on short periods of strong wind as compared to long periods of constant weak wind. There are also many other issues such as grid connection problems and reluctance of connecting wind energy to the grid due to preference for other energy sources such as coal in China, as coal is more predictable and reliable and does not have the problem of being intermittent. 
Despite the huge increase in renewable wind energy in China, majority of its energy still comes from coal-fired power generation, which is much less environmentally friendly, and China has to, at some point, make sacrifices in one area in order to stablize the energy output from different sources.
In my opinion, they should focus on having more high quality wind turbines instead of using more coal as coal not only one of the most non environmentally friendly sources of energy but is also a rapidly depleting source and is not a reliable source in the long run. The impact on the environment in China would also be increased negatively by coal. China is now in a lose-lose situation as they are not using renewable energy efficiently, and also relying on a non-renewable carbon heavy source. I feel that they should sacrifice some of the profits made from coal and move on to cleaner sources of energy if they are striving for a sustainable environment in China in the future.