Spatial characteristics and dynamic differences of power industry's low carbon transition efficiency.

Second, Eastern region's technical efficiency EC is higher than the national average, while Central and Western region's EC is slightly lower than the national average, but both show an increasing trend.

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The EC of Jiangxi, Hunan, and Henan is less than 1, and displays a decreasing trend, while the EC of the remaining 27 provinces and cities either grow or are unchanged.

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The width of the curve has become slightly narrower since 2010, indicating that the regional differences exhibit a weak trend of narrowing.

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