Research on Green Innovation Efficiency of ListedChinese Energy Companies Based on Triple Bottom Line

Table 1

Index system of green innovation efficiency measurement of listed energy companies in China.

Index system	Index	Definition	Data resources
Indicators of input	Manpower input	R&D personnel	Wind database
	Finance input	R&D expenditure (million)	Wind database
	Material input	The fixed asset balance at the end of the year (a hundred million)	Wind database
Indicators of output	Economic efficiency output	Annual operating revenue (a hundred million)	Wind database
	Social efficiency output	Patent quality (%)	Wind database
		Annual public welfare donation (a hundred)	Wind database
	Environmental efficiency output	A positive environmental governance program (1 or 0.1)	Wind database
Environment variables	Level of economic development	Per capita GDP	Statistical yearbook
	Openness	The proportion of total import and export volume to GDP	Statistical yearbook
	Government support	The ratio of government subsidies to total assets	Wind database