Leading 25 countries/territories

The leading 25 countries/territories ranked by article Share (Share) in affordable and clean energy related-output between 2015 and 2021. Also listed are each country’s/territory’s energy article count (Count), proportion of energy Share relative to total Share (Energy %) and percentage of internationally collaborative articles (International articles %) in the field.

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Rank	Country/territory	Share 2015–21	Count 2015–21	Energy (%)	International articles (%)
1	China	7,333.37	9,288	9.0%	46.3%
2	United States of America (USA)	4,806.24	7,123	3.4%	58.1%
3	Germany	896.68	1,748	2.8%	78.1%
4	South Korea	780.46	1,138	7.8%	53.8%
5	Japan	672.16	1,108	3.0%	60.5%
6	United Kingdom (UK)	624.83	1,354	2.4%	81.8%
7	Australia	470.25	1,007	5.5%	84.7%
8	France	388.26	845	2.4%	82.2%
9	Singapore	387.12	700	9.2%	79.1%
10	Canada	362.14	714	3.2%	78.0%
11	Switzerland	274.48	552	2.8%	77.0%
12	India	262.23	400	3.7%	50.0%
13	Spain	219.85	506	2.7%	83.4%
14	Italy	202.96	484	2.6%	86.8%
15	Netherlands	200.89	433	3.1%	78.5%
16	Sweden	174.02	401	3.9%	85.3%
17	Taiwan	143.55	332	4.8%	76.8%
18	Saudi Arabia	122.16	324	13.0%	84.6%
19	Israel	106.40	206	2.5%	71.8%
20	Belgium	90.53	229	3.0%	88.2%
21	Denmark	89.74	198	3.2%	81.3%
22	Russia	79.64	249	2.5%	87.6%
23	Austria	58.67	188	2.3%	94.7%
24	Czech Republic	52.71	139	3.8%	86.3%
25	Poland	49.51	150	2.9%	86.7%