Press Release

Energy Intelligence Announces Annual Global Top 100 Green Utilities Ranking

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Energy Intelligence announces the latest ranking of the global Top 100 Green Utilities, which provides detailed insights on the fast-changing shift to low-carbon power generation. This ranking of the world's top green power generators from both industrialized and emerging markets, published in EI New Energy, is based on companies’ renewable energy portfolios and greenhouse gas emissions. Key findings:

  • Since the first edition of the Green Utilities ranking seven years ago, renewables (not including hydro) have almost tripled to nearly 300 GW or 9% of the 100 ranked companies’ total capacity in 2017, up from just 116 GW in 2011. This occurred as total capacity covered in the ranking has increased by 18% to nearly 3,400 gigawatts. In the meantime, fossil fuels dropped to 61%, down from 65%.
  • While traditional utilities still account for most companies in the ranking, specialized independent power producers focusing on clean technologies are progressing. Spain's Acciona, originally a construction and engineering firm now operating 9 GW of renewable capacity, tops the ranking for the fourth year in a row.
  • The ranking has also been getting more diverse in terms of geographies. Companies from Europe, the US and Japan accounted for 55% of total power capacity seven years ago, but their share has fallen to 43%.
  • Taking their place in green power generation is Chinese firms, which now account for 30% of the ranking's total capacity, up from 19% initially, and own 48% of the ranking's total for wind and solar. Also, China’s largest generators are all in the first quarter of the ranking thanks to huge investments in wind and solar generation totaling well over 60 GW in the past seven years.
  • Many of the utilities in the ranking have changed their fundamental strategies in recent years. Of the 100 companies currently ranked, 18 were not in the original ranking -- or not in their current form after mergers or spin-offs took place -- and six of the remaining 82 changed their name -- notably to erase any reference to oil and gas.

“Utilities face a host of questions about their future business models in the low-carbon transition. This requires them to re-examine their fundamental strategies, which comes with both growing pains and opportunities,” said Lauren Craft, editor of EI New Energy, where the report is published. “As the latest ranking shows, a host of companies are taking the bull by the horns by shifting their portfolios substantially toward renewables. In addition, a number of new faces are coming to the table as green power generation expands globally.”

Energy Intelligence selected 100 of the largest power generators from around the world, accounting for about half of global capacity. The ranking evaluated their “greenness” according to carbon dioxide emissions per megawatt hour, volume of renewable energy capacity and proportion of renewables to total capacity. Rather than approaching the subject by country or region, the report compares individual companies around the world, from both industrialized and emerging markets. An accompanying analysis draws out key trends and conclusions.


Notes to Editors To view the full results, including the detailed methodology, click here

To discuss the EI New Energy Top 100 Green Utilities Ranking, contact:
Philippe Roos
Senior Reporter, EI New Energy +33 6 22 86 37 76 /

Lauren Craft
Editor, EI New Energy +1 202 662 0728 /

For further information on EI, please contact:
Kevin Kear
Marketing Specialist, Energy Intelligence / +44 (0)20 7518 2239

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