China Construction Bank Global Green Finance Index 17: Supplement "Energy Storage – The Missing Piece Of The Net-Zero Puzzle"

The seventeenth edition of the China Construction Bank Global Green Finance Index (CCB GGFI 17) was published on 23 April 2026. CCB GGFI 17 evaluates green finance offerings from 92 major financial centres around the world. The GGFI serves as a valuable reference into the development of green finance for policy and investment decision-makers.

In 2026, the China Construction Bank offered sponsorship for the index, which is now retitled China Construction Bank Global Green Finance Index.

There has been a strong rebound in confidence in the development of green finance in financial centres. Following two editions of the index where average ratings fell, in this edition of the index, the average rating was up 5.14% compared with CCB GGFI 16, with all centres improving in the ratings. The data on which the index is based predates the recent conflict in the Middle East and the future ranking of centres may be affected by the outcome of those events.

We continue to see strong performance from Western European centres, which reflects their history of developing green finance products and expertise. US centres have regained some of the reductions in ratings that they have suffered in the last two editions of the index. The general commitment of a city or jurisdiction to sustainability is a strong influence on the depth and quality of green finance in a financial centre.

Among those responding to the CCB GGFI survey, Sustainable Infrastructure Finance, Renewable Energy Investment, and Environment, Social, And Governance (ESG) Analytics are rated as the areas of green finance with most impact, while Sustainable Infrastructure Finance, Renewable Energy Investment, and Green Bonds are seen as the areas of most interest.

Policy and Regulatory Frameworks, Technological Change, Climate Change, and Tax Incentives are listed by respondents as the major drivers of green finance. These underline the importance of regulatory frameworks in green finance.

In the supplement to this edition of the CCB GGFI, we analyse developments in the field of energy storage.

Index Results

• London regained its leading position in the index, with Singapore moving into second place. Zurich fell to third position while Amsterdam overtook Geneva to take fourth position.
• Frankfurt and Vienna entered the top 10 in this edition of the index, replacing Stockholm and Brussels.
• Western European centres take nine of the top 10 places. Singapore is the only Asia/Pacific centre in this leading group.
• The margins separating centres at the top of the index are small. Among the top 10 centres the spread of ratings is just 24 points out of 1,000 in CCB GGFI 17.
• Eighteen centres rose 10 or more places in the rankings. Nine centres fell 10 or more places.