CO2 / PPM /Annual Averages / Data Source: noaa.gov 1980 338.91ppm 1981 340.11ppm 1982 340.86ppm 1983 342.53ppm 1984 344.07ppm 1985 345.54ppm 1986 346.97ppm 1987 348.68ppm 1988 351.16ppm 1989 352.78ppm 1990 354.05ppm 1991 355.39ppm 1992 356.1ppm 1993 356.83ppm 1994 358.33ppm 1995 360.18ppm 1996 361.93ppm 1997 363.04ppm 1998 365.7ppm 1999 367.8ppm 2000 368.97ppm 2001 370.57ppm 2002 372.59ppm 2003 375.14ppm 2004 376.96ppm 2005 378.97ppm 2006 381.13ppm 2007 382.9ppm 2008 385.01ppm 2009 386.5ppm 2010 388.76ppm 2011 390.63ppm 2012 392.65ppm 2013 395.39ppm 2014 397.34ppm 2015 399.65ppm 2016 403.09ppm 2017 405.22ppm 2018 407.62ppm 2019 410.07ppm 2020 412.44ppm 2021 414.72ppm 2022 418.56ppm 2023 421.08ppm 2024 424.61ppm 2025 427.35ppm
CO2 / PPM /Annual Averages / Data Source: noaa.gov 1980 338.91ppm 1981 340.11ppm 1982 340.86ppm 1983 342.53ppm 1984 344.07ppm 1985 345.54ppm 1986 346.97ppm 1987 348.68ppm 1988 351.16ppm 1989 352.78ppm 1990 354.05ppm 1991 355.39ppm 1992 356.1ppm 1993 356.83ppm 1994 358.33ppm 1995 360.18ppm 1996 361.93ppm 1997 363.04ppm 1998 365.7ppm 1999 367.8ppm 2000 368.97ppm 2001 370.57ppm 2002 372.59ppm 2003 375.14ppm 2004 376.96ppm 2005 378.97ppm 2006 381.13ppm 2007 382.9ppm 2008 385.01ppm 2009 386.5ppm 2010 388.76ppm 2011 390.63ppm 2012 392.65ppm 2013 395.39ppm 2014 397.34ppm 2015 399.65ppm 2016 403.09ppm 2017 405.22ppm 2018 407.62ppm 2019 410.07ppm 2020 412.44ppm 2021 414.72ppm 2022 418.56ppm 2023 421.08ppm 2024 424.61ppm 2025 427.35ppm
News & Views

Hong Kong eyes top spot as Asia’s sustainable investment hub

Its latest green bond issuance comes months after a transition finance taxonomy was launched

The history of Asia’s economic growth is characterised by the rise of capital market hubs. Tokyo, Singapore and Hong Kong led the charge, followed by China’s Shanghai and Shenzhen. For foreign investors looking to tap into Asian growth, these hubs were often the first ports of call.

In more recent years, amid a sustainable investment boom, the hubs are competing for the coveted top spot again. Hong Kong, in particular, has mounted a serious bid.


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The pearl of the orient has not only issued some $32bn in sovereign green bonds since 2019 but also boosted efforts to facilitate capital inflow into Asia’s energy transition.

Destination HK

Earlier this month, Hong Kong issued €750m eight-year, euro-denominated sovereign green bonds. Asia’s first of its kind in 2026. Alongside green debt, the Hong Kong Monetary Authority (HKMA) also issued infrastructure bonds in USD, HKD and RMB.Since 2019, Hong Kong has issued some $32bn in sovereign green bonds across a range of formats.

Investors from over 30 markets lodged orders far exceeding the ask. A subscription ratio of 8.6 for the combined offering stood as a testament of investor confidence. “Government green bonds support green and low-carbon transformation projects, as well as consolidate Hong Kong’s development as a green and sustainable finance hub”, commented HKMA financial secretary Paul Chen.

That consolidation has been years in the making. “Hong Kong’s sustainable finance market has grown significantly in the last few years, not just in terms of the sovereign green bond issuance, but also in the government’s efforts to strengthen sustainability disclosure practices and facilitate capital flows”, says Rose Choy, APAC research director at the Anthropocene Fixed Income Institute (AFII).

Finance hub

A new AFII research note that Choy authored sees Hong Kong emerging as a ‘gateway to Asia’s next growth phase’ – one characterised by decarbonisation.

Choy says Hong Kong’s emergence as a sustainable finance hub in that context has three drivers. One is familiarity. International issuers and investors have historically been drawn to it. Secondly, deep and mature equity markets play in its favour. Clean technology ETFs by European and American asset managers, for example, have found a home in Hong Kong.

Chinese clean tech

Perhaps the most significant driver of Hong Kong’s bid to attract sustainable investment flows has been the China factor. China’s clean tech behemoths are common clientele for Hong Kong’s capital markets. Chinese EV and solar power firms have a tendency to structure green loans through Hong Kong’s financial services providers.

“Much of the market has been driven by large bond, loan and equity raisings from Chinese and Hong Kong issuers in the last few years”, Choy notes.

“Hong Kong is a venue for China’s clean tech names to raise international capital. Most recently, CATL listed its H shares in HK in 2025 (US$5.3 bn), alongside other battery suppliers and “new energy” firms pursuing IPOs on the Hong Kong stock exchange”, she explains.

Transition finance

The timing of the latest issuance also holds clues about what might come next. It comes just months after the government launched a transition finance taxonomy.

“Hong Kong’s taxonomy is viewed as a robust and credible framework. Although HK has not announced any plans to issue transition bonds, it would be a natural candidate to issue them, and likely to draw strong interest from global investors”, says Choy.

The taxonomy plays into the increasing clout of transition finance in the west. It also marks the significant milestone in Hong Kong’s rise as a sustainable investment hub in Asia. A rise marked by multiple sovereign green debt offerings, deepening equity markets with notable investor appeal and a securities pool reflective of the world’s fastest deployer of clean energy.


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