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
Holger Mertens, Global Green Bond Strategy portfolio manager at Amova Asset Management
News & Views

Green bonds: aligning mission and returns

For faith-based investors and other mission-driven institutions, green bonds represent a practical expression of environmental stewardship argues Holger Mertens, Global Green Bond Strategy portfolio manager at Amova Asset Management

By Holger Mertens
Content Tags: Endowments  Charity  Fixed Income 

For churches, charities, foundations and other long-term institutional investors, investment decisions often involve balancing multiple objectives. Capital must be preserved, income generated, and portfolios managed responsibly while remaining aligned with an organisation's values and mission. Green bonds have emerged as an increasingly popular tool to help achieve these goals.


Charities, Endowments & Foundations Investment Forum | 10 September 2026 | London


At first glance, the appeal is obvious. Green bonds allow investors to allocate capital towards projects with clear environmental benefits, such as renewable energy, sustainable buildings, clean transportation and sustainable water management, while maintaining the familiar characteristics of fixed income investing. Their use-of-proceeds framework also offers a level of transparency that many investors find attractive, with proceeds earmarked for specific environmental projects.

For faith-based investors in particular, green bonds can represent a practical expression of environmental stewardship. Many churches view care for the environment as part of their broader responsibility to future generations and local communities. Increasingly, values-aligned investing and green bonds are becoming part of that conversation.

The Catholic Church has framed this responsibility in broader terms:

"We are faced not with two separate crises, one environmental and the other social, but rather with one complex crisis which is both social and environmental. Strategies for a solution demand an integrated approach to combating poverty, restoring dignity to the excluded, and at the same time protecting nature."

– 2015 Encyclical Letter Laudato Si’ of The Holy Father Francis On Care for Our Common Home

Green bonds can help churches in two distinct ways: as an investment, by allocating capital to projects with environmental benefits, and as a financing tool for sustainability initiatives. Their combination of bond-like characteristics, transparency and environmental purpose has made them an increasingly popular option for investors seeking to align capital with mission. Yet the investment case for green bonds extends beyond values alone.

Finding opportunities in the transition

One area where active managers seek to add value is identifying issuers whose sustainability profile is improving. For example, we focus on utility companies with a lower renewable generation share but ambitious and credible plans to increase it over time. As renewable energy becomes a larger share of their generation mix, we believe the resulting improvements in operating efficiency and profitability can, over time, support stronger credit quality and create opportunities for investors. Renewable generation is often lower cost than conventional generation on a new-build basis, creating potential benefits for companies successfully funding and executing this transition.

We see similar opportunities in real estate companies focused on sustainable buildings. Improved energy efficiency can reduce operating costs, enhance property values and strengthen the long-term quality of underlying assets. Sustainable buildings are also increasingly important to banks, tenants and regulators, creating additional tailwinds for the sector.

Banks are another area of interest. Green bond proceeds issued by financial institutions are often directed towards financing sustainable buildings and renewable energy projects. As these projects mature and perform, their improving economics can support credit fundamentals for both borrowers and lenders.

Importantly, these opportunities are linked to some of the largest investment themes shaping the global economy today. The build-out of clean energy systems, the need for more resilient infrastructure and rising electricity demand from AI and digitalisation all require substantial amounts of long-term capital.

Green bonds provide one mechanism for directing that capital towards essential infrastructure. Importantly, these opportunities are linked to some of the largest investment themes shaping the global economy today. The build-out of clean energy systems, the need for more resilient infrastructure and rising electricity demand from AI and digitalisation all require substantial amounts of long-term capital.

The greenium: an opportunity, not necessarily a cost

One of the most common concerns about green bonds has historically been the so-called "greenium" - the belief that investors must accept lower returns in exchange for sustainable outcomes. The reality is more nuanced. Internal research conducted by Amova Asset Management using approximately 2.1 million observations across the global bond market suggests the assumption that investors must sacrifice yield has become increasingly difficult to support. In many markets, any yield difference between green bonds and conventional bonds is negligible, while in some areas investors have actually been rewarded for holding green bonds.

Supply and demand dynamics vary across sectors and markets, meaning the greenium is not static. In some cases, heavy issuance can create opportunities where green bonds trade at valuations comparable to, or even more attractive than, conventional bonds. Active managers can potentially exploit these differences by rotating between sectors as valuations change. Rather than viewing sustainability as a drag on returns, investors should consider that pricing inefficiencies can themselves become a source of potential alpha.

Looking beyond the label

Successful green bond investing requires more than simply buying securities with a green label attached. Integrating ESG analysis adds another perspective to traditional credit research and can uncover risks that may otherwise be overlooked. Examples include inadequate reporting on how proceeds are being used, insufficient transparency around environmental outcomes, or sustainability targets that apply only to part of an issuer's business.

Avoiding greenwashing is an important part of the investment process. By combining conventional credit analysis with sustainability expertise, investors can develop a more holistic understanding of risk and opportunity. Rigorous analysis of both the issuer and the underlying projects financed by the bond can help ensure capital is being allocated as intended.

More than values alignment

For churches and other mission-driven institutions, green bonds offer an attractive combination of potential financial returns, transparency and alignment with long-term objectives. But their appeal is increasingly extending to a broader range of institutional investors.

Green bonds are no longer solely a sustainability story. They are becoming a way to access themes such as energy security, infrastructure modernisation, building efficiency and the global transition to lower-carbon energy systems. For active managers, these structural changes can create additional sources of value beyond traditional fixed income investing.

In a world shaped by geopolitical uncertainty, rising energy demand and the need for large-scale infrastructure investment, sustainable fixed income has evolved from a niche allocation into a mainstream asset class. For investors seeking resilience, diversification and transparency alongside long-term return potential, green bonds are increasingly worthy of consideration.



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Content Tags: Endowments  Charity  Fixed Income 

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