The Future of Sustainable Investing: Generational Shifts, Greenwashing Challenges, and Global Momentum
Generational Wealth Transfer Is Driving a Shift Toward Sustainable Investing.
Sizewell C nuclear power station
As the next generation of investors steps into financial leadership roles, sustainable investing is no longer a niche preference, it’s a defining priority. With a historic $30 trillion wealth transfer underway, younger investors are demanding strategies that align purpose with performance. This generational shift is already reshaping investment landscapes, driving innovation, and exposing the need for greater accountability in environmental, social, and governance (ESG) practices. Leading voices across the industry, from private asset managers to institutional investors, are grappling with the opportunities and complexities of embedding sustainability into core investment decisions.
Aligning Purpose with Performance: How Families Are Reshaping ESG Portfolios
Generational shifts are driving a clear change in sustainable investing priorities. Three in five younger family members expect more support from managers in developing creative solutions to address environmental and sustainability challenges, and 80% of the families with average assets of $1.1bn believe impact investing can prepare generations for greater responsibility, Says Emilie Shaw, Sustainable Solutions Lead at Cazenove Capital. As of December 31, 2024, Cazenove Capital managed over £11 billion in sustainable, impact, or ethically screened solutions for ultra-high-net-worth individuals and charities, a 375% increase over six years, underscoring a rising demand for investments that not only seek financial returns but also contribute positively to society and the environment.
Shaw says this also reflects a growing desire among younger generations to align their wealth with their values. With $30trn of wealth due to transfer to younger generations, these preferences will increasingly shape investment strategies. “We’re working with families”, says Shaw, “to ensure their portfolios reflect a shared vision across generations, combining purpose, performance, and long-term impact.”
This demand for purposeful investment is not just reshaping wealth management firms, it’s redefining the entire concept of value creation in finance. However, Dr. James Corah of CCLA challenges conventional sustainable investing approaches, advocating for deeper, more strategic engagement.
Beyond Divestment: Why Engagement Is Key to Real ESG Impact
Dr James Corah, Head of Sustainability at CCLA (now Jupiter) argues that sustainable investing should be viewed not just as a style, but as a movement focused on achieving both financial returns and real-world impact. While many investors now want their money to “do good,” simply removing high-emission companies from a portfolio, he says, doesn’t create real change. Instead, Corah advocates for a more meaningful approach: engaging with companies to influence and support their transition toward better environmental and social practices. This includes working with policymakers, applying pressure through shareholder votes, and setting clear goals for progress.
Corah leads sustainability at CCLA, one of the UK’s largest fund managers for charities, religious organisations, and the public sector, managing around £15 billion in assets under management (AUM). CCLA is widely recognized as the largest charity fund manager in the UK, both by the size of assets it manages and the number of charity clients it serves. He explains that sustained, well-planned engagement leads to measurable improvements in areas like carbon emissions and labour rights. Though it’s a slower and more challenging process, it ultimately contributes to a more resilient and mainstream investment portfolio. Effective engagement, he notes, requires persistence, accountability, and a clear framework for tracking outcomes—because real change takes time, but he says, “the results are worth it.”
While engagement offers a pathway to impact, others in the investment space point to the friction between theory and practice. Yogi Dewan, CEO of Hassium Asset Management, outlines the real-world challenges of executing sustainable strategies within client portfolios.
The Greenwashing Dilemma: Barriers to Effective Sustainable Investing
Yogi Dewan, CEO, Hassium Asset Management, a private investment office who invests for UHNW individuals explains some of the current difficulties of sustainable investing. “Sustainable investing is something all our clients believe in, but it is very hard to do. Many investment products that have focused on sustainable investing have been labelled as ‘greenwashing’ as they have not been able to demonstrate impact. On the buyside many pension funds and foundations have written sustainable investing into investment policy statements, but this comes at increased cost and poor relative performance impacting on fiduciary responsibilities.”
“Some client examples,” explains Dewan, “include investing in low carbon footprint companies but the best sector in this regard ends up being the technology sector and then many sustainable funds end up being overly exposed to technology. The next example is that investors say they want to avoid China because of human rights but China is the second biggest economy in the world making it impossible to avoid. For instance, many listed US/European companies have revenue exposure and manufacturing facilities in China. Then if you do not invest in the oil majors, you miss the biggest investors in alternative energy sources. If you invest in electric cars, then manufacturing and battery disposal has a poor carbon footprint making petrol cars often more sustainable.”
Dewan concludes, “Over time a clearer understanding and definition of sustainability is required and an acceptance of its long-term impact on fiduciary responsibilities.” A fiduciary responsibility is the legal and ethical duty that investment managers (or anyone handling someone else’s money) must act in their clients’ best financial interests which can make it harder for managers to apply sustainable practices confidently or consistently especially if the client mandate is to make financial returns.
Despite concerns, sustainable finance is gaining significant traction. A MainStreet Partners report highlights a surge in Green, Social, and Sustainability (GSS) bond issuance, signalling a broadening commitment to responsible investing, albeit one that must meet evolving standards.
How New EU Regulations Are Redefining ESG Fund Standards
On the topic of greenwashing and difficulty of investing, MainStreet Partners, who are a London-based investment firm established in 2008, specializing in sustainable and impact investing, published a new report. The company offers two primary services: ESG Portfolio Analytics and ESG Advisory. Their report found that around 23% of so-called Article 8 funds—which are investment funds that promote environmental or social goals—are still at risk of greenwashing (making misleading claims about how sustainable they really are).
The report looked at over 9,500 investment strategies and highlights that many funds still don’t fully meet the rules or naming standards that are meant to protect investors from being misled. For example, breaches of Carbon Transitional Benchmark (CTB) rules—which are designed to make sure investments align with efforts to cut carbon emissions—have increased sharply, with nearly half of the funds examined failing to follow these guidelines.
A major factor is new regulations from ESMA (the European Securities and Markets Authority) that govern how investment funds can label themselves as sustainable. These changes are forcing funds to be clearer and more accurate in their marketing and documentation. ESMA’s influence extends across all EU member states, affecting banks, asset managers, investment firms, stock exchanges, and other financial market participants. It enforces transparency and disclosure standards.
The report suggests that in the future, ESG (Environmental, Social, and Governance) funds will be required to show much more specific and measurable proof of their impact—helping investors make more informed and trustworthy decisions. Neill Blanks, Managing Director at MainStreet explains, “As markets continue to adapt to new frameworks, we expect to see a broader range of ESG and Sustainable investment products. These products will have clear and specific key performance indicators linked to the fund’s ESG and Sustainable approach, allowing investors to better understand the intentions of the strategy, and most importantly help reduce greenwashing. This should ensure investors have more confidence in the integrity of Sustainable investment.”
The Rise of GSS Bonds: Funding the Future of Environmental and Social Progress
Pietro Sette, Research Director, also at MainStreet Partners adds, “Sustainable investing gained serious momentum in 2024, with Green, Social, and Sustainability (GSS) bond issuance surging to nearly $1 trillion—the highest in three years.” GSS bonds are financial instruments used by governments and companies to raise funds for projects with environmental and social benefits. Green bonds finance eco-friendly initiatives like renewable energy and clean transport, social bonds support projects addressing social needs such as affordable housing and healthcare, and sustainability bonds combine both goals. These bonds follow established guidelines to ensure transparency and attract investors focused on responsible, impact-driven investing.
“Social Bonds saw the biggest leap,” says Sette, “rising to $251 billion, yet new regulatory pressures loom: over 10% of GSS bonds risk exclusion under the EU’s Paris Aligned Benchmark.” This reflects issuers that, despite financing sustainable projects, are not sufficiently aligned with the EU’s goal of limiting global warming to 1.5°C under the Paris Agreement. For wealth managers, 2025 will be a pivotal year to reassess ESG portfolios, aligning with evolving definitions of sustainability and ensuring long-term compliance and impact.
For asset managers like J. Stern & Co., this momentum is translating into tangible opportunities. Partner Katerina Kosmopoulou points to industrials as a sector delivering both impact and returns, driven by public infrastructure investment and the global push for net-zero emissions.
Why Industrials Are Emerging as Leaders in Sustainable Investment Returns
Katerina Kosmopoulou, Partner at J. Stern & Co. added her view of the sustainability investment marketplace. “We continue to see strong demand for sustainable investment solutions, as clients seek to combine positive impact with strong financial returns. One of the sectors that has been delivering consistently on that front over the last few years has been Industrials, fuelled by the transition to net zero, the reshoring of critical industrials, the need to power the AI revolution, and the desire to future proof old infrastructure. The recent announcement by Rachel Reeves of a 10-year GBP 725bn investment plan short on the heels of German Chancellor Friedrich Merz’s EUR 500bn infrastructure fund commitment underscores the sense of urgency with which this long overdue investment in hard assets is pursed by governments across the world, making it clear we are only in the early innings of a multi-year golden age for global Industrials.”
Critical industrials refer to key sectors vital for national infrastructure, security, and economic stability. This includes defense and aerospace, energy infrastructure, transportation equipment, heavy machinery, semiconductors, chemicals, and advanced manufacturing technologies. These industries produce essential goods and services that support supply chains, technological innovation, and emergency readiness, making them crucial for a country’s resilience and long-term economic health.
Public Infrastructure Investment Is Fueling a New Era of ESG Opportunity
On this, the UK Chancellor Rachel Reeves has unveiled a 10-year infrastructure strategy, committing £725 billion in public investment, as Kosmopoulou notes above, including £14.2 billion for the Sizewell C nuclear power station, a project that has faced ongoing protests from environmental groups, to support the UK’s energy transition, underlining the difficulties that sustainable investing can face. In Germany, Chancellor-in-waiting Friedrich Merz has proposed a €500 billion infrastructure and defense fund, aimed at modernizing the country’s infrastructure and defense capabilities over the next twelve years. To secure support from the Green Party, Merz agreed to allocate €100 billion of this fund to the Climate and Transformation Fund (KTF), dedicated to climate policy initiatives. This underlines the point Kosmopoulou has made about a golden age for investing in industrials.
Looking Ahead: Building a More Transparent and Accountable ESG Ecosystem
Sustainable investing stands at a crossroads, fuelled by generational conviction, regulatory scrutiny, and global urgency. While the path is complex, marked by greenwashing risks and conflicting definitions of fiduciary responsibility, the long-term direction is clear: investors want to see both financial returns and real-world impact. With governments making historic commitments and fund managers adapting to stricter disclosure frameworks, the foundations of a more transparent, accountable, and effective sustainable finance ecosystem are taking shape. As 2025 unfolds, wealth managers and investors alike will need to reassess strategies, embrace new standards, and ensure their portfolios are truly aligned with the values of a rapidly evolving world.
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