Impact-oriented funds need to expand to multi-billion dollar target sizes if institutional investment is to be scaled to the level required to tackle the world’s social and environmental challenges. That is not a wish. That is the opening position of Jenn Pryce, President and CEO of Calvert Impact, one of the most credible voices in global impact finance. She said it plainly, and the industry should be paying attention.
The context is important. Calvert Impact has 30 years of experience tapping US capital markets to channel money into high-impact projects globally, with work spanning off-grid solar in Sub-Saharan Africa, microfinance, affordable housing, clean energy, and small business lending in underserved communities. This is not a firm theorizing about impact. It is a firm that has been doing the work long enough to understand exactly where the system breaks down.
And here is where it breaks down: size.
Existing impact-oriented products, where larger funds are typically $100 million to $500 million in size, carry a tightly focused investing remit and smaller individual investment sizes. That structure is a ceiling. Pension funds, sovereign wealth funds, insurance companies, and large endowments operate with minimum deployment thresholds that most impact funds simply cannot accommodate. The result is that the largest pools of capital on the planet sit outside the impact ecosystem entirely, not because of values misalignment, but because of product architecture.
Pryce is building a direct response to this. The new platform Calvert is developing represents an effort to put into practice a principle underpinning the firm’s 2026 to 2028 strategy: that capital markets will not solve social and environmental challenges on their own without direct intervention at scale. The approach is designed with a global footprint, more geographic diversification, and a specific focus on meeting the need to scale access to growth debt for companies. Ticket sizes for the platform would likely be in the $10 to $15 million range.
That is a meaningful shift in philosophy. Calvert is not simply building a bigger fund. It is arguing that the architecture of impact finance itself needs to change, moving from bespoke deal-making to the kind of standardized, aggregated products that institutional capital can actually process.
The firm describes capital markets like a river running through a valley: capital flows to pools of least resistance downstream, toward large established companies, big asset managers, and familiar financial products. That natural behavior fuels wealth concentration and reinforces practices that endanger the planet. The goal is not to reject the river, but to redirect it deliberately.
The political dimension of this argument deserves equal weight. Calvert Impact had been set to take on a large-scale impact opportunity when Climate United, a coalition it led, was awarded $7 billion to support clean energy projects through the $27 billion Greenhouse Gas Reduction Fund set up under the Biden administration in 2024. However, most of that funding has since been frozen under the Trump presidency, sparking legal action by Calvert Impact and others. The outcome remains uncertain.
That episode is instructive beyond the legal battle. It demonstrates precisely why the strategy of scaling impact through government-backed programmes alone is structurally fragile. Policy cycles end. Administrations change. Public funding is frozen, redirected, or reversed. The only durable answer is a private capital market large enough and sophisticated enough to carry the load regardless of political conditions. Pryce is making that argument from experience, not theory.
For African practitioners and policymakers, this conversation is not abstract. The continent carries the world’s largest concentration of unmet development finance needs across climate adaptation, health infrastructure, food systems, and digital access. Calvert already channels capital to organizations strengthening communities and addressing climate change across more than 100 countries, including emerging markets through its Community Investment Note portfolio. But the volume of capital flowing to African solutions through mainstream impact vehicles remains a fraction of what is needed.
At the smaller end of the scale, Calvert is also working on how to add preferred equity for impact investors in nonprofit community lenders, which could act as a foundation for senior capital to enter on top. Those intermediary community lenders, Pryce notes, are vital to getting capital into communities but have been struggling to grow and strengthen their own balance sheets. That architecture has direct implications for African development finance institutions and community lenders who face the same structural constraints.
The argument Pryce is making is ultimately about sequencing. You cannot attract institutional capital into impact without building products that institutional capital can deploy into. You cannot build those products without proving track records that justify scale. And you cannot prove those track records without someone willing to take early risk on new structures. Calvert describes this as market leadership: taking early risks, often with public or philanthropic support, to prove what is possible and generate the track record that can pave the way for future investment.
That is a framework worth studying. For impact organizations across Africa, the takeaway is pointed: the global conversation on impact capital is shifting from intention to infrastructure. The question is not whether investors care about impact. It is whether the instruments exist to absorb institutional capital at the speed and volume the moment demands.
They do not yet. Building them is the work.
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