Imagine if buying a financial investment could help build a wind farm, expand a solar park, or modernise an electricity grid. That is the promise of green bonds, a rapidly growing form of investment designed to fund projects with environmental benefits. As the world searches for practical ways to tackle climate change while meeting rising energy demand, these financial tools are attracting increasing attention from governments, businesses, and investors alike. Yet an important question remains. Do green bonds genuinely make a measurable difference, or are they simply another well-intentioned financial product with limited real-world impact?

Every time someone turns on a tap, they expect it to work. Clean water should arrive reliably, wastewater should disappear safely, and rivers and beaches should remain healthy for future generations. Most people rarely think about the companies and regulators working behind the scenes because these systems are supposed to function quietly and effectively. Yet in recent years, England and Wales have experienced repeated controversies over sewage pollution, rising public frustration, and questions about the financial health of some water companies. The obvious question is how an industry with extensive regulation could produce such disappointing outcomes.