The gradual submersion of Jakarta is not a climate story - it is a governance failure of the adaptation response.
The science was clear by the 1990s. 40% of the city sits below sea level. The worst districts sink twenty-five centimetres a year, not because of the sea or climate, but because of groundwater extraction: a political failure dressed as a natural disaster. The decision to leave came in 2019. Construction of Nusantara, Indonesia's newly planned capital city, began in 2022. Then in 2025, President Prabowo reclassified it from national capital to political capital. State funding fell from $2 billion in 2024 to $300 million in 2026. The city built to house 1.2 million people by 2029 currently holds ten thousand.
Jakarta is sinking because of misalignment: political tenure is four years, while sea-level risk is measured in decades. Every actor behaved rationally within their window. Yet the aggregate of rational decisions is a rapidly sinking city and a trapped population.
The standard response to any critique of adaptation finance is: give us better data, longer horizons, and more sophisticated instruments. However, climate adaptation is predicated on a series of unknowns, including tipping points that we cannot predict. In short, we will not be able to mathematically model ourselves out of climatic shocks. What we need is a completely different class of financing and policy decision architecture, one that will allow us to harness the scale of one policy problem to fund the solution to another.
Originally published by African Business.