Op-ed on climate finance for COP21 – On the road to the USD 100bn for the climate

To address the growing impacts of heatwaves on economic activities and populations, the adaptation of the building sector is becoming a new imperative. While the question of “how” to adapt has been the subject of numerous studies, the question of “how much” has so far received little attention. To move forward on this issue, we present in this report: an overview of current knowledge regarding the costs of adapting the building sector to heatwaves and the methodology we used to estimate the additional costs of adapting to heatwaves, based on available information and discussions with experts.

This autumn’s busy negotiation agendas, offer a window of opportunity to move the reform of the international climate finance architecture (IFA) up one level. This acceleration is urgent if we want to keep pace with the dramatic change in scale needed to finance the climate transition.  In 2023, developed countries announced that they had – for the first time since 2009 – achieved their USD 100bn/year climate finance target to support climate action in developing countries. Just two years later, this target is already obsolete, with needs for emerging and developing economies (excluding China) estimated at around USD 2.4 trillion per year by 2030. 

Directing more wood towards long-life products such as panels and insulation materials can help us maximise carbon sinks without increasing forest harvests. That’s because these products store carbon for a longer periods of time in form of long-lasting construction and renovation materials. But for this to happen in practice, more market opportunities and production capacity are needed. How can public policies help?