Ten years after nearly 200 nations adopted the Paris Agreement, the global effort to cap warming at or near 1.5°C has produced a patchwork of advances and setbacks. The deal enshrined a long-term goal and a framework for nationally determined contributions, global stocktakes and regular reporting — but the scale and pace of delivery have varied widely between countries and sectors.
Progress and partial wins
There have been clear achievements since 2015. Deployment of renewable energy has accelerated in many regions, energy efficiency measures have been strengthened in some economies, and a growing number of companies and cities have set net-zero targets. Several countries have enacted policies to curb emissions in power generation and transport, and technological improvements have driven down costs for solar and wind power, helping expand clean energy capacity.
Where commitments have fallen short
Despite those gains, experts and official reviews say the collective effort remains insufficient to limit warming to 1.5°C. Many national pledges, when aggregated, still point to a trajectory that overshoots the Paris goal. Continued investment in fossil fuel infrastructure in parts of the world, uneven progress on phasing out coal, and delays in implementing deeper emissions cuts have undermined the agreement’s ambitions. Developing countries in particular report persistent shortfalls in promised climate finance, which complicates their ability to invest in clean transitions and adaptation.
Diplomacy, finance and the road ahead
The Paris architecture — including regular global stocktakes and updated nationally determined contributions — has kept climate change high on international agendas, but the diplomatic record has been mixed. Negotiations at successive Conferences of the Parties have yielded procedural steps and some new funding mechanisms, yet major gaps remain on both mitigation and support for vulnerable nations. As countries prepare further updates to their climate plans, analysts say the next few years will be decisive: translating promises into rapid emissions cuts, scaling clean energy and delivering reliable finance for mitigation, adaptation and loss and damage will determine whether the world can still align with the 1.5°C limit.
Looking forward, governments, investors and civil society face a narrow window to intensify action. The anniversary is prompting renewed scrutiny of who has delivered on their Paris commitments and who has lagged, underscoring that the agreement’s long-term success depends on accelerated policies and concrete implementation at national and subnational levels.