China's carbon emissions rose in Q1 2026 despite record renewable build: what the data shows

China's carbon emissions increased in the first quarter of 2026, driven by higher coal and gas combustion, despite the country continuing to build wind and solar capacity at record rates. The central finding from Climate Home News is that more clean power is being wasted rather than displacing fossil fuel generation, creating a disconnect between installed renewable capacity and actual emissions outcomes. This dynamic challenges a common assumption in climate modelling: that adding renewable generation automatically reduces emissions in proportion to capacity added.

The mechanism behind the gap is curtailment, the practice of switching off wind and solar generation when grid infrastructure cannot absorb the output. China's transmission grid has not expanded fast enough to move electricity from the regions where renewable generation is concentrated to the major demand centres. As a result, coal plants that can be ramped up and down more flexibly continue to run, while clean energy goes unused. The first quarter of 2026 saw this problem persist even as the overall installed base of renewables grew.

For ESG practitioners working on Scope 3 category 11 financed emissions or supply chain carbon accounting, China's emissions trajectory matters directly. A significant share of global manufactured goods, raw materials, and components originate from Chinese industrial facilities whose grid electricity remains more carbon intensive than renewable capacity statistics alone would suggest. Emissions factors derived from national or regional grid averages need to account for the gap between generation mix and actual dispatch.

The finding also has implications for companies relying on Chinese renewable energy certificates to support market based Scope 2 claims for operations or suppliers located in the country. If curtailment means that clean generation is not actually displacing fossil fuel consumption on the grid, the additionality of those certificates is open to question. This feeds broader concerns about the integrity of market based accounting in energy intensive sectors, though the Chinese grid presents a structurally specific version of the problem.

For investors and financial institutions assessing climate related risks in portfolios with significant China exposure, the Q1 2026 data is a reminder that emissions intensity trajectories for Chinese counterparties may not be declining at the pace that installed renewable capacity figures imply. ESG teams should flag to asset managers that grid level emissions factors for China deserve more careful treatment in financed emissions calculations, and that company level disclosures citing renewable energy use in China require scrutiny of actual dispatch and curtailment data.