The Denominator

The 14th Five-Year Plan set an 18 percent carbon intensity reduction target for 2021–2025. China achieved 12.4 percent. Then it achieved 17.7 percent. Both numbers are real. The gap between them is a methodology revision.

In late 2025, China’s statistical authorities expanded the carbon intensity calculation to include industrial process emissions — cement, chemicals — alongside the energy-sector emissions the metric had previously measured. The historical baseline was revised upward. Past performance improved retroactively. The 12.4 percent that annual statistical communiqués had reported became 17.7 percent under the new accounting. Lauri Myllyvirta, lead analyst at the Centre for Research on Energy and Clean Air, called it “opportunistic.” CREA’s assessment was more direct: China’s decision-makers “decided to meet the target by revising past data rather than ramping up efforts.”

The cement sector’s emissions fell not because of climate policy but because of the real estate collapse. The methodology captured that decline, the statistics absorbed it, and the target was declared nearly met. The revision didn’t change any physical quantity. It changed the number on the page.

The 15th Five-Year Plan — covering 2026–2030 — then set its carbon intensity reduction target at 17 percent. Lower than the 18 percent target the previous plan failed to meet under the original methodology. Lower than the target that required a data revision to be declared met even under the new one.

The mechanism is the denominator. Carbon intensity is emissions divided by GDP. When GDP grows at 4.5–5.0 percent annually, the denominator expands. A 17 percent intensity reduction, against a growing denominator, permits the numerator — actual emissions — to rise. CREA calculates that the target allows China’s absolute CO2 emissions to increase by 3–6 percent over the next five years. Under the old methodology, the equivalent target would have required a 2 percent decrease. The methodology change didn’t just revise the past. It reversed the direction of the future requirement — from a small decrease to a significant permitted increase.

There is no absolute emissions cap. The plan sets only an intensity target — no ceiling on total CO2. And the baseline resets at each plan start: the 14th plan’s shortfall carries no institutional weight into the 15th. Whatever China emitted in 2025 becomes the new starting point from which a new, lower-ambition reduction is measured. Intensity targets do not accumulate debt. Each period clears the slate.

Then there is the language.

On April 22, 2021, Xi Jinping told the Leaders Summit on Climate that China would “strictly limit the increase in coal consumption over the 14th Five-Year Plan period and phase it down in the 15th Five-Year Plan period.”

Phase it down. A directional commitment. The trajectory must go down. The audience was the world.

The actual 15th Five-Year Plan says China will “promote the peaking of coal and oil consumption.”

“Phase down” requires a downward trajectory from day one. “Promote the peaking” is a process description. It allows coal consumption to continue growing until some unspecified moment when it peaks — at an unspecified level, on an unspecified timeline. And “promote” distances the government from the outcome: it is promoting the peaking, not delivering it. The commitment that was directional in 2021 is positional in 2026. The retreat happened in the grammar.

CREA’s reading: “This is clearly walking back the commitment to gradually reduce coal consumption.” The plan also emphasizes “strengthening the clean and efficient utilisation of fossil energy” — which CREA identifies as language for coal-to-chemicals industry development. The fossil fuel system isn’t being phased down. It’s being rebranded as “efficient.”

Now the complication that prevents this from being a simple story of backsliding.

China installed 277 gigawatts of solar capacity in 2024. Seventy-nine gigawatts of wind. Together, more renewable capacity in a single year than most countries have built in their histories. Wind and solar generation reached 18 percent of China’s total electricity — up from 9 percent in 2020. Combined capacity more than doubled in three years, from 635 GW to 1,408 GW by end of 2024. Solar alone surpassed 1,000 GW in the first half of 2025.

In the final ten months of 2024, clean energy supply growth covered all of the growth in electricity demand. In the first half of 2025, clean generation outstripped demand growth entirely, producing a 2 percent fall in fossil generation. China’s CO2 emissions have been flat or falling for 21 consecutive months.

The build is real. It is the largest clean energy deployment in human history. It is driven by economics as much as policy — solar is the cheapest source of electricity in most Chinese provinces. The deployment routinely exceeds the Five-Year Plan’s own targets because the market outruns the plan.

This is the structure that makes China’s climate position harder to read than denial and more dangerous than delay.

The clean energy build is genuine. The accountability architecture is theatrical. The build happens because the economics demand it. The targets are designed to be met regardless of what happens to absolute emissions. These two systems — the physical deployment and the accounting framework — now operate in parallel, connected by the same government, disconnected in what they require.

The danger is not that the build will stop. It probably won’t — the economics are too compelling, the industrial policy too embedded, the export market too large. The danger is that the accountability architecture provides no warning if the build proves insufficient. If grid integration costs rise, if curtailment worsens, if storage lags, if the coal fleet keeps running alongside the renewables because provincial governments protect local employment — the intensity target will not catch it. A 17 percent intensity reduction can be met while emissions grow 6 percent. The measurement was supposed to create pressure. It has been redesigned to relieve it.

Climate Action Tracker called the 15th plan “a missed opportunity.” That understates it. A missed opportunity implies the architecture was trying and fell short. This architecture is not trying. It is meeting its own standard — a standard calibrated to require nothing the economy would not deliver on its own.

Xi told the world China would phase coal down. The plan promotes peaking. The 14th plan missed its target; the methodology was revised until it hadn’t. The 15th plan set a lower bar against the revised baseline, with no absolute cap, and the denominator does the rest.

The build is real. The numbers on the page are accurate. The CO2 in the atmosphere does not consult the methodology.

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