Coal Decline and Persistence

US coal generation has fallen by more than half since 2007. Global coal generation hit a new record high in 2023. Both facts are true simultaneously, and the tension between them defines the limits of US climate policy.

Coal's decline in the US is almost entirely a market story: cheap shale gas undercut coal on marginal cost, and no climate policy was needed to trigger the switch. US coal's share of electricity generation fell from 49% in 2007 to roughly 16% in 2023. Over 300 coal-fired units have retired since 2010. But globally, coal power capacity is still growing, driven by China, India, and Southeast Asia. China alone added more coal capacity in 2023 (about 47 GW, Global Energy Monitor) than the US retired in its single biggest retirement year of the past decade (about 15 GW, in 2015).

The persistence is not irrational. In countries where gas is expensive (imported LNG at $10-15/MMBtu versus US domestic gas at $2-3), coal at $3-5/MMBtu remains the cheapest dispatchable generation. For India, with 1.4 billion people and per-capita electricity consumption one-tenth of the US level, coal provides the baseload capacity that no other source can deliver at the same price and scale today.

The math of global coal. US coal retirements avoided roughly 600 million tons of CO2 per year. China's coal fleet emits roughly 5 billion tons per year.

If the US eliminated coal entirely, would global coal emissions decline?

Only if no other country increased production. The US share of global coal emissions is about 10%. Eliminating it while Asian coal continues expanding produces a net global increase. This is why climate policy focused exclusively on domestic coal misses the larger picture.

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