US natural gas overtakes coal (2016)
For the first time on record, natural gas generated more US electricity than coal in 2016, roughly 34% to 30%. The fracking boom pushed gas prices low, and new gas plants were cheaper and faster to build than coal units.
Coal plant retirements accelerated, and gas became the dominant US power source.
Coal's share has roughly halved since, showing how quickly a cheaper technology overtakes an entrenched incumbent.
The same economics, cheaper and faster-to-build generation displacing a dominant baseload source, now drive solar's rise against nuclear worldwide.
