low-carbon energy

Expert Voices

Renewables are pulling ahead in formerly coal-heavy states

coal-fired power plant
A coal-fired power plant outside Kingston, Tennessee. Photo: Paul Harris/Getty Images

Thanks to the declining costs of wind and solar energy, Idaho, Colorado, New Mexico and other states have made plans to retire old coal plants early — paving the way for deeper penetration of clean energy.

The big picture: At least 36 gigawatts (GW) of the country's 260 GW of existing coal generation are forecast to close by 2024, continuing the trend from last year's record 15 GW of coal retirements. These transitions are often moving ahead without political pressure and in states that lack renewable energy mandates.

The climate stakes of Uber's IPO

Illustration of exhaust from car tailpipe being stopped by a giant hand
Illustration: Sarah Grillo/Axios

Uber's big new IPO prospectus touts the company's green ambitions as it prepares for its multibillion dollar offering — and acknowledges that environmental policy is a risk factor.

Why it matters: Uber is going public amid growing scrutiny of ride-hailing's carbon footprint as research shows it can boost emissions by cannibalizing mass-transit and increasing miles driven.