Mar 28, 2019

Carbon emissions from the U.S. power sector rose in 2018

Photo: Spencer Platt/Getty Images

New data from a Carnegie Mellon University project show that U.S. power sector carbon emissions ticked upward last year, because overall generation rose enough to outpace declines in emissions per unit of output.

Why it matters: The newly updated Power Sector Carbon Index shows the challenge of continuing — let alone accelerating — what has been a major decline in emissions from electricity over the last decade.

The big picture: Total electricity generation rose in 2018 after what has largely been a multiyear plateau.

  • The sector's CO2 emissions were 1,791 million metric tonnes, up from 1,780 million metric tonnes the prior year, representing the first uptick in a half-decade.
  • Emissions intensity — the amount of CO2 per unit of power produced — is 29% lower than 2005 as the power mix has moved away from coal and has seen growth in gas and renewables.

Explore the interactive data

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Tech can't remember what to do in a down market

Illustration: Rebecca Zisser/Axios

Wall Street's two-day-old coronavirus crash is a wakeup alarm for Silicon Valley.

The big picture: Tech has been booming for so long the industry barely remembers what a down market feels like — and most companies are ill-prepared for one.

Brace yourself for a coronavirus outbreak

Illustration: Aïda Amer/Axios

Public-health officials’ warnings about the coronavirus are sounding increasingly urgent, with one top CDC official asking the public yesterday "to prepare for the expectation that this might be bad."

Reality check: Other administration officials, including President Trump himself, were more subdued in their assessments. But underneath those tonal differences, the reality of the coronavirus is the same: It spreads quickly, and has already spread to many countries, making it likely to start spreading here, too.

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Exclusive: Pro-Trump group plans post-Super Tuesday blitz on Democrats

Democratic presidential hopefuls take the debate stage in South Carolina. Photo: Logan Cyrus/AFP via Getty Images

Pro-Trump super PAC America First Action is preparing to unleash a series of targeted, swing-state attacks on the Democrat most likely to face President Trump after Super Tuesday, people familiar with the group's plans tell me in an exclusive preview of its strategy.

The state of play: The group has been tracking favorable/unfavorable ratings in Florida, Georgia, Michigan, North Carolina, Ohio and Pennsylvania for 2020 candidates Joe Biden, Bernie Sanders, Elizabeth Warren, Pete Buttigieg and Michael Bloomberg — under the theory that if Trump wins each of these six states he would win re-election.