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Expand chart
Data: Nature; Chart: Danielle Alberti/Axios

Analysis in the journal Nature finds electric vehicles' high weight relative to gas-powered models creates safety risks that can be addressed through design and policy changes.

The big picture: EVs are heavy due to battery weights and heavier equipment to provide "necessary structural support." That's a problem because heavier vehicles mean more deaths in accidents.

Threat level: This erodes the benefits of climate-friendly transport.

  • The authors — while warning this is a back-of-the-envelope tally — say the cost of extra lives lost by adding 1,500 pounds to a truck "rivals the climate benefits" of avoided emissions.
  • Heavier vehicles also create pollution from wear on tires and require more materials and energy to build and propel.

What's next: They propose setting vehicle registration charges based on weight to encourage the use of lighter vehicles.

  • Another idea is focusing more on cutting battery weight, not just today's emphasis on range extension. One specific suggestion: altering EV subsidies to make them based on storage per unit of weight to incentivize lighter batteries.
  • Other recommendations are around ways to lighten vehicle frames; technology and street-design changes to reduce accidents; and policies that encourage walking, biking and public transit.

The bottom line: EVs are "essential for decarbonizing transport" and "a focus on driving lighter, safer, cleaner and less can ensure a better future for everyone."

Go deeper

Your electric car could become a virtual power plant

Illustration: Megan Robinson/Axios

That electric car parked in your driveway may soon be more than a fun, emissions-free ride. When lashed together in the cloud with other EVs in your neighborhood, it could help utilities manage electricity demand in your community.

Why it matters: Massive growth in electric vehicle adoption which is widely expected — means that more car owners will be plugging in at home, putting pressure on America's electric grid but creating power-sharing opportunities at the same time.

  • Emerging smart-charging technologies aim to build in more flexibility so grid upgrades aren't needed and EV owners will have all the juice they need.

What's happening: EV owners can earn rebates and cash rewards from smart-charging programs by letting utilities control when their car is charged based on overall electricity demand.

  • In Texas, for example, about 1,000 EV owners participate in a smart-charging project with the Electric Reliability Council of Texas (ERCOT).
  • Together, those cars serve as a cloud-based "virtual power plant" that ERCOT can use to suck or store energy during demand peaks and valleys.
  • In Wisconsin, Madison Gas and Electric shifts charging times for 200 EVs to off-peak hours so they can soak up renewable energy generated overnight by wind farms.
  • Both utilities license the smart-charging technology from a London-based company called ev.energy, which has offices in Palo Alto.

The big picture: EV owners do more than 80% of their charging at home, according to a BloombergNEF analysis of ev.energy data from more than 1 million at-home charging sessions in the U.S., U.K. and Europe.

  • Most of them plug in after work, start charging right away, and stay plugged in overnight, often setting the departure time for their morning commute.

Yes, but: The typical charging session requires just a little top-off — 2.5 hours of charging — which means most EVs are drawing energy in the early evening when residential demand is at its peak and electricity rates are highest.

Smart-charging technology can delay charging until demand has gone down, and greener, cheaper energy is more readily available.

  • That lets utilities balance electricity demand while also maximizing the use of renewable energy and putting more money in EV owners' pockets.
  • An EV owner in California could save an estimated $600 per year charging at off-peak times, BNEF found.

How it works: EV owners plug in their car, set a departure time using ev.energy's app, and let the utility figure out the ideal charging time based on a 24-hour forecast of energy demand.

  • If necessary, the software will pause charging at the utility's request, then resume later.
  • Car owners' flexibility earns them rebates or cash rewards of $5 or $10 a month.

The utility will never drain the car's battery, says Joseph Vellone, head of North America for ev.energy. "Your departure time is the holy grail."

  • "The electricity system is incredibly complex. EV buyers can’t be bothered to immerse themselves in this complexity. We ask them one question: What time do you need your car charged by?"

Editor's note: This story has been corrected to show that Madison Gas and Electric shifts charging times for 200 EVs to off-peak hours for maximum efficiency, not 2,000 EVs. A partner company, ev.energy, reached out to say there was a numerical mistake in the report it shared with Axios.

U.S. sounds alarm on Ukraine

Conscripts line up at a Russian railway station yesterday before departing for Army service. Photo: Sergei Malgavko/TASS via Getty Images

The Biden administration is "deeply concerned" by new intelligence — detailed for Axios and other outlets — showing Russia stepping up preparations to invade Ukraine as soon as early 2022.

Why it matters: Most of this was known from public sources and satellite imagery, but the administration is sending a stronger signal by releasing specific details from the intelligence community.

Felix Salmon, author of Capital
2 hours ago - Economy & Business

Philanthropy in the age of crypto

Illustration: Annelise Capossela/Axios

The best charities are increasingly effective. That's the clear message sent by Open Philanthropy, the think tank that doubles as the grant-making vehicle for Facebook co-founder Dustin Moskovitz and his wife Cari Tuna.

Why it matters: With tech and crypto wealth becoming a fast-growing part of the philanthropic pie, there's more of an emphasis than ever on effectiveness — what the newly-divorced Melinda French Gates, in her recent Giving Pledge update, characterizes as giving as "impactfully as possible."

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