A Battery as Big as the Grid

2012 could mark the arrival of utility-scale battery storage

5 min read
A Battery as Big as the Grid
Photo: AES Energy Storage

imgPowerhouse: This lithium-ion battery installation can smooth out variability in the adjacent wind farm near Elkins, W.Va.Photo: AES Energy Storage

Sometime this quarter, a shovel will sink into the dry desert soil of a Mexicali industrial park, breaking ground for the construction of an unprecedented energy-storage facility. Once completed, its batteries will be able to feed a full gigawatt into the grid for 4 to 6 hours.

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Xiaomi Builds a Humanoid Robot for Some Reason

CyberOne is a new biped from China, but why does it exist?

3 min read
A black and white humanoid robot lies face down on dirt after appearing to have just fallen

Xiaomi, a large Chinese consumer electronics manufacturer, has introduced a full size bipedal humanoid robot called CyberOne. It’s 177 centimeters in height and weighs 52 kilograms, and it comes with 21 degrees of freedom, with “a curved OLED module to display real-time interactive information.” Nifty! So, uh, its actual purpose is... what exactly?

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Climate-Friendly Ethereum Is One Merge Away

Successful tests set the stage for the cryptocurrency’s switchover in September

3 min read
A large blue lit data center. A figure wearing a white cleanroom suit walks towards a green lit room.

Here pictured is Evobits crypto farm, an Ethereum mining rig in Romania.

Akos Stiller/Bloomberg/Getty Images

The merge is coming, and crypto may never be the same.

“The merge” is shorthand for Ethereum’s rapidly approaching switch from one compute-intensive form of blockchain verification to a much less resource-heavy method. In other words, the cryptocurrency will be switching from proof-of-work to proof-of-stake. This move, which is years in the making, changes how Ethereum maintains consensus—and drastically slashes power consumption.

“Ethereum’s power-hungry days will soon be numbered,” says Terence Tsao, Ethereum protocol developer at Prysmatic Labs. “And I hope that’s true for the rest of the industry, too.”

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A Multiphysics Approach to Designing Fuel Cells for Electric Vehicles

White paper on fuel cell modeling and simulation

1 min read
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Comsol

Fuel cell electric vehicles (FCEVs) often reach higher energy density and exhibit greater efficiency than battery EVs; however, they also have high manufacturing costs, limited service life, and relatively low power density.

Modeling and simulation can improve fuel cell design and optimize EV performance. Learn more in this white paper.