Slashdot: Hardware's Journal

Massive Lithium Ion Battery Fire/Explosion Shows Challenges of Renewable Energy Storage
Pursuing a renewable energy strategy, Arizona's largest electric company "installed massive batteries near neighborhoods with a large number of solar panels, hoping to capture some of the energy from the afternoon sun to use after dark," reports the Associated Press. Slashdot reader pgmrdlm shares their report on what happened next: But an April fire and explosion at a massive battery west of Phoenix that sent eight firefighters and a police officer to the hospital highlighted the challenges and risks that can arise as utilities prepare for the exponential growth of the technology. With an investigation ongoing and no public word on the fire's cause, the incident is being closely watched by energy storage researchers and advocates... "Absent battery storage, the whole value proposition of intermittent renewable energy makes no sense at all," said Donald Sadoway, a battery researcher at Massachusetts Institute of Technology and co-founder of battery storage company Ambri... Nearly all of the utility-scale batteries now on the grid or in development are massive versions of the same lithium ion technology that powers cellphones and laptops... Arizona Public Service (APS) has assembled a team of engineers, safety experts and first responders to work with the utility, battery-maker Fluence and others to carefully remove and inspect the 378 modules that comprise the McMicken battery system and figure out what happened.... The APS fire was the third involving a utility-scale battery. One was at an APS-owned battery in Flagstaff in 2012, and the other was in Hawaii. APS has shut down its two similar batteries while awaiting the investigation's results, but the utility is not slowing down its plans to deploy new massive batteries, said Alan Bunnell, a company spokesman. "We believe energy storage is vital to a clean energy future here in Arizona," Bunnell said.