Most analyses of energy storage focus on the winners—lithium-ion dominance and the rise of Tesla. Asianometry offers a rare, forensic autopsy of a high-profile failure that reveals why even industrial giants stumble when they scale before the market is ready. This piece doesn't just recount General Electric's abandoned Durathon project; it exposes the dangerous allure of "premature scaling" in advanced manufacturing, a lesson with urgent relevance for today's green energy investments.
The High-Temperature Gamble
Asianometry begins by tracing the lineage of molten salt technology, noting that while Ford explored it in the 1960s and South African scientists pioneered the "Zebra" battery in the 1970s, the technology hit a "double dead end" in the electric vehicle space. The author argues that the fundamental physics were simply outmatched by lithium-ion competitors. "The battery's energy density by the late 2000s was about 94 to 148 watt hours per kilogram," Asianometry writes, contrasting this sharply with modern lithium-ion capabilities that offer "250 watt hours per kilogram" or more. This technical gap was insurmountable for cars, but the executive branch and major corporations often overlook such constraints when chasing policy-driven mandates.
The narrative shifts to General Electric's acquisition of the technology in 2007, hoping to solve carbon emission regulations for freight trains. The company paired a massive diesel engine with these batteries to capture braking energy, aiming for a 20% efficiency boost. However, the execution was fraught with doubt. Asianometry points out a glaring discrepancy in the company's public messaging: "I do not believe the hybrid locomotive ever developed into a viable business," the author notes, questioning CEO Jeff Immelt's claim of selling over 4,000 units. "It seems strange that the CEO of a publicly listed company would lie so blatantly," Asianometry observes, yet no press releases or visual evidence of such a fleet exists. This suggests a culture where the narrative of innovation was prioritized over the reality of deployment.
"The number one reason why startups fail is premature scaling. GE was a hundred billion dollar company; they should have known better."
The Illusion of a Unified Market
After the locomotive venture stalled, General Electric pivoted, rebranding the technology as "Durathon" for stationary energy storage. The logic was seductive: if the batteries couldn't power cars, perhaps they could power the grid. Asianometry dismantles this assumption by highlighting the extreme operational requirements of the chemistry. The system must be kept at temperatures between 270 and 350 degrees Celsius, requiring heavy insulation and constant heating. "This tends to add a lot of weight," the author explains, noting that the system was designed to be safe and durable rather than powerful. "We really believe that lithium provides power, sodium provides storage," Immelt was quoted as saying, framing the two as complementary. Asianometry, however, sees this as a rationalization for a technology that lacked a clear home.
The core of the failure, according to the author, was a catastrophic misreading of the market structure. Analysts pitched a "6 billion dollar opportunity" by 2020, but Asianometry argues this was a fantasy. The market wasn't a monolith; it was a "jumbled fried rice of several dozen markets," each with distinct needs. Telecom companies wanted backup power, utilities needed grid integration, and defense projects required peak shaving. "There is no scale here," Asianometry writes. "It's the business equivalent of house to house fighting." By building a $100 million factory to serve a fragmented landscape, General Electric ignored the fundamental economics of system integration. A counterargument worth considering is that early-stage green technologies often require heavy initial investment to drive down costs, but the author convincingly argues that General Electric built the factory before proving the train could move.
The Cost of Chasing Growth
The piece concludes by identifying the root cause not as a technical flaw, but as a corporate imperative for relentless growth. In 2009, General Electric needed to find $7.7 billion in new revenue to achieve a modest 5% growth rate. This pressure led to a strategy of "laying down the track before they proved that the train can move." Asianometry notes that while the company invested millions in scaling, they failed to realize the market was not what they imagined. "The molten salt's technical upsides over lithium weren't so prominent anymore," the author concludes, as competitors in China and South Korea drove down lithium-ion costs through massive consumer electronics and EV demand.
Critics might argue that abandoning a technology before it matures stifles innovation, and that the high-temperature stability of molten salt still holds niche value for extreme environments. However, the author's focus on the economic reality—that General Electric's "desperate grasp" for revenue growth led to a $200 million loss and nearly 100 job cuts—offers a starker, more pragmatic lesson for the industrial sector.
Bottom Line
Asianometry's most compelling insight is that General Electric's failure was not a lack of engineering prowess, but a strategic blindness to market fragmentation and the dangers of scaling before product-market fit. The strongest part of the argument is the dissection of the "fried rice" market myth, which serves as a vital warning for current policymakers and investors pouring billions into unproven energy storage solutions. The biggest vulnerability remains the assumption that all advanced manufacturing follows this linear path of failure, though the specific case of Durathon stands as a definitive cautionary tale against letting growth targets dictate technological roadmaps.