The Visionary Leading America's Zinc Battery Revolution

When you're building the future of grid-scale energy storage, you need a captain who understands both electrons and economics. Enter Joe Mastrangelo – the CEO who's turned Eos Energy Enterprises into the Tesla of zinc battery technology. But don't let his Italian last name fool you, this New Jersey native speaks fluent engineer and Wall Street.

From Jet Engines to Grid Storage: An Unconventional Path

Mastrangelo's resume reads like a Marvel superhero origin story:

• 25+ years at General Electric (including running their $15B renewable energy division)
• Expertise in everything from aircraft engines to wind turbines
• Recipient of 6 patents for power generation systems

Fun fact: He once joked that managing GE's wind business was like "herding cats during a hurricane." Now he's corralling zinc molecules instead.

Why Zinc? The Chemistry of Disruption

Under Mastrangelo's leadership, Eos bet big on zinc hybrid cathode technology when everyone else was chasing lithium. The numbers tell the story:

Metric	Eos Znyth®	Lithium-ion
Cycle Life	10,000+ cycles	4,000-6,000
Raw Material Cost	$50/kWh	$150+/kWh
Fire Risk	Non-flammable	Thermal runaway risk

The Grid's New Safety Net

Recent projects showcase Eos' growing footprint:

• 10MWh system stabilizing Texas' ERCOT grid during 2024 heat waves
• 50MWh installation replacing diesel peakers in Puerto Rico
• Partnership with Shell for modular microgrid solutions

The Road Ahead: Storage at Scale

Mastrangelo's playbook focuses on three key fronts:

1. Manufacturing Muscle - Ramping up to 8GWh annual capacity by 2026
2. Chemistry Improvements - Targeting 85% round-trip efficiency
3. Global Partnerships - Recent MOUs with Indian and Australian utilities

As he recently told Energy Storage News: "We're not just building batteries - we're creating the shock absorbers for the clean energy transition." With $480M in backlogged orders, that shock absorption system is getting real traction.

Download Who's Steering the Ship at Eos Energy Storage? [PDF]

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