Giselle Cheung CEO

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Grand Challenge
Electricity
Technology
Storage
Location
Berkeley, CA
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Company Info

PowerNaP Energy is making batteries cheap. We engineer battery materials that increase the energy density of sodium-ion batteries, raising them to parity with lithium-ion at roughly half the cost.
Learn MoreBiography
Giselle Cheung joins Breakthrough Energy’s Innovator Fellows program from PowerNap Energy in Emeryville, California. She serves as CEO, overseeing key business development, legal, HR, finance, and operations functions. In this role, she works to accelerate the electrification of our grid and transportation, eliminating key barriers to widespread adoption of EVs and energy storage systems, like the high cost of lithium-ion batteries.
PowerNaP’s novel phosphorus-based anode unlocks high energy density from abundant sodium-ion batteries, enabling parity with lithium-ion at half the cost.
Giselle got her start in equity research at Morgan Stanley and has a decade of experience in sales, marketing, and business development across deeptech companies, including Planet Labs’ expansion across Asia and Australia. Prior to co-founding PowerNaP, she also worked as a creative producer at Kyra Sedgwick’s Big Swing Productions.
A lucky resident of California, Giselle enjoys cycling, hiking, and backpacking across its natural wonders, and can also be found baking (mostly cakes) on many a birthday. She holds a Bachelor of Arts in economics from Harvard College.
Q&A
01 What is your favorite word and why?
I used to tell everyone that my name meant “a promise,” but that was before I discovered it actually meant “a pledge,” as in, someone who is sacrificed. Regardless, I love that “promise” is inherently forward-looking, and can span something as intimate as a promise between two people to something as grand as the promise of a society.
02 What is the most impactful book that you have read?
N.K. Jemisin’s Broken Earth trilogy has stayed with me for a long time. The sheer scope of its worldbuilding gives me incredible optimism for humankind and our collective ability to imagine and create new worlds. It may sound like a romantic notion, but I think such optimism is deeply practical today.
03 What did you want to be when you grew up?
An architect. Building cool things with cool people is still what gets me most excited.