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Joel Jean Profile
Joel Jean

@joeljean9

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Co-founder/CEO @SwiftSolarPV building the future of solar technology. Excited about all climate solutions.

Redwood City, CA
Joined March 2009
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@joeljean9
Joel Jean
8 months
1/ Today we’re announcing @SwiftSolarPV’s Series A! We raised $27M led by @eni Next and @Fontinalis_FP, with participation from a diverse group of new and existing investors @Stanford, @goodgrowthvc, @BlueScopeAus, @TobaCapital, @climatecap, and @jamesfickel, along with amazing founders like @sytses and @FEhrsam.
@SwiftSolarPV
Swift Solar
8 months
We’re excited to share that we raised a $27M Series A led by @eni Next and @Fontinalis_FP, with participation from @Stanford, @goodgrowthvc, @BlueScopeAus, @TobaCapital, @climatecap, @jamesfickel, @sytses, and @FEhrsam. We’re building next-gen perovskite tandem solar technology—the future of solar. It’s an exciting time to join the Swift Solar team! We’re hiring across multiple functions (R&D, Engineering, BD, Marketing) and creating new positions regularly. Explore our open roles here:
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@joeljean9
Joel Jean
10 days
Hadn’t noticed until today but @Nature publishing peer reviews as part of the SI is super helpful for deeper understanding and context. Are many journals doing this now?
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@joeljean9
Joel Jean
12 days
Funny how some people see data like this and go welp I guess solar is solved, let’s go work on [random energy tech] to make more impact My friends this is the biggest lever, let’s make it even bigger. Let’s make solar better and cheaper. This is called climate leverage
@Noahpinion
Noah Smith 🐇
14 days
This is not a transition that Trump or anyone is going to stop.
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@joeljean9
Joel Jean
12 days
@burgersb 💯 My bet is on solar overbuild + storage leading the way, no surprises there
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@joeljean9
Joel Jean
12 days
Some interesting advice from @pmthn for younger folks considering VC: “Relatedly, most (not all) VC jobs are destructive for young people early in their careers. People will laugh at your bad jokes and nod approvingly at your awful advice, which can destroy your self-awareness and annihilate your grit. If you insist, consider joining a firm with zero brand awareness and barely any capital.” This resonates. Feels like a cousin of “the best salespeople come from companies with bad products”
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@joeljean9
Joel Jean
26 days
RT @joannejang: i find mishearing 'agents' as 'asians' way more entertaining "a swarm of asians working 24/7 while you sleep" "the future…
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@joeljean9
Joel Jean
1 month
RT @crushed_silver: Apple Watches are just Tomagotchi’s except the stupid animal you’re trying to keep alive is yourself
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@joeljean9
Joel Jean
1 month
Interesting! Is 1.86eV your bandgap at 300K or some higher operating temp? Ideas… If the latter, room temp bandgap (and emission peak) is prob higher. Also I think most cameras don’t do so well reproducing color of monochromatic sources, so you might get a few tens of nm offset from that (estimated by 4o, I don’t have a good ref or sense of that) Or maybe you have some cool anti stokes stuff going on and need to science more haha
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@joeljean9
Joel Jean
2 months
I think people are done talking about immigration on here (haha) but I'll mention that 3 of my amazing world-class-scientist cofounders @SwiftSolarPV were on O-1/EB-2. Without reasonable (albeit annoying) immigration policy they would not be building the future of solar tech here in the US. It's super important to get this right.
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@joeljean9
Joel Jean
2 months
An inspiring and heartwarming crypto story 🥲
@blader
Siqi Chen
2 months
i am in tears. unbelievably grateful to the community that made this possible. thank you, thank you, thank you. in addition to this $1M, we have also raised $250K in gofundme. yi and i are also donating another $100K from our personal funds on top to support the hankinson lab. that comes out to a total of $1.35M in funding raised in the last 4 days that is going to make a real difference to the thousands of kids that are afflicted with this disease today. this is the single largest donation that has ever been made to Hankinson Lab. i cannot tell you how much i love that our beautiful mira's name is associated with something beautiful like this in the world. while i still expect $MIRA to go to zero, and i strongly believe that nobody should buy a single token if they don't expect the same, if $MIRA ends up being something long lasting that can help direct even more funding to rare disease research, nothing would make me happier. to that end, i have locked about 1/3 of what i still own in a one year lock. i have also paused the liquidation schedule, and per earlier commitment of advance notice, will instead begin liquidating at a much slower rate of 50,000 $MIRA per hour, starting in 24 hours, in order to maximize funding to rare disease research over the long run. i am still figuring out next steps, but my commitment again is to continue have all funds across any token, any time, from the wallet associated with $MIRA to go 100% to supporting rare disease research (minus tax obligations). i am also working to have 80% of all my remaining $MIRA tokens in a lock or multi-sig wallet controlled by people the community trusts. more coming while i work on the above, but for now - thank you all, from the bottom of our hearts.
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@joeljean9
Joel Jean
2 months
@kaia_mattioli Touché. I’d love to see “peer reviews” (and ratings) indexed by paper!
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@joeljean9
Joel Jean
2 months
Fun for avid readers
@sharifshameem
Sharif Shameem
2 months
I love how great Claude is at recommending me things to read. So great that I decided to make a lil vibes-based book search engine:
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@joeljean9
Joel Jean
2 months
RT @duncan__c: Google is going to colocate massive solar and battery plants with its data centers, trying to avoid the grid to the greatest…
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@joeljean9
Joel Jean
2 months
The end of an era. Looking forward to the next chapter of @sytses
@sytses
Sid Sijbrandij
2 months
On today’s earnings call, I announced my transition from @GitLab’s CEO to the Executive Chair of the Board. I want more time to focus on my cancer treatment and health. My treatments are going well, my cancer has not metastasized, and I'm working towards making a full recovery.
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@joeljean9
Joel Jean
2 months
yes yes
@tsungxu
Tsung Xu
2 months
the 1900s was the best time to build a dozen massive hardware companies in America now is the next best time
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@joeljean9
Joel Jean
2 months
RT @curious_founder: This is wild. In 2022, utilities expected electricity demand to grow by 23 GW over the next 5 years. In 2023, t…
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@joeljean9
Joel Jean
2 months
Is this a thing? I do this 🤔
@OptimismMommy
Lillian
2 months
Autistic people will give you bits of information they scavenged for you out of love. This is both incredibly endearing and very useful in an information era
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@joeljean9
Joel Jean
2 months
Well said
@RobertMSterling
Robert Sterling
2 months
When we take turns paying in full, we experience both giving and receiving gratitude. Expressing love for someone, and them, in turn, showing love for us. When we split all bills, on the other hand, every would-be act of friendship turns into a banal commercial transaction. What should feel like exchanges of love get degraded into accounting reconciliations. The divine gets subverted by the mundane, and human bonds that should be strengthened eventually get corroded. It’s not worth it. True friendship deserves better.
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@joeljean9
Joel Jean
3 months
Fortune cookie on my fridge hits harder than @MikeTyson at 58 and he is no slouch
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