perovskite
(2)
Swift Solar
Swift Solar is a San Carlos, California startup building perovskite tandem solar cells that aim to beat silicon on both efficiency and cost. Spun out of Stanford, MIT, Oxford and NREL in 2017, the company is now scaling toward gigawatt manufacturing in the United States after a $27M Series A and the 2026 acquisition of Meyer Burger's HJT manufacturing assets and patents.
Joel Jean
Joel Jean is Co-Founder and CEO of Swift Solar, the San Carlos, California-based company turning a decade of perovskite research into commercial solar panels that generate up to 30% more power than conventional silicon. A Taiwanese-American from Beavercreek, Ohio who went through Stanford (BS EE, with distinction) and MIT (SM and PhD EE, NSF Graduate Research Fellow), Jean co-authored the landmark MIT Future of Solar Energy study in 2015, then realized the only logical next step was to build the company the study described. Swift Solar, founded in 2017 with five other perovskite PhDs drawn from MIT, Stanford, Oxford, Cambridge, and NREL, has raised over $60M, deployed its panels in a live US Department of Defense exercise, earned TIME Top GreenTech recognition three consecutive years, and in March 2026 acquired Meyer Burger's HJT manufacturing assets to plant a full US solar supply chain.