Lowercarbon Capital
Lowercarbon Capital does not whisper about climate. It speaks in tonnage, cost curves, and physics that either works or embarrasses you in public. Chris Sacca and Crystal Wang English Sacca built their reputations catching lightning early with Lowercase Capital, then walked straight into the hardest arena on the board. Around 2020, they pointed that same instinct at climate and started writing checks into companies that treat decarbonization like a business model, not a moral accessory. By 2021, outside capital followed in size, the signal clear: this was not a side quest, it was a capital formation engine aimed at the real economy, scaling toward $2B+ in managed capital.
Inside the firm, the cast is built for impact where spreadsheets meet steel. Dr. Scott C. Hsu leans into fusion with a scientist’s patience and a trader’s timing. Christian Bjelland runs capital formation like a market maker, pairing ambition with the right pools of money. Monique Guimond shapes portfolio strategy with an operator’s eye for friction, while Melissa Waystack, Alexandra Frumar, and Kyle Taylor keep finance, legal, and product aligned when things get complicated, which they do fast in climate. Principals Duncan Carlson, Eric Helfgott, and Sidney Brown push deals forward, supported by a bench that understands this is not software that ships overnight, this is infrastructure that has to survive contact with reality.
The thesis is blunt and disciplined. Back companies that cut emissions, remove carbon, or help the world adapt, but only if they can win on price and performance. Energy, materials, transportation, agriculture, carbon removal, manufacturing. No hobby projects. No dependency on goodwill. The bet is that the next industrial cycle belongs to teams who can outcompete fossil incumbents on unit economics. That means deep technical diligence, respect for regulation, and a bias toward founders who can build in messy environments where timelines stretch and stakes rise.
The portfolio reflects that posture. Not a narrow lane, but a map of pressure points across the global economy where carbon and cost collide. Early stage is the hunting ground, but conviction carries through stages when the math holds. Lowercarbon shows up where science becomes product and product becomes infrastructure, and where other investors hesitate because the problems look heavy. That is the edge. They are not avoiding risk, they are pricing it with intent.
If you are serious about working on climate, not tweeting about it, their portfolio is hiring across engineering, science, operations, policy, and commercial roles. The job board is a front door into companies building the next layer of the economy. Step in, pick a problem worth your time, and get to work.