Hi! I'm Mike Mettler (linkedin & twitter/x). I advise & make small angel investments (usually $25k) in awesome people building things that help our planet. I prefer to get involved as early as possible, including being the first check. I like working directly with teams on product, sales, recruiting, and operations. I'm not as useful at the later growth stages. If you think I might be able to help, get in touch! Warm intros are best but not required.

I've invested in AirMyne, Bedrock Materials, Beeper (acquired by Automattic), Boom Supersonic, Cambrian Genomics (shut down), Channing Copper, Compound Eye, Critical Energy, Elephant Energy, Elroy Air, Kopperfield, Lumen Energy, Seabound, Super, and Tailscale.

Some areas that I'm actively looking to fund/help (not restrictive - if you're working on something else, great):

Fossil-free fuels

- Hydrocarbon or hydrogen synthesis

- Solar-friendly electrolyzers

Storage

- Thermal, chemical, and mechanical

- Improving yield and lowering costs of existing batteries

Fission

- New designs that are safer, cheaper, or faster to deploy

Fusion

- Software for better plasma control / stabilization

- Picks and shovels (making tritium, breeder blankets, etc.)

Efficient computing

- Low power hardware for AI/ML

Water

- Desalination with solar

Paper

- Bioengineering instead of cutting down trees