# Joule Thief

> the finance and business models driving clean energy.

- **Platform:** substack
- **Category:** Climate
- **Subscribers:** 200
- **Monthly growth:** 0.0%
- **Last updated:** 2026-04-18
- **URL:** https://joulethief.substack.com
- **Profile:** https://newsletterinsights.io/newsletter/joulethief